/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:50:58,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:50:58,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:50:58,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:50:58,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:50:58,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:50:58,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:50:58,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:50:58,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:50:58,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:50:58,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:50:58,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:50:58,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:50:58,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:50:58,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:50:58,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:50:58,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:50:58,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:50:58,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:50:58,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:50:58,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:50:58,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:50:58,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:50:58,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:50:58,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 13:50:58,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 13:50:58,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 13:50:58,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 13:50:58,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 13:50:58,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 13:50:58,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 13:50:58,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 13:50:58,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 13:50:58,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 13:50:58,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 13:50:58,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 13:50:58,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 13:50:58,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 13:50:58,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:50:58,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:50:58,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:50:58,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:50:58,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:50:58,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:50:58,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:50:58,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:50:58,289 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:50:58,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:50:58,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:50:58,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:50:58,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:50:58,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:50:58,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:50:58,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:50:58,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:50:58,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:50:58,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:50:58,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:50:58,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:50:58,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:50:58,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:50:58,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:50:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:50:58,293 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:50:58,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:50:58,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:50:58,293 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:50:58,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:50:58,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:50:58,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:50:58,560 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:50:58,561 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:50:58,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl [2021-03-26 13:50:58,562 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl' [2021-03-26 13:50:58,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:50:58,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:50:58,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:50:58,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:50:58,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:50:58,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:50:58,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:50:58,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:50:58,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:50:58,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... [2021-03-26 13:50:58,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:50:58,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:50:58,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:50:58,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:50:58,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:50:58,674 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 13:50:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 13:50:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 13:50:58,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 13:50:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 13:50:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 13:50:58,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:50:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:50:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:50:58,676 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:50:58,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:50:58,803 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:50:58,805 INFO L202 PluginConnector]: Adding new model mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:50:58 BoogieIcfgContainer [2021-03-26 13:50:58,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:50:58,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:50:58,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:50:58,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:50:58,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:50:58" (1/2) ... [2021-03-26 13:50:58,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279781ed and model type mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:50:58, skipping insertion in model container [2021-03-26 13:50:58,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:50:58" (2/2) ... [2021-03-26 13:50:58,811 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.bpl [2021-03-26 13:50:58,814 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:50:58,821 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:50:58,832 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:50:58,851 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-26 13:50:58,877 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 13:50:58,890 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:50:58,890 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:50:58,890 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:50:58,890 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:50:58,891 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:50:58,891 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:50:58,891 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:50:58,891 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:50:58,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 54 flow [2021-03-26 13:50:58,908 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-26 13:50:58,909 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:50:58,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2021-03-26 13:50:58,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 54 flow [2021-03-26 13:50:58,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-03-26 13:50:58,914 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:50:58,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-26 13:50:58,925 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-26 13:50:58,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-26 13:50:58,930 INFO L129 PetriNetUnfolder]: 2/15 cut-off events. [2021-03-26 13:50:58,930 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:50:58,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 2/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2021-03-26 13:50:58,931 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-26 13:50:59,028 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-26 13:50:59,028 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 13:50:59,029 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 116 [2021-03-26 13:50:59,036 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-26 13:50:59,036 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:50:59,036 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:50:59,037 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:50:59,037 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:50:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:50:59,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1133339149, now seen corresponding path program 1 times [2021-03-26 13:50:59,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:50:59,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419396318] [2021-03-26 13:50:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:50:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:50:59,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:50:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:50:59,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419396318] [2021-03-26 13:50:59,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:50:59,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 13:50:59,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624515215] [2021-03-26 13:50:59,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:50:59,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:50:59,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:50:59,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:50:59,133 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 24 [2021-03-26 13:50:59,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:50:59,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 24 [2021-03-26 13:50:59,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:50:59,147 INFO L129 PetriNetUnfolder]: 5/19 cut-off events. [2021-03-26 13:50:59,147 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-26 13:50:59,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 19 events. 5/19 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 20. Up to 8 conditions per place. [2021-03-26 13:50:59,148 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 3 selfloop transitions, 3 changer transitions 0/12 dead transitions. [2021-03-26 13:50:59,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 48 flow [2021-03-26 13:50:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:50:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:50:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2021-03-26 13:50:59,155 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2021-03-26 13:50:59,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 55 transitions. [2021-03-26 13:50:59,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 55 transitions. [2021-03-26 13:50:59,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:50:59,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 55 transitions. [2021-03-26 13:50:59,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,162 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 32 flow. Second operand 3 states and 55 transitions. [2021-03-26 13:50:59,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 48 flow [2021-03-26 13:50:59,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 12 transitions, 40 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 13:50:59,165 INFO L241 Difference]: Finished difference. Result has 14 places, 12 transitions, 43 flow [2021-03-26 13:50:59,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=14, PETRI_TRANSITIONS=12} [2021-03-26 13:50:59,166 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2021-03-26 13:50:59,166 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:50:59,166 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 12 transitions, 43 flow [2021-03-26 13:50:59,167 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 12 transitions, 43 flow [2021-03-26 13:50:59,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 12 transitions, 43 flow [2021-03-26 13:50:59,170 INFO L129 PetriNetUnfolder]: 5/19 cut-off events. [2021-03-26 13:50:59,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:50:59,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 19 events. 5/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 18. Up to 8 conditions per place. [2021-03-26 13:50:59,171 INFO L142 LiptonReduction]: Number of co-enabled transitions 22 [2021-03-26 13:50:59,171 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:50:59,171 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:50:59,172 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 13:50:59,172 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 12 transitions, 43 flow [2021-03-26 13:50:59,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,173 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:50:59,173 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:50:59,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:50:59,173 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:50:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:50:59,173 INFO L82 PathProgramCache]: Analyzing trace with hash -687885939, now seen corresponding path program 1 times [2021-03-26 13:50:59,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:50:59,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025673788] [2021-03-26 13:50:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:50:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:50:59,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,223 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.8 percent of original size [2021-03-26 13:50:59,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:50:59,258 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:50:59,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:50:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:50:59,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025673788] [2021-03-26 13:50:59,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893323893] [2021-03-26 13:50:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:50:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:50:59,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:50:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:50:59,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,402 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-03-26 13:50:59,403 INFO L142 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-03-26 13:50:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,423 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:50:59,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:50:59,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:50:59,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:50:59,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:50:59,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:50:59,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:50:59,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195509207] [2021-03-26 13:50:59,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:50:59,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:50:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:50:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:50:59,449 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 24 [2021-03-26 13:50:59,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 12 transitions, 43 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:50:59,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 24 [2021-03-26 13:50:59,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:50:59,542 INFO L129 PetriNetUnfolder]: 9/28 cut-off events. [2021-03-26 13:50:59,542 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 13:50:59,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 28 events. 9/28 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2021-03-26 13:50:59,544 INFO L132 encePairwiseOnDemand]: 19/24 looper letters, 4 selfloop transitions, 5 changer transitions 4/18 dead transitions. [2021-03-26 13:50:59,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 18 transitions, 90 flow [2021-03-26 13:50:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 13:50:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 13:50:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-03-26 13:50:59,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-03-26 13:50:59,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-03-26 13:50:59,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-03-26 13:50:59,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:50:59,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-03-26 13:50:59,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,551 INFO L185 Difference]: Start difference. First operand has 14 places, 12 transitions, 43 flow. Second operand 5 states and 78 transitions. [2021-03-26 13:50:59,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 18 transitions, 90 flow [2021-03-26 13:50:59,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 18 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:50:59,554 INFO L241 Difference]: Finished difference. Result has 20 places, 14 transitions, 74 flow [2021-03-26 13:50:59,555 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2021-03-26 13:50:59,555 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2021-03-26 13:50:59,555 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:50:59,555 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 14 transitions, 74 flow [2021-03-26 13:50:59,556 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 14 transitions, 74 flow [2021-03-26 13:50:59,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 19 places, 14 transitions, 74 flow [2021-03-26 13:50:59,564 INFO L129 PetriNetUnfolder]: 7/22 cut-off events. [2021-03-26 13:50:59,564 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 13:50:59,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 22 events. 7/22 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 51. Up to 11 conditions per place. [2021-03-26 13:50:59,566 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:50:59,567 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:50:59,567 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:50:59,567 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 13:50:59,568 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 74 flow [2021-03-26 13:50:59,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:50:59,569 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:50:59,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-03-26 13:50:59,780 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:50:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:50:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash -803209783, now seen corresponding path program 1 times [2021-03-26 13:50:59,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:50:59,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735591548] [2021-03-26 13:50:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:50:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:50:59,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,841 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.8 percent of original size [2021-03-26 13:50:59,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:50:59,863 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:50:59,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:50:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:50:59,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735591548] [2021-03-26 13:50:59,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354487883] [2021-03-26 13:50:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:50:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:50:59,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:50:59,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:50:59,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:50:59,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:50:59,960 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-03-26 13:50:59,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:50:59,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:50:59,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:50:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:50:59,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:50:59,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:50:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:50:59,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:50:59,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:50:59,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480643768] [2021-03-26 13:50:59,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:50:59,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:50:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:50:59,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:50:59,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 24 [2021-03-26 13:50:59,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:50:59,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:50:59,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 24 [2021-03-26 13:50:59,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:00,060 INFO L129 PetriNetUnfolder]: 15/36 cut-off events. [2021-03-26 13:51:00,061 INFO L130 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2021-03-26 13:51:00,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 36 events. 15/36 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 78 event pairs, 1 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 110. Up to 19 conditions per place. [2021-03-26 13:51:00,062 INFO L132 encePairwiseOnDemand]: 19/24 looper letters, 6 selfloop transitions, 5 changer transitions 4/20 dead transitions. [2021-03-26 13:51:00,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 133 flow [2021-03-26 13:51:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 13:51:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 13:51:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-03-26 13:51:00,064 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-03-26 13:51:00,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-03-26 13:51:00,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-03-26 13:51:00,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:00,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-03-26 13:51:00,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,066 INFO L185 Difference]: Start difference. First operand has 19 places, 14 transitions, 74 flow. Second operand 5 states and 78 transitions. [2021-03-26 13:51:00,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 133 flow [2021-03-26 13:51:00,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 116 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:00,067 INFO L241 Difference]: Finished difference. Result has 23 places, 16 transitions, 97 flow [2021-03-26 13:51:00,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2021-03-26 13:51:00,068 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 8 predicate places. [2021-03-26 13:51:00,068 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:00,068 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 16 transitions, 97 flow [2021-03-26 13:51:00,068 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 16 transitions, 97 flow [2021-03-26 13:51:00,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 16 transitions, 97 flow [2021-03-26 13:51:00,074 INFO L129 PetriNetUnfolder]: 12/28 cut-off events. [2021-03-26 13:51:00,074 INFO L130 PetriNetUnfolder]: For 28/31 co-relation queries the response was YES. [2021-03-26 13:51:00,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 28 events. 12/28 cut-off events. For 28/31 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 87. Up to 16 conditions per place. [2021-03-26 13:51:00,074 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-26 13:51:00,120 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:00,120 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:00,120 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-26 13:51:00,121 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 100 flow [2021-03-26 13:51:00,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,121 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:00,121 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:00,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:00,340 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1788899921, now seen corresponding path program 1 times [2021-03-26 13:51:00,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:00,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984597985] [2021-03-26 13:51:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:00,372 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 13:51:00,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:51:00,386 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-03-26 13:51:00,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:00,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:00,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:00,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:00,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984597985] [2021-03-26 13:51:00,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965594549] [2021-03-26 13:51:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:00,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-26 13:51:00,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:00,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:00,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:00,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,473 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size 32 [2021-03-26 13:51:00,474 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:00,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:00,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:00,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:00,488 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-03-26 13:51:00,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:00,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:00,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:51:00,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:00,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:00,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:00,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:00,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:00,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:00,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:00,522 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:00,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:00,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:00,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:00,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:00,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,536 INFO L147 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size 64 [2021-03-26 13:51:00,537 INFO L142 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size [2021-03-26 13:51:00,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-26 13:51:00,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:00,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:00,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:00,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:00,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:00,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:00,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515979853] [2021-03-26 13:51:00,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:00,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:00,563 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2021-03-26 13:51:00,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 100 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:00,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2021-03-26 13:51:00,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:00,672 INFO L129 PetriNetUnfolder]: 18/50 cut-off events. [2021-03-26 13:51:00,673 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2021-03-26 13:51:00,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 50 events. 18/50 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 129 event pairs, 1 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 176. Up to 27 conditions per place. [2021-03-26 13:51:00,673 INFO L132 encePairwiseOnDemand]: 18/25 looper letters, 10 selfloop transitions, 10 changer transitions 1/25 dead transitions. [2021-03-26 13:51:00,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 198 flow [2021-03-26 13:51:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:51:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:51:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2021-03-26 13:51:00,674 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.52 [2021-03-26 13:51:00,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 91 transitions. [2021-03-26 13:51:00,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 91 transitions. [2021-03-26 13:51:00,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:00,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 91 transitions. [2021-03-26 13:51:00,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,675 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 100 flow. Second operand 7 states and 91 transitions. [2021-03-26 13:51:00,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 198 flow [2021-03-26 13:51:00,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 176 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:00,677 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 148 flow [2021-03-26 13:51:00,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2021-03-26 13:51:00,677 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 13 predicate places. [2021-03-26 13:51:00,677 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:00,677 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 20 transitions, 148 flow [2021-03-26 13:51:00,678 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 20 transitions, 148 flow [2021-03-26 13:51:00,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 20 transitions, 148 flow [2021-03-26 13:51:00,681 INFO L129 PetriNetUnfolder]: 16/44 cut-off events. [2021-03-26 13:51:00,681 INFO L130 PetriNetUnfolder]: For 87/89 co-relation queries the response was YES. [2021-03-26 13:51:00,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 44 events. 16/44 cut-off events. For 87/89 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 152. Up to 23 conditions per place. [2021-03-26 13:51:00,682 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:00,717 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:00,717 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:00,718 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-26 13:51:00,718 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 149 flow [2021-03-26 13:51:00,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:00,718 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:00,718 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:00,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:00,936 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash -660064028, now seen corresponding path program 1 times [2021-03-26 13:51:00,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:00,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728622122] [2021-03-26 13:51:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:00,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:00,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:00,968 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:00,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:00,995 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:00,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:01,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728622122] [2021-03-26 13:51:01,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660844388] [2021-03-26 13:51:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:01,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:01,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:01,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,075 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:01,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:01,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:01,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:01,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:01,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:01,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:01,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714112408] [2021-03-26 13:51:01,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:01,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:01,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:01,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:01,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 26 [2021-03-26 13:51:01,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:01,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 26 [2021-03-26 13:51:01,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:01,174 INFO L129 PetriNetUnfolder]: 19/53 cut-off events. [2021-03-26 13:51:01,174 INFO L130 PetriNetUnfolder]: For 128/132 co-relation queries the response was YES. [2021-03-26 13:51:01,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 53 events. 19/53 cut-off events. For 128/132 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 149 event pairs, 1 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 217. Up to 30 conditions per place. [2021-03-26 13:51:01,175 INFO L132 encePairwiseOnDemand]: 20/26 looper letters, 10 selfloop transitions, 7 changer transitions 2/24 dead transitions. [2021-03-26 13:51:01,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 225 flow [2021-03-26 13:51:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2021-03-26 13:51:01,176 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-26 13:51:01,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 93 transitions. [2021-03-26 13:51:01,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 93 transitions. [2021-03-26 13:51:01,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:01,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 93 transitions. [2021-03-26 13:51:01,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,177 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,177 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 149 flow. Second operand 6 states and 93 transitions. [2021-03-26 13:51:01,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 225 flow [2021-03-26 13:51:01,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 199 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:01,178 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 168 flow [2021-03-26 13:51:01,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2021-03-26 13:51:01,179 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 16 predicate places. [2021-03-26 13:51:01,179 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:01,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 22 transitions, 168 flow [2021-03-26 13:51:01,179 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 22 transitions, 168 flow [2021-03-26 13:51:01,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 22 transitions, 168 flow [2021-03-26 13:51:01,182 INFO L129 PetriNetUnfolder]: 18/48 cut-off events. [2021-03-26 13:51:01,182 INFO L130 PetriNetUnfolder]: For 93/95 co-relation queries the response was YES. [2021-03-26 13:51:01,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 48 events. 18/48 cut-off events. For 93/95 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 131 event pairs, 1 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 178. Up to 26 conditions per place. [2021-03-26 13:51:01,183 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:01,218 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:01,218 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:01,218 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-26 13:51:01,219 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 170 flow [2021-03-26 13:51:01,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:01,219 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:01,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:01,436 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:01,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:01,436 INFO L82 PathProgramCache]: Analyzing trace with hash 152218389, now seen corresponding path program 2 times [2021-03-26 13:51:01,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:01,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212113678] [2021-03-26 13:51:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:01,465 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 13:51:01,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:51:01,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:51:01,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:01,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:01,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:01,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212113678] [2021-03-26 13:51:01,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223830276] [2021-03-26 13:51:01,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:01,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-26 13:51:01,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-26 13:51:01,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-26 13:51:01,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:01,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:01,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,532 INFO L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-03-26 13:51:01,533 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-03-26 13:51:01,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:01,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:01,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:01,545 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 13:51:01,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:01,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:01,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:01,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:01,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:01,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:01,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,565 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size 32 [2021-03-26 13:51:01,565 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:01,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:01,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:01,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:01,580 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:01,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:01,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:01,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:01,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:01,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,586 INFO L147 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size 64 [2021-03-26 13:51:01,587 INFO L142 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size [2021-03-26 13:51:01,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-26 13:51:01,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:01,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:01,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:01,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876269443] [2021-03-26 13:51:01,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:01,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:01,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:01,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:01,615 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2021-03-26 13:51:01,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 170 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:01,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2021-03-26 13:51:01,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:01,694 INFO L129 PetriNetUnfolder]: 20/50 cut-off events. [2021-03-26 13:51:01,694 INFO L130 PetriNetUnfolder]: For 145/152 co-relation queries the response was YES. [2021-03-26 13:51:01,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 50 events. 20/50 cut-off events. For 145/152 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 130 event pairs, 1 based on Foata normal form. 8/58 useless extension candidates. Maximal degree in co-relation 231. Up to 36 conditions per place. [2021-03-26 13:51:01,694 INFO L132 encePairwiseOnDemand]: 18/27 looper letters, 10 selfloop transitions, 10 changer transitions 2/26 dead transitions. [2021-03-26 13:51:01,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 247 flow [2021-03-26 13:51:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:51:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:51:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2021-03-26 13:51:01,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2021-03-26 13:51:01,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 88 transitions. [2021-03-26 13:51:01,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 88 transitions. [2021-03-26 13:51:01,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:01,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 88 transitions. [2021-03-26 13:51:01,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,697 INFO L185 Difference]: Start difference. First operand has 30 places, 22 transitions, 170 flow. Second operand 7 states and 88 transitions. [2021-03-26 13:51:01,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 247 flow [2021-03-26 13:51:01,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 219 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:01,698 INFO L241 Difference]: Finished difference. Result has 35 places, 24 transitions, 192 flow [2021-03-26 13:51:01,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-03-26 13:51:01,699 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 20 predicate places. [2021-03-26 13:51:01,699 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:01,699 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 24 transitions, 192 flow [2021-03-26 13:51:01,699 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 24 transitions, 192 flow [2021-03-26 13:51:01,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 24 transitions, 192 flow [2021-03-26 13:51:01,701 INFO L129 PetriNetUnfolder]: 18/44 cut-off events. [2021-03-26 13:51:01,702 INFO L130 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2021-03-26 13:51:01,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 44 events. 18/44 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 86 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 174. Up to 23 conditions per place. [2021-03-26 13:51:01,702 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:01,723 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:01,723 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:01,723 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-26 13:51:01,724 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 197 flow [2021-03-26 13:51:01,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:01,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:01,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:01,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-03-26 13:51:01,931 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:01,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:01,931 INFO L82 PathProgramCache]: Analyzing trace with hash -601911996, now seen corresponding path program 1 times [2021-03-26 13:51:01,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:01,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277667973] [2021-03-26 13:51:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:01,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:01,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:01,952 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:01,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:01,976 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:01,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:01,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277667973] [2021-03-26 13:51:01,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459603342] [2021-03-26 13:51:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:02,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:02,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:02,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:02,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:02,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:02,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:02,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:02,036 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:02,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:02,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:02,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:02,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:02,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:02,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:02,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50847982] [2021-03-26 13:51:02,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:02,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:02,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:02,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2021-03-26 13:51:02,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:02,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2021-03-26 13:51:02,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:02,136 INFO L129 PetriNetUnfolder]: 21/53 cut-off events. [2021-03-26 13:51:02,137 INFO L130 PetriNetUnfolder]: For 185/190 co-relation queries the response was YES. [2021-03-26 13:51:02,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 53 events. 21/53 cut-off events. For 185/190 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 131 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 252. Up to 30 conditions per place. [2021-03-26 13:51:02,137 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 11 selfloop transitions, 10 changer transitions 2/28 dead transitions. [2021-03-26 13:51:02,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 291 flow [2021-03-26 13:51:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2021-03-26 13:51:02,138 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2021-03-26 13:51:02,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 95 transitions. [2021-03-26 13:51:02,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 95 transitions. [2021-03-26 13:51:02,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:02,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 95 transitions. [2021-03-26 13:51:02,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,139 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 197 flow. Second operand 6 states and 95 transitions. [2021-03-26 13:51:02,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 291 flow [2021-03-26 13:51:02,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 247 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-26 13:51:02,141 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 208 flow [2021-03-26 13:51:02,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-26 13:51:02,141 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 20 predicate places. [2021-03-26 13:51:02,141 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:02,141 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 208 flow [2021-03-26 13:51:02,141 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 208 flow [2021-03-26 13:51:02,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 208 flow [2021-03-26 13:51:02,144 INFO L129 PetriNetUnfolder]: 20/49 cut-off events. [2021-03-26 13:51:02,144 INFO L130 PetriNetUnfolder]: For 165/170 co-relation queries the response was YES. [2021-03-26 13:51:02,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 49 events. 20/49 cut-off events. For 165/170 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 116 event pairs, 0 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 202. Up to 28 conditions per place. [2021-03-26 13:51:02,145 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:02,182 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:02,183 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:02,183 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-26 13:51:02,183 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 210 flow [2021-03-26 13:51:02,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:02,183 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:02,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:02,391 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash 288096477, now seen corresponding path program 1 times [2021-03-26 13:51:02,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:02,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883912087] [2021-03-26 13:51:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:02,412 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:02,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:02,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:02,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:02,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:02,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:02,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883912087] [2021-03-26 13:51:02,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472186768] [2021-03-26 13:51:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:02,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:02,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:02,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,464 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:02,465 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-03-26 13:51:02,472 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-03-26 13:51:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:02,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:02,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:02,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:02,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:02,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:02,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:02,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:02,507 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:02,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:51:02,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:02,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:02,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:02,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844404441] [2021-03-26 13:51:02,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:02,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:02,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:02,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:02,537 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2021-03-26 13:51:02,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 210 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:02,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2021-03-26 13:51:02,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:02,648 INFO L129 PetriNetUnfolder]: 22/60 cut-off events. [2021-03-26 13:51:02,648 INFO L130 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2021-03-26 13:51:02,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 60 events. 22/60 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 176 event pairs, 1 based on Foata normal form. 3/63 useless extension candidates. Maximal degree in co-relation 297. Up to 41 conditions per place. [2021-03-26 13:51:02,649 INFO L132 encePairwiseOnDemand]: 19/29 looper letters, 14 selfloop transitions, 11 changer transitions 3/32 dead transitions. [2021-03-26 13:51:02,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 332 flow [2021-03-26 13:51:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2021-03-26 13:51:02,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2021-03-26 13:51:02,649 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 123 transitions. [2021-03-26 13:51:02,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 123 transitions. [2021-03-26 13:51:02,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:02,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 123 transitions. [2021-03-26 13:51:02,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,650 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,651 INFO L185 Difference]: Start difference. First operand has 34 places, 26 transitions, 210 flow. Second operand 10 states and 123 transitions. [2021-03-26 13:51:02,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 332 flow [2021-03-26 13:51:02,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 294 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:02,652 INFO L241 Difference]: Finished difference. Result has 45 places, 29 transitions, 256 flow [2021-03-26 13:51:02,652 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=256, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2021-03-26 13:51:02,652 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 30 predicate places. [2021-03-26 13:51:02,652 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:02,652 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 29 transitions, 256 flow [2021-03-26 13:51:02,653 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 29 transitions, 256 flow [2021-03-26 13:51:02,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 29 transitions, 256 flow [2021-03-26 13:51:02,655 INFO L129 PetriNetUnfolder]: 20/51 cut-off events. [2021-03-26 13:51:02,655 INFO L130 PetriNetUnfolder]: For 224/229 co-relation queries the response was YES. [2021-03-26 13:51:02,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 51 events. 20/51 cut-off events. For 224/229 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 130 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 231. Up to 29 conditions per place. [2021-03-26 13:51:02,656 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-26 13:51:02,765 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:02,765 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:02,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 113 [2021-03-26 13:51:02,765 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 216 flow [2021-03-26 13:51:02,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:02,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:02,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:02,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:02,972 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:02,972 INFO L82 PathProgramCache]: Analyzing trace with hash -544653694, now seen corresponding path program 1 times [2021-03-26 13:51:02,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:02,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844278436] [2021-03-26 13:51:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:02,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:02,991 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:02,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:03,012 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:03,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:03,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844278436] [2021-03-26 13:51:03,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487538424] [2021-03-26 13:51:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:03,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:03,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,067 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:03,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:03,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:03,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:03,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:03,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:03,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:03,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:03,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:03,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817156964] [2021-03-26 13:51:03,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:03,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:03,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:03,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:03,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2021-03-26 13:51:03,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:03,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2021-03-26 13:51:03,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:03,168 INFO L129 PetriNetUnfolder]: 23/57 cut-off events. [2021-03-26 13:51:03,168 INFO L130 PetriNetUnfolder]: For 345/351 co-relation queries the response was YES. [2021-03-26 13:51:03,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 57 events. 23/57 cut-off events. For 345/351 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 154 event pairs, 0 based on Foata normal form. 1/58 useless extension candidates. Maximal degree in co-relation 300. Up to 32 conditions per place. [2021-03-26 13:51:03,168 INFO L132 encePairwiseOnDemand]: 23/32 looper letters, 11 selfloop transitions, 12 changer transitions 2/30 dead transitions. [2021-03-26 13:51:03,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 326 flow [2021-03-26 13:51:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2021-03-26 13:51:03,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2021-03-26 13:51:03,169 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 97 transitions. [2021-03-26 13:51:03,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 97 transitions. [2021-03-26 13:51:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:03,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 97 transitions. [2021-03-26 13:51:03,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,171 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 216 flow. Second operand 6 states and 97 transitions. [2021-03-26 13:51:03,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 326 flow [2021-03-26 13:51:03,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 278 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:03,174 INFO L241 Difference]: Finished difference. Result has 37 places, 28 transitions, 235 flow [2021-03-26 13:51:03,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2021-03-26 13:51:03,174 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 22 predicate places. [2021-03-26 13:51:03,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:03,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 28 transitions, 235 flow [2021-03-26 13:51:03,175 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 28 transitions, 235 flow [2021-03-26 13:51:03,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 28 transitions, 235 flow [2021-03-26 13:51:03,177 INFO L129 PetriNetUnfolder]: 21/52 cut-off events. [2021-03-26 13:51:03,177 INFO L130 PetriNetUnfolder]: For 230/232 co-relation queries the response was YES. [2021-03-26 13:51:03,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 52 events. 21/52 cut-off events. For 230/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 128 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 230. Up to 31 conditions per place. [2021-03-26 13:51:03,178 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:03,213 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:03,213 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:03,213 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-26 13:51:03,214 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 237 flow [2021-03-26 13:51:03,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,214 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:03,214 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:03,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-03-26 13:51:03,414 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:03,415 INFO L82 PathProgramCache]: Analyzing trace with hash 293551113, now seen corresponding path program 1 times [2021-03-26 13:51:03,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:03,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402415096] [2021-03-26 13:51:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:03,426 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:03,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:03,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:03,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:03,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402415096] [2021-03-26 13:51:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862419962] [2021-03-26 13:51:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:03,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:03,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:03,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,478 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:03,479 INFO L147 QuantifierPusher]: treesize reduction 8, result has 78.4 percent of original size 29 [2021-03-26 13:51:03,479 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-03-26 13:51:03,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:03,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:03,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:03,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:03,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:03,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:03,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:03,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:03,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:03,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,495 INFO L147 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size 39 [2021-03-26 13:51:03,495 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-03-26 13:51:03,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:03,514 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.3 percent of original size [2021-03-26 13:51:03,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:51:03,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:03,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:03,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:03,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:03,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:03,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:03,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216816446] [2021-03-26 13:51:03,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:03,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:03,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:03,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:03,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2021-03-26 13:51:03,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:03,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2021-03-26 13:51:03,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:03,606 INFO L129 PetriNetUnfolder]: 24/62 cut-off events. [2021-03-26 13:51:03,607 INFO L130 PetriNetUnfolder]: For 268/268 co-relation queries the response was YES. [2021-03-26 13:51:03,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 62 events. 24/62 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 178 event pairs, 1 based on Foata normal form. 2/64 useless extension candidates. Maximal degree in co-relation 320. Up to 45 conditions per place. [2021-03-26 13:51:03,607 INFO L132 encePairwiseOnDemand]: 22/33 looper letters, 15 selfloop transitions, 11 changer transitions 2/32 dead transitions. [2021-03-26 13:51:03,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 341 flow [2021-03-26 13:51:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2021-03-26 13:51:03,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2021-03-26 13:51:03,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 101 transitions. [2021-03-26 13:51:03,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 101 transitions. [2021-03-26 13:51:03,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:03,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 101 transitions. [2021-03-26 13:51:03,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,609 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,609 INFO L185 Difference]: Start difference. First operand has 36 places, 28 transitions, 237 flow. Second operand 8 states and 101 transitions. [2021-03-26 13:51:03,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 341 flow [2021-03-26 13:51:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 295 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:03,610 INFO L241 Difference]: Finished difference. Result has 43 places, 30 transitions, 259 flow [2021-03-26 13:51:03,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2021-03-26 13:51:03,610 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 28 predicate places. [2021-03-26 13:51:03,610 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:03,611 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 30 transitions, 259 flow [2021-03-26 13:51:03,611 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 30 transitions, 259 flow [2021-03-26 13:51:03,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 30 transitions, 259 flow [2021-03-26 13:51:03,613 INFO L129 PetriNetUnfolder]: 22/54 cut-off events. [2021-03-26 13:51:03,613 INFO L130 PetriNetUnfolder]: For 249/255 co-relation queries the response was YES. [2021-03-26 13:51:03,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 54 events. 22/54 cut-off events. For 249/255 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 144 event pairs, 0 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 244. Up to 31 conditions per place. [2021-03-26 13:51:03,614 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:03,693 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:03,693 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:03,693 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 83 [2021-03-26 13:51:03,694 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 233 flow [2021-03-26 13:51:03,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:03,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:03,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:03,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:03,908 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:03,908 INFO L82 PathProgramCache]: Analyzing trace with hash -431030820, now seen corresponding path program 1 times [2021-03-26 13:51:03,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:03,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863153955] [2021-03-26 13:51:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:03,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,928 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:03,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:03,949 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:03,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863153955] [2021-03-26 13:51:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078990123] [2021-03-26 13:51:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:03,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:03,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:03,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:03,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:03,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,002 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:04,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:04,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:04,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:04,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:04,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:04,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244264778] [2021-03-26 13:51:04,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:04,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:04,015 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2021-03-26 13:51:04,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:04,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2021-03-26 13:51:04,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:04,093 INFO L129 PetriNetUnfolder]: 25/61 cut-off events. [2021-03-26 13:51:04,093 INFO L130 PetriNetUnfolder]: For 386/393 co-relation queries the response was YES. [2021-03-26 13:51:04,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 61 events. 25/61 cut-off events. For 386/393 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 170 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 326. Up to 35 conditions per place. [2021-03-26 13:51:04,094 INFO L132 encePairwiseOnDemand]: 25/35 looper letters, 11 selfloop transitions, 14 changer transitions 2/32 dead transitions. [2021-03-26 13:51:04,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 355 flow [2021-03-26 13:51:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2021-03-26 13:51:04,094 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2021-03-26 13:51:04,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 98 transitions. [2021-03-26 13:51:04,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 98 transitions. [2021-03-26 13:51:04,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:04,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 98 transitions. [2021-03-26 13:51:04,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,095 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,095 INFO L185 Difference]: Start difference. First operand has 39 places, 28 transitions, 233 flow. Second operand 6 states and 98 transitions. [2021-03-26 13:51:04,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 355 flow [2021-03-26 13:51:04,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 309 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:04,097 INFO L241 Difference]: Finished difference. Result has 39 places, 30 transitions, 262 flow [2021-03-26 13:51:04,097 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2021-03-26 13:51:04,097 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 24 predicate places. [2021-03-26 13:51:04,097 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:04,097 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 30 transitions, 262 flow [2021-03-26 13:51:04,097 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 30 transitions, 262 flow [2021-03-26 13:51:04,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 262 flow [2021-03-26 13:51:04,100 INFO L129 PetriNetUnfolder]: 23/56 cut-off events. [2021-03-26 13:51:04,100 INFO L130 PetriNetUnfolder]: For 303/305 co-relation queries the response was YES. [2021-03-26 13:51:04,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 56 events. 23/56 cut-off events. For 303/305 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 143 event pairs, 1 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 259. Up to 34 conditions per place. [2021-03-26 13:51:04,100 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:04,135 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:04,135 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:04,135 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 13:51:04,135 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 264 flow [2021-03-26 13:51:04,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:04,135 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:04,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:04,336 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:04,336 INFO L82 PathProgramCache]: Analyzing trace with hash 296408166, now seen corresponding path program 1 times [2021-03-26 13:51:04,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:04,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554232975] [2021-03-26 13:51:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:04,346 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:04,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:04,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:04,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:04,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554232975] [2021-03-26 13:51:04,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876774433] [2021-03-26 13:51:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:04,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:04,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:04,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,402 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:04,403 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-03-26 13:51:04,403 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-26 13:51:04,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:04,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:04,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:04,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:04,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:04,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:04,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:04,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:04,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:04,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:04,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,432 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:04,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:04,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:04,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:04,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:04,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:04,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:04,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:04,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120608738] [2021-03-26 13:51:04,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:04,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:04,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:04,453 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2021-03-26 13:51:04,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:04,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2021-03-26 13:51:04,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:04,523 INFO L129 PetriNetUnfolder]: 26/66 cut-off events. [2021-03-26 13:51:04,523 INFO L130 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2021-03-26 13:51:04,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 66 events. 26/66 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 194 event pairs, 1 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 356. Up to 49 conditions per place. [2021-03-26 13:51:04,523 INFO L132 encePairwiseOnDemand]: 24/36 looper letters, 16 selfloop transitions, 12 changer transitions 2/34 dead transitions. [2021-03-26 13:51:04,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 376 flow [2021-03-26 13:51:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2021-03-26 13:51:04,525 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2021-03-26 13:51:04,525 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 102 transitions. [2021-03-26 13:51:04,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 102 transitions. [2021-03-26 13:51:04,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:04,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 102 transitions. [2021-03-26 13:51:04,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,527 INFO L185 Difference]: Start difference. First operand has 38 places, 30 transitions, 264 flow. Second operand 8 states and 102 transitions. [2021-03-26 13:51:04,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 376 flow [2021-03-26 13:51:04,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 322 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:04,532 INFO L241 Difference]: Finished difference. Result has 45 places, 32 transitions, 284 flow [2021-03-26 13:51:04,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=284, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2021-03-26 13:51:04,532 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 30 predicate places. [2021-03-26 13:51:04,532 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:04,532 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 32 transitions, 284 flow [2021-03-26 13:51:04,532 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 32 transitions, 284 flow [2021-03-26 13:51:04,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 32 transitions, 284 flow [2021-03-26 13:51:04,537 INFO L129 PetriNetUnfolder]: 24/58 cut-off events. [2021-03-26 13:51:04,537 INFO L130 PetriNetUnfolder]: For 313/315 co-relation queries the response was YES. [2021-03-26 13:51:04,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 58 events. 24/58 cut-off events. For 313/315 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 155 event pairs, 0 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 272. Up to 34 conditions per place. [2021-03-26 13:51:04,537 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:04,612 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:04,612 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:04,612 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 80 [2021-03-26 13:51:04,612 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 256 flow [2021-03-26 13:51:04,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,613 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:04,613 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:04,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-03-26 13:51:04,820 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:04,820 INFO L82 PathProgramCache]: Analyzing trace with hash -345143367, now seen corresponding path program 1 times [2021-03-26 13:51:04,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:04,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161073295] [2021-03-26 13:51:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:04,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,855 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:04,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:04,875 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:04,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:04,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161073295] [2021-03-26 13:51:04,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039398432] [2021-03-26 13:51:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:04,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:04,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:04,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:04,924 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:04,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:04,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:04,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:04,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:04,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:04,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:04,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:04,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:04,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:04,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460943011] [2021-03-26 13:51:04,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:04,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:04,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:04,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:04,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2021-03-26 13:51:04,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:04,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:04,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2021-03-26 13:51:04,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:05,040 INFO L129 PetriNetUnfolder]: 27/65 cut-off events. [2021-03-26 13:51:05,041 INFO L130 PetriNetUnfolder]: For 514/530 co-relation queries the response was YES. [2021-03-26 13:51:05,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 65 events. 27/65 cut-off events. For 514/530 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 183 event pairs, 0 based on Foata normal form. 9/74 useless extension candidates. Maximal degree in co-relation 361. Up to 38 conditions per place. [2021-03-26 13:51:05,042 INFO L132 encePairwiseOnDemand]: 27/38 looper letters, 11 selfloop transitions, 16 changer transitions 2/34 dead transitions. [2021-03-26 13:51:05,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 34 transitions, 390 flow [2021-03-26 13:51:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2021-03-26 13:51:05,042 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2021-03-26 13:51:05,042 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 99 transitions. [2021-03-26 13:51:05,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 99 transitions. [2021-03-26 13:51:05,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:05,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 99 transitions. [2021-03-26 13:51:05,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,043 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 256 flow. Second operand 6 states and 99 transitions. [2021-03-26 13:51:05,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 34 transitions, 390 flow [2021-03-26 13:51:05,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 340 flow, removed 15 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:05,045 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 289 flow [2021-03-26 13:51:05,045 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-26 13:51:05,045 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 26 predicate places. [2021-03-26 13:51:05,045 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:05,045 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 289 flow [2021-03-26 13:51:05,046 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 289 flow [2021-03-26 13:51:05,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 32 transitions, 289 flow [2021-03-26 13:51:05,051 INFO L129 PetriNetUnfolder]: 25/60 cut-off events. [2021-03-26 13:51:05,051 INFO L130 PetriNetUnfolder]: For 387/389 co-relation queries the response was YES. [2021-03-26 13:51:05,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 60 events. 25/60 cut-off events. For 387/389 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 160 event pairs, 1 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 288. Up to 37 conditions per place. [2021-03-26 13:51:05,051 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:05,088 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:05,088 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:05,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-26 13:51:05,088 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 291 flow [2021-03-26 13:51:05,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:05,089 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:05,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-03-26 13:51:05,299 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:05,299 INFO L82 PathProgramCache]: Analyzing trace with hash 299178729, now seen corresponding path program 1 times [2021-03-26 13:51:05,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753691411] [2021-03-26 13:51:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:05,311 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:05,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:05,323 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:05,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:05,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:05,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753691411] [2021-03-26 13:51:05,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665901884] [2021-03-26 13:51:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:05,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,367 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:05,367 INFO L147 QuantifierPusher]: treesize reduction 8, result has 78.4 percent of original size 29 [2021-03-26 13:51:05,368 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-03-26 13:51:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:05,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:05,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:05,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:05,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:05,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:05,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:05,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:05,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:05,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,383 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-03-26 13:51:05,384 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-03-26 13:51:05,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:05,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:05,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:05,399 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.3 percent of original size [2021-03-26 13:51:05,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:51:05,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:05,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:05,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:05,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:05,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066677111] [2021-03-26 13:51:05,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:05,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:05,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:05,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:05,420 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2021-03-26 13:51:05,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 291 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:05,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2021-03-26 13:51:05,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:05,499 INFO L129 PetriNetUnfolder]: 28/70 cut-off events. [2021-03-26 13:51:05,499 INFO L130 PetriNetUnfolder]: For 415/415 co-relation queries the response was YES. [2021-03-26 13:51:05,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 70 events. 28/70 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 217 event pairs, 1 based on Foata normal form. 2/72 useless extension candidates. Maximal degree in co-relation 392. Up to 53 conditions per place. [2021-03-26 13:51:05,500 INFO L132 encePairwiseOnDemand]: 26/39 looper letters, 17 selfloop transitions, 13 changer transitions 2/36 dead transitions. [2021-03-26 13:51:05,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 36 transitions, 411 flow [2021-03-26 13:51:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2021-03-26 13:51:05,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3301282051282051 [2021-03-26 13:51:05,502 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 103 transitions. [2021-03-26 13:51:05,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 103 transitions. [2021-03-26 13:51:05,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:05,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 103 transitions. [2021-03-26 13:51:05,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,502 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,502 INFO L185 Difference]: Start difference. First operand has 40 places, 32 transitions, 291 flow. Second operand 8 states and 103 transitions. [2021-03-26 13:51:05,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 36 transitions, 411 flow [2021-03-26 13:51:05,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 349 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:05,504 INFO L241 Difference]: Finished difference. Result has 47 places, 34 transitions, 309 flow [2021-03-26 13:51:05,504 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2021-03-26 13:51:05,504 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 32 predicate places. [2021-03-26 13:51:05,504 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:05,504 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 34 transitions, 309 flow [2021-03-26 13:51:05,505 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 34 transitions, 309 flow [2021-03-26 13:51:05,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 34 transitions, 309 flow [2021-03-26 13:51:05,507 INFO L129 PetriNetUnfolder]: 26/62 cut-off events. [2021-03-26 13:51:05,508 INFO L130 PetriNetUnfolder]: For 381/389 co-relation queries the response was YES. [2021-03-26 13:51:05,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 62 events. 26/62 cut-off events. For 381/389 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 170 event pairs, 0 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 300. Up to 37 conditions per place. [2021-03-26 13:51:05,508 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:05,579 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:05,579 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:05,580 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-03-26 13:51:05,580 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 279 flow [2021-03-26 13:51:05,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:05,580 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:05,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-26 13:51:05,794 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash -259255914, now seen corresponding path program 1 times [2021-03-26 13:51:05,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:05,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178966510] [2021-03-26 13:51:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:05,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,819 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:05,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:05,841 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:05,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:05,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178966510] [2021-03-26 13:51:05,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730494219] [2021-03-26 13:51:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:05,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:05,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:05,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:05,920 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:05,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:05,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:05,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:05,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:05,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:05,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:05,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:05,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:05,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:05,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:05,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869832315] [2021-03-26 13:51:05,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:05,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:05,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:05,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:05,933 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2021-03-26 13:51:05,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:05,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:05,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2021-03-26 13:51:05,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:06,039 INFO L129 PetriNetUnfolder]: 29/69 cut-off events. [2021-03-26 13:51:06,039 INFO L130 PetriNetUnfolder]: For 624/642 co-relation queries the response was YES. [2021-03-26 13:51:06,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 69 events. 29/69 cut-off events. For 624/642 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 200 event pairs, 0 based on Foata normal form. 10/79 useless extension candidates. Maximal degree in co-relation 396. Up to 41 conditions per place. [2021-03-26 13:51:06,039 INFO L132 encePairwiseOnDemand]: 29/41 looper letters, 11 selfloop transitions, 18 changer transitions 2/36 dead transitions. [2021-03-26 13:51:06,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 425 flow [2021-03-26 13:51:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2021-03-26 13:51:06,040 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2021-03-26 13:51:06,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 100 transitions. [2021-03-26 13:51:06,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 100 transitions. [2021-03-26 13:51:06,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:06,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 100 transitions. [2021-03-26 13:51:06,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,041 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,041 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 279 flow. Second operand 6 states and 100 transitions. [2021-03-26 13:51:06,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 425 flow [2021-03-26 13:51:06,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 371 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:06,043 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 316 flow [2021-03-26 13:51:06,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2021-03-26 13:51:06,043 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 28 predicate places. [2021-03-26 13:51:06,043 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:06,044 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 34 transitions, 316 flow [2021-03-26 13:51:06,044 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 34 transitions, 316 flow [2021-03-26 13:51:06,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 34 transitions, 316 flow [2021-03-26 13:51:06,047 INFO L129 PetriNetUnfolder]: 27/64 cut-off events. [2021-03-26 13:51:06,047 INFO L130 PetriNetUnfolder]: For 482/484 co-relation queries the response was YES. [2021-03-26 13:51:06,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 64 events. 27/64 cut-off events. For 482/484 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 185 event pairs, 1 based on Foata normal form. 1/65 useless extension candidates. Maximal degree in co-relation 317. Up to 40 conditions per place. [2021-03-26 13:51:06,048 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:06,088 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:06,088 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:06,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-26 13:51:06,088 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 318 flow [2021-03-26 13:51:06,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:06,089 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:06,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:06,296 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:06,296 INFO L82 PathProgramCache]: Analyzing trace with hash 301949292, now seen corresponding path program 1 times [2021-03-26 13:51:06,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:06,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109962297] [2021-03-26 13:51:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:06,315 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:06,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:06,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:06,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,332 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:06,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:06,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109962297] [2021-03-26 13:51:06,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972056981] [2021-03-26 13:51:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:06,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:06,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:06,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,361 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:06,362 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-03-26 13:51:06,362 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-03-26 13:51:06,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:06,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:06,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:06,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,375 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 41 [2021-03-26 13:51:06,375 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-03-26 13:51:06,377 INFO L147 QuantifierPusher]: treesize reduction -2, result has 102.9 percent of original size 70 [2021-03-26 13:51:06,377 INFO L142 QuantifierPusher]: treesize reduction -2, result has 102.9 percent of original size [2021-03-26 13:51:06,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-26 13:51:06,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-26 13:51:06,395 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:06,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:51:06,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:06,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:06,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:51:06,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,411 INFO L147 QuantifierPusher]: treesize reduction -1, result has 101.6 percent of original size 63 [2021-03-26 13:51:06,412 INFO L142 QuantifierPusher]: treesize reduction -1, result has 101.6 percent of original size [2021-03-26 13:51:06,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:06,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:06,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:06,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480638637] [2021-03-26 13:51:06,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:06,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:06,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:06,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:06,452 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2021-03-26 13:51:06,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 318 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:06,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2021-03-26 13:51:06,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:06,589 INFO L129 PetriNetUnfolder]: 30/77 cut-off events. [2021-03-26 13:51:06,589 INFO L130 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2021-03-26 13:51:06,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 77 events. 30/77 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 251 event pairs, 1 based on Foata normal form. 3/80 useless extension candidates. Maximal degree in co-relation 446. Up to 57 conditions per place. [2021-03-26 13:51:06,590 INFO L132 encePairwiseOnDemand]: 28/42 looper letters, 18 selfloop transitions, 15 changer transitions 3/40 dead transitions. [2021-03-26 13:51:06,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 480 flow [2021-03-26 13:51:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2021-03-26 13:51:06,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.30238095238095236 [2021-03-26 13:51:06,596 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 127 transitions. [2021-03-26 13:51:06,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 127 transitions. [2021-03-26 13:51:06,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:06,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 127 transitions. [2021-03-26 13:51:06,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,597 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 42.0) internal successors, (462), 11 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,597 INFO L185 Difference]: Start difference. First operand has 42 places, 34 transitions, 318 flow. Second operand 10 states and 127 transitions. [2021-03-26 13:51:06,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 480 flow [2021-03-26 13:51:06,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 410 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:06,599 INFO L241 Difference]: Finished difference. Result has 53 places, 37 transitions, 364 flow [2021-03-26 13:51:06,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2021-03-26 13:51:06,599 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 38 predicate places. [2021-03-26 13:51:06,599 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:06,599 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 37 transitions, 364 flow [2021-03-26 13:51:06,599 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 37 transitions, 364 flow [2021-03-26 13:51:06,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 37 transitions, 364 flow [2021-03-26 13:51:06,603 INFO L129 PetriNetUnfolder]: 28/67 cut-off events. [2021-03-26 13:51:06,603 INFO L130 PetriNetUnfolder]: For 516/518 co-relation queries the response was YES. [2021-03-26 13:51:06,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 67 events. 28/67 cut-off events. For 516/518 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 200 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 351. Up to 41 conditions per place. [2021-03-26 13:51:06,606 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-26 13:51:06,688 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:06,689 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:06,689 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 90 [2021-03-26 13:51:06,689 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 316 flow [2021-03-26 13:51:06,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:06,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:06,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:06,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-26 13:51:06,896 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -173368461, now seen corresponding path program 1 times [2021-03-26 13:51:06,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:06,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749568302] [2021-03-26 13:51:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:06,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,911 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:06,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:06,938 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:06,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:06,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749568302] [2021-03-26 13:51:06,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270516178] [2021-03-26 13:51:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:06,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:06,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:06,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:06,994 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:06,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:06,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:06,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:06,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:06,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:06,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:06,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:07,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:07,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:07,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:07,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356580201] [2021-03-26 13:51:07,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:07,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:07,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:07,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2021-03-26 13:51:07,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:07,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2021-03-26 13:51:07,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:07,103 INFO L129 PetriNetUnfolder]: 31/74 cut-off events. [2021-03-26 13:51:07,103 INFO L130 PetriNetUnfolder]: For 784/804 co-relation queries the response was YES. [2021-03-26 13:51:07,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 74 events. 31/74 cut-off events. For 784/804 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 221 event pairs, 0 based on Foata normal form. 11/85 useless extension candidates. Maximal degree in co-relation 449. Up to 45 conditions per place. [2021-03-26 13:51:07,104 INFO L132 encePairwiseOnDemand]: 31/44 looper letters, 12 selfloop transitions, 20 changer transitions 2/39 dead transitions. [2021-03-26 13:51:07,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 476 flow [2021-03-26 13:51:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2021-03-26 13:51:07,105 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2021-03-26 13:51:07,105 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 102 transitions. [2021-03-26 13:51:07,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 102 transitions. [2021-03-26 13:51:07,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:07,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 102 transitions. [2021-03-26 13:51:07,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,106 INFO L185 Difference]: Start difference. First operand has 48 places, 35 transitions, 316 flow. Second operand 6 states and 102 transitions. [2021-03-26 13:51:07,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 476 flow [2021-03-26 13:51:07,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 427 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:07,108 INFO L241 Difference]: Finished difference. Result has 48 places, 37 transitions, 364 flow [2021-03-26 13:51:07,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2021-03-26 13:51:07,108 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 33 predicate places. [2021-03-26 13:51:07,108 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:07,108 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 37 transitions, 364 flow [2021-03-26 13:51:07,108 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 37 transitions, 364 flow [2021-03-26 13:51:07,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 37 transitions, 364 flow [2021-03-26 13:51:07,112 INFO L129 PetriNetUnfolder]: 30/69 cut-off events. [2021-03-26 13:51:07,112 INFO L130 PetriNetUnfolder]: For 611/621 co-relation queries the response was YES. [2021-03-26 13:51:07,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 69 events. 30/69 cut-off events. For 611/621 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 205 event pairs, 1 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 371. Up to 42 conditions per place. [2021-03-26 13:51:07,112 INFO L142 LiptonReduction]: Number of co-enabled transitions 22 [2021-03-26 13:51:07,186 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:07,186 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:07,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-26 13:51:07,187 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 363 flow [2021-03-26 13:51:07,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:07,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:07,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-26 13:51:07,387 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:07,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:07,388 INFO L82 PathProgramCache]: Analyzing trace with hash 131269832, now seen corresponding path program 1 times [2021-03-26 13:51:07,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:07,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161906196] [2021-03-26 13:51:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:07,406 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:07,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:07,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:07,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:07,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:07,430 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:07,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:07,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161906196] [2021-03-26 13:51:07,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557848114] [2021-03-26 13:51:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:07,452 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-26 13:51:07,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:07,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,458 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:07,459 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-03-26 13:51:07,459 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-26 13:51:07,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:07,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:07,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:07,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:07,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,476 INFO L147 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size 18 [2021-03-26 13:51:07,477 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-03-26 13:51:07,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:07,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:07,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:07,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,490 INFO L147 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size 21 [2021-03-26 13:51:07,491 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-03-26 13:51:07,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:07,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:07,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:07,506 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 13:51:07,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:07,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:07,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:07,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:07,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:07,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:07,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690393674] [2021-03-26 13:51:07,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:07,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:07,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:07,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2021-03-26 13:51:07,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 363 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:07,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2021-03-26 13:51:07,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:07,679 INFO L129 PetriNetUnfolder]: 32/78 cut-off events. [2021-03-26 13:51:07,680 INFO L130 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2021-03-26 13:51:07,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 78 events. 32/78 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 249 event pairs, 1 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 497. Up to 60 conditions per place. [2021-03-26 13:51:07,680 INFO L132 encePairwiseOnDemand]: 31/46 looper letters, 19 selfloop transitions, 11 changer transitions 6/40 dead transitions. [2021-03-26 13:51:07,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 507 flow [2021-03-26 13:51:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:07,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2021-03-26 13:51:07,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28532608695652173 [2021-03-26 13:51:07,681 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 105 transitions. [2021-03-26 13:51:07,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 105 transitions. [2021-03-26 13:51:07,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:07,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 105 transitions. [2021-03-26 13:51:07,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,682 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,682 INFO L185 Difference]: Start difference. First operand has 46 places, 36 transitions, 363 flow. Second operand 8 states and 105 transitions. [2021-03-26 13:51:07,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 507 flow [2021-03-26 13:51:07,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 403 flow, removed 27 selfloop flow, removed 6 redundant places. [2021-03-26 13:51:07,684 INFO L241 Difference]: Finished difference. Result has 51 places, 34 transitions, 286 flow [2021-03-26 13:51:07,684 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2021-03-26 13:51:07,685 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 36 predicate places. [2021-03-26 13:51:07,685 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:07,685 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 34 transitions, 286 flow [2021-03-26 13:51:07,685 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 34 transitions, 286 flow [2021-03-26 13:51:07,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 34 transitions, 286 flow [2021-03-26 13:51:07,688 INFO L129 PetriNetUnfolder]: 29/65 cut-off events. [2021-03-26 13:51:07,688 INFO L130 PetriNetUnfolder]: For 501/510 co-relation queries the response was YES. [2021-03-26 13:51:07,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 65 events. 29/65 cut-off events. For 501/510 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 187 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 317. Up to 40 conditions per place. [2021-03-26 13:51:07,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 13:51:07,690 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:07,690 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:51:07,690 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 13:51:07,690 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 286 flow [2021-03-26 13:51:07,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:07,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:07,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:07,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-26 13:51:07,904 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:07,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:07,904 INFO L82 PathProgramCache]: Analyzing trace with hash -87481008, now seen corresponding path program 1 times [2021-03-26 13:51:07,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:07,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157136291] [2021-03-26 13:51:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:07,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,934 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:07,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:07,956 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:07,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:07,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157136291] [2021-03-26 13:51:07,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253611354] [2021-03-26 13:51:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:07,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:07,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:07,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:07,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:07,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,011 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:08,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:08,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:08,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:08,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:08,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:08,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:08,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:08,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:08,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673239396] [2021-03-26 13:51:08,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:08,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:08,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:08,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2021-03-26 13:51:08,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:08,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2021-03-26 13:51:08,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:08,123 INFO L129 PetriNetUnfolder]: 32/73 cut-off events. [2021-03-26 13:51:08,123 INFO L130 PetriNetUnfolder]: For 799/811 co-relation queries the response was YES. [2021-03-26 13:51:08,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 73 events. 32/73 cut-off events. For 799/811 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 212 event pairs, 0 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 436. Up to 45 conditions per place. [2021-03-26 13:51:08,124 INFO L132 encePairwiseOnDemand]: 33/46 looper letters, 10 selfloop transitions, 21 changer transitions 2/38 dead transitions. [2021-03-26 13:51:08,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 452 flow [2021-03-26 13:51:08,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2021-03-26 13:51:08,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.36231884057971014 [2021-03-26 13:51:08,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 100 transitions. [2021-03-26 13:51:08,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 100 transitions. [2021-03-26 13:51:08,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:08,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 100 transitions. [2021-03-26 13:51:08,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,128 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 286 flow. Second operand 6 states and 100 transitions. [2021-03-26 13:51:08,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 452 flow [2021-03-26 13:51:08,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 416 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-26 13:51:08,132 INFO L241 Difference]: Finished difference. Result has 46 places, 36 transitions, 355 flow [2021-03-26 13:51:08,132 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2021-03-26 13:51:08,132 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 31 predicate places. [2021-03-26 13:51:08,132 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:08,132 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 36 transitions, 355 flow [2021-03-26 13:51:08,132 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 36 transitions, 355 flow [2021-03-26 13:51:08,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 36 transitions, 355 flow [2021-03-26 13:51:08,136 INFO L129 PetriNetUnfolder]: 31/71 cut-off events. [2021-03-26 13:51:08,136 INFO L130 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2021-03-26 13:51:08,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 71 events. 31/71 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 208 event pairs, 1 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 376. Up to 44 conditions per place. [2021-03-26 13:51:08,137 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 13:51:08,172 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:08,172 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:08,172 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-26 13:51:08,173 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 357 flow [2021-03-26 13:51:08,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,173 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:08,173 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:08,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:08,387 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:08,387 INFO L82 PathProgramCache]: Analyzing trace with hash -535781717, now seen corresponding path program 2 times [2021-03-26 13:51:08,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:08,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025632624] [2021-03-26 13:51:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:08,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:51:08,418 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:08,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:08,446 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:08,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:08,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025632624] [2021-03-26 13:51:08,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563758625] [2021-03-26 13:51:08,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:08,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-26 13:51:08,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-26 13:51:08,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 13:51:08,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:08,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,504 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-03-26 13:51:08,504 INFO L142 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-03-26 13:51:08,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,514 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-03-26 13:51:08,514 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size [2021-03-26 13:51:08,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,529 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 13:51:08,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:08,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:08,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:08,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-26 13:51:08,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:51:08,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:51:08,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:08,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:08,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:08,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233984727] [2021-03-26 13:51:08,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:08,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:08,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:08,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:08,543 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2021-03-26 13:51:08,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 357 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:08,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2021-03-26 13:51:08,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:08,689 INFO L129 PetriNetUnfolder]: 34/77 cut-off events. [2021-03-26 13:51:08,689 INFO L130 PetriNetUnfolder]: For 660/676 co-relation queries the response was YES. [2021-03-26 13:51:08,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 77 events. 34/77 cut-off events. For 660/676 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 230 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 495. Up to 58 conditions per place. [2021-03-26 13:51:08,690 INFO L132 encePairwiseOnDemand]: 32/47 looper letters, 15 selfloop transitions, 17 changer transitions 2/40 dead transitions. [2021-03-26 13:51:08,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 511 flow [2021-03-26 13:51:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2021-03-26 13:51:08,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3617021276595745 [2021-03-26 13:51:08,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 102 transitions. [2021-03-26 13:51:08,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 102 transitions. [2021-03-26 13:51:08,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:08,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 102 transitions. [2021-03-26 13:51:08,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,692 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,692 INFO L185 Difference]: Start difference. First operand has 45 places, 36 transitions, 357 flow. Second operand 6 states and 102 transitions. [2021-03-26 13:51:08,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 511 flow [2021-03-26 13:51:08,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 427 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:08,694 INFO L241 Difference]: Finished difference. Result has 48 places, 38 transitions, 370 flow [2021-03-26 13:51:08,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2021-03-26 13:51:08,694 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 33 predicate places. [2021-03-26 13:51:08,694 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:08,694 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 38 transitions, 370 flow [2021-03-26 13:51:08,694 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 38 transitions, 370 flow [2021-03-26 13:51:08,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 370 flow [2021-03-26 13:51:08,699 INFO L129 PetriNetUnfolder]: 33/74 cut-off events. [2021-03-26 13:51:08,699 INFO L130 PetriNetUnfolder]: For 567/581 co-relation queries the response was YES. [2021-03-26 13:51:08,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 74 events. 33/74 cut-off events. For 567/581 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 214 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 396. Up to 46 conditions per place. [2021-03-26 13:51:08,700 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:08,742 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:08,742 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:08,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-26 13:51:08,743 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 377 flow [2021-03-26 13:51:08,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:08,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:08,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:08,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:08,944 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:08,944 INFO L82 PathProgramCache]: Analyzing trace with hash -30222706, now seen corresponding path program 1 times [2021-03-26 13:51:08,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:08,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633386571] [2021-03-26 13:51:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:08,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:08,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:08,959 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:08,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:08,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:08,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:08,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633386571] [2021-03-26 13:51:08,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236398737] [2021-03-26 13:51:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:09,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:09,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:09,038 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:09,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:09,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:09,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:09,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:09,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:09,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:09,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:09,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:09,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596594190] [2021-03-26 13:51:09,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:09,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:09,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2021-03-26 13:51:09,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 377 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:09,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2021-03-26 13:51:09,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:09,148 INFO L129 PetriNetUnfolder]: 36/82 cut-off events. [2021-03-26 13:51:09,149 INFO L130 PetriNetUnfolder]: For 692/710 co-relation queries the response was YES. [2021-03-26 13:51:09,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 82 events. 36/82 cut-off events. For 692/710 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 271 event pairs, 1 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 532. Up to 51 conditions per place. [2021-03-26 13:51:09,149 INFO L132 encePairwiseOnDemand]: 33/48 looper letters, 11 selfloop transitions, 24 changer transitions 2/42 dead transitions. [2021-03-26 13:51:09,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 561 flow [2021-03-26 13:51:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2021-03-26 13:51:09,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2021-03-26 13:51:09,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 102 transitions. [2021-03-26 13:51:09,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 102 transitions. [2021-03-26 13:51:09,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:09,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 102 transitions. [2021-03-26 13:51:09,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,152 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,152 INFO L185 Difference]: Start difference. First operand has 47 places, 38 transitions, 377 flow. Second operand 6 states and 102 transitions. [2021-03-26 13:51:09,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 561 flow [2021-03-26 13:51:09,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 514 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:09,157 INFO L241 Difference]: Finished difference. Result has 50 places, 40 transitions, 445 flow [2021-03-26 13:51:09,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=445, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2021-03-26 13:51:09,157 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 35 predicate places. [2021-03-26 13:51:09,157 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:09,158 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 40 transitions, 445 flow [2021-03-26 13:51:09,158 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 40 transitions, 445 flow [2021-03-26 13:51:09,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 445 flow [2021-03-26 13:51:09,163 INFO L129 PetriNetUnfolder]: 35/78 cut-off events. [2021-03-26 13:51:09,163 INFO L130 PetriNetUnfolder]: For 833/837 co-relation queries the response was YES. [2021-03-26 13:51:09,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 78 events. 35/78 cut-off events. For 833/837 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 243 event pairs, 1 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 467. Up to 46 conditions per place. [2021-03-26 13:51:09,163 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 13:51:09,202 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:09,202 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:09,202 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-26 13:51:09,203 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 447 flow [2021-03-26 13:51:09,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,208 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:09,208 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:09,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-26 13:51:09,416 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:09,416 INFO L82 PathProgramCache]: Analyzing trace with hash 666761491, now seen corresponding path program 1 times [2021-03-26 13:51:09,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:09,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787344471] [2021-03-26 13:51:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:09,432 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:09,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:09,443 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-03-26 13:51:09,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:09,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:09,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:09,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:09,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787344471] [2021-03-26 13:51:09,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787070728] [2021-03-26 13:51:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:09,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:09,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:09,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,489 INFO L147 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size 18 [2021-03-26 13:51:09,489 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.0 percent of original size [2021-03-26 13:51:09,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:09,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:09,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:09,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:09,517 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-26 13:51:09,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:09,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:09,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:09,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:09,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:09,535 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-03-26 13:51:09,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:09,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:09,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:09,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:09,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:09,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:09,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:09,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321385568] [2021-03-26 13:51:09,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:09,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:09,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:09,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:09,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2021-03-26 13:51:09,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 447 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:09,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2021-03-26 13:51:09,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:09,684 INFO L129 PetriNetUnfolder]: 40/99 cut-off events. [2021-03-26 13:51:09,684 INFO L130 PetriNetUnfolder]: For 1006/1006 co-relation queries the response was YES. [2021-03-26 13:51:09,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 99 events. 40/99 cut-off events. For 1006/1006 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 347 event pairs, 1 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 697. Up to 73 conditions per place. [2021-03-26 13:51:09,685 INFO L132 encePairwiseOnDemand]: 32/49 looper letters, 24 selfloop transitions, 20 changer transitions 1/49 dead transitions. [2021-03-26 13:51:09,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 711 flow [2021-03-26 13:51:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:51:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:51:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2021-03-26 13:51:09,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29737609329446063 [2021-03-26 13:51:09,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 102 transitions. [2021-03-26 13:51:09,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 102 transitions. [2021-03-26 13:51:09,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:09,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 102 transitions. [2021-03-26 13:51:09,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,687 INFO L185 Difference]: Start difference. First operand has 49 places, 40 transitions, 447 flow. Second operand 7 states and 102 transitions. [2021-03-26 13:51:09,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 711 flow [2021-03-26 13:51:09,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 611 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:09,691 INFO L241 Difference]: Finished difference. Result has 54 places, 44 transitions, 525 flow [2021-03-26 13:51:09,691 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=525, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2021-03-26 13:51:09,691 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 39 predicate places. [2021-03-26 13:51:09,691 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:09,691 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 44 transitions, 525 flow [2021-03-26 13:51:09,691 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 44 transitions, 525 flow [2021-03-26 13:51:09,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 44 transitions, 525 flow [2021-03-26 13:51:09,697 INFO L129 PetriNetUnfolder]: 38/93 cut-off events. [2021-03-26 13:51:09,697 INFO L130 PetriNetUnfolder]: For 972/974 co-relation queries the response was YES. [2021-03-26 13:51:09,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 93 events. 38/93 cut-off events. For 972/974 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 321 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 573. Up to 52 conditions per place. [2021-03-26 13:51:09,698 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:09,735 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:09,735 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:09,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-26 13:51:09,736 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 526 flow [2021-03-26 13:51:09,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:09,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:09,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:09,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-03-26 13:51:09,944 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:09,944 INFO L82 PathProgramCache]: Analyzing trace with hash 27035596, now seen corresponding path program 1 times [2021-03-26 13:51:09,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:09,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392108878] [2021-03-26 13:51:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:09,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:09,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:09,959 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:09,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:09,982 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:09,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:10,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392108878] [2021-03-26 13:51:10,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725455227] [2021-03-26 13:51:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:10,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:10,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,049 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:10,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:10,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:10,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:10,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:10,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:10,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:10,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:10,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:10,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776966868] [2021-03-26 13:51:10,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:10,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:10,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:10,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:10,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2021-03-26 13:51:10,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:10,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2021-03-26 13:51:10,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:10,167 INFO L129 PetriNetUnfolder]: 41/101 cut-off events. [2021-03-26 13:51:10,167 INFO L130 PetriNetUnfolder]: For 1574/1595 co-relation queries the response was YES. [2021-03-26 13:51:10,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 101 events. 41/101 cut-off events. For 1574/1595 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 368 event pairs, 0 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 726. Up to 57 conditions per place. [2021-03-26 13:51:10,168 INFO L132 encePairwiseOnDemand]: 34/50 looper letters, 15 selfloop transitions, 26 changer transitions 2/48 dead transitions. [2021-03-26 13:51:10,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 738 flow [2021-03-26 13:51:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2021-03-26 13:51:10,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2021-03-26 13:51:10,169 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 104 transitions. [2021-03-26 13:51:10,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 104 transitions. [2021-03-26 13:51:10,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:10,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 104 transitions. [2021-03-26 13:51:10,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,169 INFO L185 Difference]: Start difference. First operand has 53 places, 44 transitions, 526 flow. Second operand 6 states and 104 transitions. [2021-03-26 13:51:10,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 738 flow [2021-03-26 13:51:10,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 634 flow, removed 43 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:10,173 INFO L241 Difference]: Finished difference. Result has 57 places, 46 transitions, 549 flow [2021-03-26 13:51:10,173 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=549, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2021-03-26 13:51:10,173 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 42 predicate places. [2021-03-26 13:51:10,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:10,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 46 transitions, 549 flow [2021-03-26 13:51:10,174 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 46 transitions, 549 flow [2021-03-26 13:51:10,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 46 transitions, 549 flow [2021-03-26 13:51:10,179 INFO L129 PetriNetUnfolder]: 40/97 cut-off events. [2021-03-26 13:51:10,179 INFO L130 PetriNetUnfolder]: For 890/909 co-relation queries the response was YES. [2021-03-26 13:51:10,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 97 events. 40/97 cut-off events. For 890/909 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 357 event pairs, 1 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 605. Up to 53 conditions per place. [2021-03-26 13:51:10,179 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:10,220 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:10,220 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:10,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-26 13:51:10,221 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 550 flow [2021-03-26 13:51:10,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:10,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:10,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:10,435 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1788092681, now seen corresponding path program 3 times [2021-03-26 13:51:10,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:10,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13656930] [2021-03-26 13:51:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:10,443 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 13:51:10,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:51:10,453 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-03-26 13:51:10,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:10,462 INFO L142 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-03-26 13:51:10,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:10,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:10,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13656930] [2021-03-26 13:51:10,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914067721] [2021-03-26 13:51:10,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:10,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-26 13:51:10,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-26 13:51:10,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-26 13:51:10,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:10,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:10,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:10,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,511 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size 32 [2021-03-26 13:51:10,511 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:10,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:10,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:10,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:10,522 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-03-26 13:51:10,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:10,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:10,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:51:10,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:10,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:10,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:10,540 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:10,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:10,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:10,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:10,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:10,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,545 INFO L147 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size 64 [2021-03-26 13:51:10,546 INFO L142 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size [2021-03-26 13:51:10,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-26 13:51:10,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:10,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:10,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:10,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408089351] [2021-03-26 13:51:10,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:10,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:10,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:10,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:10,569 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2021-03-26 13:51:10,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 550 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:10,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2021-03-26 13:51:10,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:10,699 INFO L129 PetriNetUnfolder]: 42/99 cut-off events. [2021-03-26 13:51:10,699 INFO L130 PetriNetUnfolder]: For 1117/1117 co-relation queries the response was YES. [2021-03-26 13:51:10,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 99 events. 42/99 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 342 event pairs, 1 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 718. Up to 81 conditions per place. [2021-03-26 13:51:10,700 INFO L132 encePairwiseOnDemand]: 32/51 looper letters, 23 selfloop transitions, 21 changer transitions 1/49 dead transitions. [2021-03-26 13:51:10,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 663 flow [2021-03-26 13:51:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:51:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:51:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2021-03-26 13:51:10,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2801120448179272 [2021-03-26 13:51:10,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 100 transitions. [2021-03-26 13:51:10,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 100 transitions. [2021-03-26 13:51:10,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:10,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 100 transitions. [2021-03-26 13:51:10,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,705 INFO L185 Difference]: Start difference. First operand has 56 places, 46 transitions, 550 flow. Second operand 7 states and 100 transitions. [2021-03-26 13:51:10,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 663 flow [2021-03-26 13:51:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 557 flow, removed 28 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:10,708 INFO L241 Difference]: Finished difference. Result has 61 places, 48 transitions, 515 flow [2021-03-26 13:51:10,708 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2021-03-26 13:51:10,708 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 46 predicate places. [2021-03-26 13:51:10,709 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:10,709 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 48 transitions, 515 flow [2021-03-26 13:51:10,709 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 48 transitions, 515 flow [2021-03-26 13:51:10,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 48 transitions, 515 flow [2021-03-26 13:51:10,713 INFO L129 PetriNetUnfolder]: 40/93 cut-off events. [2021-03-26 13:51:10,714 INFO L130 PetriNetUnfolder]: For 1007/1012 co-relation queries the response was YES. [2021-03-26 13:51:10,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 93 events. 40/93 cut-off events. For 1007/1012 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 301 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 566. Up to 52 conditions per place. [2021-03-26 13:51:10,716 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:10,743 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:10,743 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:10,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 13:51:10,743 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 519 flow [2021-03-26 13:51:10,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:10,744 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:10,744 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:10,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-03-26 13:51:10,957 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash 85101138, now seen corresponding path program 1 times [2021-03-26 13:51:10,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:10,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513691297] [2021-03-26 13:51:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:10,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:10,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:10,975 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:10,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:10,996 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:10,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:11,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513691297] [2021-03-26 13:51:11,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163058028] [2021-03-26 13:51:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:11,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:11,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:11,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:11,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:11,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:11,046 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:11,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:11,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:11,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:11,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:11,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:11,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:11,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:11,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:11,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456943926] [2021-03-26 13:51:11,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:11,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:11,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:11,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:11,061 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2021-03-26 13:51:11,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 519 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:11,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2021-03-26 13:51:11,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:11,173 INFO L129 PetriNetUnfolder]: 43/101 cut-off events. [2021-03-26 13:51:11,174 INFO L130 PetriNetUnfolder]: For 1534/1557 co-relation queries the response was YES. [2021-03-26 13:51:11,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 101 events. 43/101 cut-off events. For 1534/1557 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 366 event pairs, 0 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 730. Up to 58 conditions per place. [2021-03-26 13:51:11,174 INFO L132 encePairwiseOnDemand]: 35/52 looper letters, 17 selfloop transitions, 28 changer transitions 2/52 dead transitions. [2021-03-26 13:51:11,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 747 flow [2021-03-26 13:51:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2021-03-26 13:51:11,175 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33974358974358976 [2021-03-26 13:51:11,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 106 transitions. [2021-03-26 13:51:11,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 106 transitions. [2021-03-26 13:51:11,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:11,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 106 transitions. [2021-03-26 13:51:11,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,176 INFO L185 Difference]: Start difference. First operand has 60 places, 48 transitions, 519 flow. Second operand 6 states and 106 transitions. [2021-03-26 13:51:11,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 747 flow [2021-03-26 13:51:11,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 688 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-26 13:51:11,179 INFO L241 Difference]: Finished difference. Result has 62 places, 50 transitions, 595 flow [2021-03-26 13:51:11,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=595, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2021-03-26 13:51:11,179 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 47 predicate places. [2021-03-26 13:51:11,179 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:11,180 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 50 transitions, 595 flow [2021-03-26 13:51:11,180 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 50 transitions, 595 flow [2021-03-26 13:51:11,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 50 transitions, 595 flow [2021-03-26 13:51:11,185 INFO L129 PetriNetUnfolder]: 42/97 cut-off events. [2021-03-26 13:51:11,185 INFO L130 PetriNetUnfolder]: For 1346/1366 co-relation queries the response was YES. [2021-03-26 13:51:11,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 97 events. 42/97 cut-off events. For 1346/1366 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 360 event pairs, 1 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 635. Up to 54 conditions per place. [2021-03-26 13:51:11,185 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 13:51:11,223 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:11,223 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:11,223 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-26 13:51:11,223 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 596 flow [2021-03-26 13:51:11,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,223 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:11,224 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:11,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:11,436 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:11,436 INFO L82 PathProgramCache]: Analyzing trace with hash 267688305, now seen corresponding path program 1 times [2021-03-26 13:51:11,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:11,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497203941] [2021-03-26 13:51:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:11,447 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:11,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:11,459 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-03-26 13:51:11,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:11,469 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-03-26 13:51:11,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:11,478 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:11,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:11,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497203941] [2021-03-26 13:51:11,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469538917] [2021-03-26 13:51:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:11,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:11,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:11,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:11,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,511 INFO L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-03-26 13:51:11,512 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-03-26 13:51:11,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:11,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:11,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:51:11,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:11,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:11,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:11,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:11,535 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 13:51:11,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:11,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:11,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:11,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:11,549 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-03-26 13:51:11,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:11,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:11,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:11,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:11,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:11,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:11,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:11,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:11,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828328587] [2021-03-26 13:51:11,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:11,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:11,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2021-03-26 13:51:11,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 596 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:11,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2021-03-26 13:51:11,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:11,791 INFO L129 PetriNetUnfolder]: 47/117 cut-off events. [2021-03-26 13:51:11,791 INFO L130 PetriNetUnfolder]: For 1894/1894 co-relation queries the response was YES. [2021-03-26 13:51:11,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 117 events. 47/117 cut-off events. For 1894/1894 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 450 event pairs, 1 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 909. Up to 88 conditions per place. [2021-03-26 13:51:11,792 INFO L132 encePairwiseOnDemand]: 32/53 looper letters, 26 selfloop transitions, 31 changer transitions 1/62 dead transitions. [2021-03-26 13:51:11,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 1004 flow [2021-03-26 13:51:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:51:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:51:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2021-03-26 13:51:11,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.25900514579759865 [2021-03-26 13:51:11,793 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 151 transitions. [2021-03-26 13:51:11,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 151 transitions. [2021-03-26 13:51:11,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:11,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 151 transitions. [2021-03-26 13:51:11,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,794 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,794 INFO L185 Difference]: Start difference. First operand has 61 places, 50 transitions, 596 flow. Second operand 11 states and 151 transitions. [2021-03-26 13:51:11,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 1004 flow [2021-03-26 13:51:11,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 886 flow, removed 32 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:11,799 INFO L241 Difference]: Finished difference. Result has 70 places, 59 transitions, 813 flow [2021-03-26 13:51:11,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=813, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2021-03-26 13:51:11,800 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 55 predicate places. [2021-03-26 13:51:11,800 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:11,800 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 59 transitions, 813 flow [2021-03-26 13:51:11,800 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 59 transitions, 813 flow [2021-03-26 13:51:11,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 59 transitions, 813 flow [2021-03-26 13:51:11,806 INFO L129 PetriNetUnfolder]: 45/111 cut-off events. [2021-03-26 13:51:11,806 INFO L130 PetriNetUnfolder]: For 1628/1631 co-relation queries the response was YES. [2021-03-26 13:51:11,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 111 events. 45/111 cut-off events. For 1628/1631 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 412 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 747. Up to 61 conditions per place. [2021-03-26 13:51:11,806 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:11,869 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:11,870 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:11,870 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 70 [2021-03-26 13:51:11,870 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 817 flow [2021-03-26 13:51:11,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:11,870 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:11,870 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:12,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-26 13:51:12,085 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:12,085 INFO L82 PathProgramCache]: Analyzing trace with hash 142445930, now seen corresponding path program 1 times [2021-03-26 13:51:12,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:12,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371795841] [2021-03-26 13:51:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:12,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,098 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:12,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:12,119 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:12,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371795841] [2021-03-26 13:51:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694870892] [2021-03-26 13:51:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:12,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:12,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:12,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:12,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,187 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:12,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:12,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:12,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:12,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:12,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:12,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:12,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:12,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:12,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130309947] [2021-03-26 13:51:12,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:12,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:12,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:12,202 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2021-03-26 13:51:12,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 817 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:12,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2021-03-26 13:51:12,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:12,332 INFO L129 PetriNetUnfolder]: 48/121 cut-off events. [2021-03-26 13:51:12,332 INFO L130 PetriNetUnfolder]: For 2042/2045 co-relation queries the response was YES. [2021-03-26 13:51:12,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 121 events. 48/121 cut-off events. For 2042/2045 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 485 event pairs, 0 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 954. Up to 70 conditions per place. [2021-03-26 13:51:12,333 INFO L132 encePairwiseOnDemand]: 37/55 looper letters, 24 selfloop transitions, 30 changer transitions 2/63 dead transitions. [2021-03-26 13:51:12,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 1081 flow [2021-03-26 13:51:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2021-03-26 13:51:12,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2021-03-26 13:51:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 109 transitions. [2021-03-26 13:51:12,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 109 transitions. [2021-03-26 13:51:12,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:12,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 109 transitions. [2021-03-26 13:51:12,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,335 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,335 INFO L185 Difference]: Start difference. First operand has 69 places, 59 transitions, 817 flow. Second operand 6 states and 109 transitions. [2021-03-26 13:51:12,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 1081 flow [2021-03-26 13:51:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 768 flow, removed 128 selfloop flow, removed 6 redundant places. [2021-03-26 13:51:12,340 INFO L241 Difference]: Finished difference. Result has 70 places, 61 transitions, 655 flow [2021-03-26 13:51:12,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=655, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2021-03-26 13:51:12,341 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 55 predicate places. [2021-03-26 13:51:12,341 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:12,341 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 655 flow [2021-03-26 13:51:12,341 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 655 flow [2021-03-26 13:51:12,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 61 transitions, 655 flow [2021-03-26 13:51:12,347 INFO L129 PetriNetUnfolder]: 47/115 cut-off events. [2021-03-26 13:51:12,347 INFO L130 PetriNetUnfolder]: For 1458/1481 co-relation queries the response was YES. [2021-03-26 13:51:12,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 115 events. 47/115 cut-off events. For 1458/1481 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 455 event pairs, 0 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 670. Up to 59 conditions per place. [2021-03-26 13:51:12,347 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:12,386 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:12,387 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:12,387 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-26 13:51:12,387 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 657 flow [2021-03-26 13:51:12,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:12,387 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:12,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-03-26 13:51:12,590 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:12,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1014816794, now seen corresponding path program 1 times [2021-03-26 13:51:12,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:12,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31779952] [2021-03-26 13:51:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:12,604 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:12,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:12,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:51:12,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:12,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,628 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:12,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:12,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31779952] [2021-03-26 13:51:12,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235015174] [2021-03-26 13:51:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:12,649 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-26 13:51:12,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:12,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:12,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:12,671 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:12,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:12,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:12,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:12,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:12,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:12,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:12,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,687 INFO L147 QuantifierPusher]: treesize reduction 5, result has 90.0 percent of original size 45 [2021-03-26 13:51:12,687 INFO L142 QuantifierPusher]: treesize reduction 5, result has 90.2 percent of original size [2021-03-26 13:51:12,688 INFO L147 QuantifierPusher]: treesize reduction -2, result has 102.3 percent of original size 89 [2021-03-26 13:51:12,689 INFO L142 QuantifierPusher]: treesize reduction -2, result has 102.3 percent of original size [2021-03-26 13:51:12,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-03-26 13:51:12,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-03-26 13:51:12,707 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-03-26 13:51:12,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-03-26 13:51:12,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:12,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:12,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:12,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-03-26 13:51:12,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:12,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:12,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:12,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:12,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943486986] [2021-03-26 13:51:12,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:12,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:12,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:12,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:12,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 56 [2021-03-26 13:51:12,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 657 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:12,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 56 [2021-03-26 13:51:12,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:12,882 INFO L129 PetriNetUnfolder]: 49/126 cut-off events. [2021-03-26 13:51:12,882 INFO L130 PetriNetUnfolder]: For 1671/1671 co-relation queries the response was YES. [2021-03-26 13:51:12,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 126 events. 49/126 cut-off events. For 1671/1671 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 513 event pairs, 1 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 887. Up to 102 conditions per place. [2021-03-26 13:51:12,883 INFO L132 encePairwiseOnDemand]: 33/56 looper letters, 34 selfloop transitions, 25 changer transitions 2/65 dead transitions. [2021-03-26 13:51:12,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 935 flow [2021-03-26 13:51:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:51:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:51:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2021-03-26 13:51:12,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.24801587301587302 [2021-03-26 13:51:12,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 125 transitions. [2021-03-26 13:51:12,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 125 transitions. [2021-03-26 13:51:12,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:12,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 125 transitions. [2021-03-26 13:51:12,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,885 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,885 INFO L185 Difference]: Start difference. First operand has 69 places, 61 transitions, 657 flow. Second operand 9 states and 125 transitions. [2021-03-26 13:51:12,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 935 flow [2021-03-26 13:51:12,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 815 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:12,891 INFO L241 Difference]: Finished difference. Result has 77 places, 63 transitions, 677 flow [2021-03-26 13:51:12,891 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=677, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2021-03-26 13:51:12,891 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 62 predicate places. [2021-03-26 13:51:12,892 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:12,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 63 transitions, 677 flow [2021-03-26 13:51:12,892 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 63 transitions, 677 flow [2021-03-26 13:51:12,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions, 677 flow [2021-03-26 13:51:12,898 INFO L129 PetriNetUnfolder]: 47/117 cut-off events. [2021-03-26 13:51:12,898 INFO L130 PetriNetUnfolder]: For 1426/1449 co-relation queries the response was YES. [2021-03-26 13:51:12,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 117 events. 47/117 cut-off events. For 1426/1449 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 457 event pairs, 0 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 659. Up to 60 conditions per place. [2021-03-26 13:51:12,899 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:12,971 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:12,971 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:12,971 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 79 [2021-03-26 13:51:12,971 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 631 flow [2021-03-26 13:51:12,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:12,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:12,972 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:13,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-26 13:51:13,186 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:13,186 INFO L82 PathProgramCache]: Analyzing trace with hash 228246893, now seen corresponding path program 1 times [2021-03-26 13:51:13,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:13,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995001732] [2021-03-26 13:51:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:13,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,202 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:13,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:13,230 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:13,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:13,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995001732] [2021-03-26 13:51:13,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707946359] [2021-03-26 13:51:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:13,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:13,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:13,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:13,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:13,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:13,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:13,290 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:13,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:13,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:13,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:13,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:13,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:13,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:13,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:13,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:13,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292279167] [2021-03-26 13:51:13,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:13,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:13,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:13,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:13,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 58 [2021-03-26 13:51:13,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 631 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:13,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 58 [2021-03-26 13:51:13,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:13,426 INFO L129 PetriNetUnfolder]: 50/123 cut-off events. [2021-03-26 13:51:13,426 INFO L130 PetriNetUnfolder]: For 2125/2152 co-relation queries the response was YES. [2021-03-26 13:51:13,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 123 events. 50/123 cut-off events. For 2125/2152 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 499 event pairs, 0 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 823. Up to 71 conditions per place. [2021-03-26 13:51:13,427 INFO L132 encePairwiseOnDemand]: 39/58 looper letters, 24 selfloop transitions, 32 changer transitions 2/65 dead transitions. [2021-03-26 13:51:13,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 903 flow [2021-03-26 13:51:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2021-03-26 13:51:13,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.31896551724137934 [2021-03-26 13:51:13,428 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 111 transitions. [2021-03-26 13:51:13,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 111 transitions. [2021-03-26 13:51:13,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:13,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 111 transitions. [2021-03-26 13:51:13,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,429 INFO L185 Difference]: Start difference. First operand has 73 places, 61 transitions, 631 flow. Second operand 6 states and 111 transitions. [2021-03-26 13:51:13,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 903 flow [2021-03-26 13:51:13,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 803 flow, removed 27 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:13,434 INFO L241 Difference]: Finished difference. Result has 72 places, 63 transitions, 686 flow [2021-03-26 13:51:13,434 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=686, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2021-03-26 13:51:13,435 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 57 predicate places. [2021-03-26 13:51:13,435 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:13,435 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 63 transitions, 686 flow [2021-03-26 13:51:13,435 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 63 transitions, 686 flow [2021-03-26 13:51:13,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 63 transitions, 686 flow [2021-03-26 13:51:13,441 INFO L129 PetriNetUnfolder]: 49/119 cut-off events. [2021-03-26 13:51:13,441 INFO L130 PetriNetUnfolder]: For 1189/1214 co-relation queries the response was YES. [2021-03-26 13:51:13,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 119 events. 49/119 cut-off events. For 1189/1214 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 479 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 705. Up to 62 conditions per place. [2021-03-26 13:51:13,442 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:13,443 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:13,443 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:51:13,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 13:51:13,444 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 686 flow [2021-03-26 13:51:13,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:13,444 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:13,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-26 13:51:13,658 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:13,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1070111773, now seen corresponding path program 1 times [2021-03-26 13:51:13,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:13,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133671137] [2021-03-26 13:51:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:13,668 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:13,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:13,678 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-03-26 13:51:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:13,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 65.4 percent of original size [2021-03-26 13:51:13,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:13,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:13,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:13,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133671137] [2021-03-26 13:51:13,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490175468] [2021-03-26 13:51:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:13,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:13,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:13,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:13,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:13,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:13,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:13,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:13,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,743 INFO L147 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size 39 [2021-03-26 13:51:13,743 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-03-26 13:51:13,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:51:13,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:51:13,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:51:13,757 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-03-26 13:51:13,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:13,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:13,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:13,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-26 13:51:13,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-26 13:51:13,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-26 13:51:13,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-26 13:51:13,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-26 13:51:13,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-26 13:51:13,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-26 13:51:13,780 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.4 percent of original size [2021-03-26 13:51:13,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 13:51:13,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:13,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:13,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:13,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:13,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:13,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:13,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:13,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:13,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:13,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:13,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:13,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:13,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444680296] [2021-03-26 13:51:13,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:13,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:13,801 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 58 [2021-03-26 13:51:13,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 686 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:13,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 58 [2021-03-26 13:51:13,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:13,976 INFO L129 PetriNetUnfolder]: 53/134 cut-off events. [2021-03-26 13:51:13,977 INFO L130 PetriNetUnfolder]: For 2364/2383 co-relation queries the response was YES. [2021-03-26 13:51:13,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 134 events. 53/134 cut-off events. For 2364/2383 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 560 event pairs, 1 based on Foata normal form. 21/155 useless extension candidates. Maximal degree in co-relation 981. Up to 102 conditions per place. [2021-03-26 13:51:13,978 INFO L132 encePairwiseOnDemand]: 33/58 looper letters, 30 selfloop transitions, 34 changer transitions 2/70 dead transitions. [2021-03-26 13:51:13,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 70 transitions, 1000 flow [2021-03-26 13:51:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2021-03-26 13:51:13,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.24482758620689654 [2021-03-26 13:51:13,978 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 142 transitions. [2021-03-26 13:51:13,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 142 transitions. [2021-03-26 13:51:13,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:13,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 142 transitions. [2021-03-26 13:51:13,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,979 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:13,979 INFO L185 Difference]: Start difference. First operand has 71 places, 63 transitions, 686 flow. Second operand 10 states and 142 transitions. [2021-03-26 13:51:13,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 70 transitions, 1000 flow [2021-03-26 13:51:13,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 875 flow, removed 32 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:13,985 INFO L241 Difference]: Finished difference. Result has 80 places, 66 transitions, 803 flow [2021-03-26 13:51:13,985 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=803, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2021-03-26 13:51:13,985 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 65 predicate places. [2021-03-26 13:51:13,985 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:13,985 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 66 transitions, 803 flow [2021-03-26 13:51:13,985 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 66 transitions, 803 flow [2021-03-26 13:51:13,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 66 transitions, 803 flow [2021-03-26 13:51:13,992 INFO L129 PetriNetUnfolder]: 52/127 cut-off events. [2021-03-26 13:51:13,992 INFO L130 PetriNetUnfolder]: For 2314/2340 co-relation queries the response was YES. [2021-03-26 13:51:13,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 127 events. 52/127 cut-off events. For 2314/2340 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 509 event pairs, 1 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 810. Up to 67 conditions per place. [2021-03-26 13:51:13,993 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:14,069 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:14,069 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:14,069 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-03-26 13:51:14,070 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 810 flow [2021-03-26 13:51:14,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,070 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:14,070 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:14,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:14,284 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:14,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1533483481, now seen corresponding path program 2 times [2021-03-26 13:51:14,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:14,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708321505] [2021-03-26 13:51:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:14,293 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:14,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:14,305 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-03-26 13:51:14,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:14,314 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-03-26 13:51:14,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:14,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:14,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:14,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708321505] [2021-03-26 13:51:14,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697149737] [2021-03-26 13:51:14,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:14,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-26 13:51:14,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-26 13:51:14,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:14,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:14,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,352 INFO L147 QuantifierPusher]: treesize reduction 2, result has 90.9 percent of original size 20 [2021-03-26 13:51:14,352 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.9 percent of original size [2021-03-26 13:51:14,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:14,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:14,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:14,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:14,380 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-26 13:51:14,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:14,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:14,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:14,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:14,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:14,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:14,394 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-03-26 13:51:14,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:14,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:14,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:14,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:14,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:51:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:14,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:14,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:14,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246073722] [2021-03-26 13:51:14,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:14,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:14,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:14,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:14,419 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2021-03-26 13:51:14,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 810 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:14,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2021-03-26 13:51:14,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:14,587 INFO L129 PetriNetUnfolder]: 54/129 cut-off events. [2021-03-26 13:51:14,587 INFO L130 PetriNetUnfolder]: For 2487/2487 co-relation queries the response was YES. [2021-03-26 13:51:14,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 129 events. 54/129 cut-off events. For 2487/2487 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 515 event pairs, 1 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 959. Up to 102 conditions per place. [2021-03-26 13:51:14,588 INFO L132 encePairwiseOnDemand]: 33/60 looper letters, 30 selfloop transitions, 34 changer transitions 1/69 dead transitions. [2021-03-26 13:51:14,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 69 transitions, 1041 flow [2021-03-26 13:51:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:51:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:51:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2021-03-26 13:51:14,589 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.24444444444444444 [2021-03-26 13:51:14,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 132 transitions. [2021-03-26 13:51:14,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 132 transitions. [2021-03-26 13:51:14,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:14,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 132 transitions. [2021-03-26 13:51:14,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,590 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,590 INFO L185 Difference]: Start difference. First operand has 77 places, 66 transitions, 810 flow. Second operand 9 states and 132 transitions. [2021-03-26 13:51:14,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 69 transitions, 1041 flow [2021-03-26 13:51:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 69 transitions, 774 flow, removed 114 selfloop flow, removed 6 redundant places. [2021-03-26 13:51:14,595 INFO L241 Difference]: Finished difference. Result has 82 places, 68 transitions, 718 flow [2021-03-26 13:51:14,596 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=718, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2021-03-26 13:51:14,596 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 67 predicate places. [2021-03-26 13:51:14,596 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:14,596 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 68 transitions, 718 flow [2021-03-26 13:51:14,607 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 68 transitions, 718 flow [2021-03-26 13:51:14,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 68 transitions, 718 flow [2021-03-26 13:51:14,614 INFO L129 PetriNetUnfolder]: 52/123 cut-off events. [2021-03-26 13:51:14,615 INFO L130 PetriNetUnfolder]: For 1510/1535 co-relation queries the response was YES. [2021-03-26 13:51:14,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 123 events. 52/123 cut-off events. For 1510/1535 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 488 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 748. Up to 65 conditions per place. [2021-03-26 13:51:14,616 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:14,655 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:14,655 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:14,655 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-03-26 13:51:14,655 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 722 flow [2021-03-26 13:51:14,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:14,655 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:14,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:14,856 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:14,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:14,856 INFO L82 PathProgramCache]: Analyzing trace with hash 314134346, now seen corresponding path program 1 times [2021-03-26 13:51:14,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:14,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486034133] [2021-03-26 13:51:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:14,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,868 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:14,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:14,892 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:14,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486034133] [2021-03-26 13:51:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512574480] [2021-03-26 13:51:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:14,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:14,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:14,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:14,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:14,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:14,943 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:14,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:14,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:14,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:14,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:14,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:14,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:14,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:14,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:14,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:14,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3005309] [2021-03-26 13:51:14,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:14,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:14,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:14,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:14,957 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2021-03-26 13:51:14,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 722 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:14,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:14,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2021-03-26 13:51:14,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:15,079 INFO L129 PetriNetUnfolder]: 55/133 cut-off events. [2021-03-26 13:51:15,080 INFO L130 PetriNetUnfolder]: For 2441/2444 co-relation queries the response was YES. [2021-03-26 13:51:15,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 133 events. 55/133 cut-off events. For 2441/2444 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 558 event pairs, 0 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 979. Up to 79 conditions per place. [2021-03-26 13:51:15,080 INFO L132 encePairwiseOnDemand]: 41/61 looper letters, 30 selfloop transitions, 34 changer transitions 2/72 dead transitions. [2021-03-26 13:51:15,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 72 transitions, 1020 flow [2021-03-26 13:51:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2021-03-26 13:51:15,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3114754098360656 [2021-03-26 13:51:15,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 114 transitions. [2021-03-26 13:51:15,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 114 transitions. [2021-03-26 13:51:15,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:15,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 114 transitions. [2021-03-26 13:51:15,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,082 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,082 INFO L185 Difference]: Start difference. First operand has 81 places, 68 transitions, 722 flow. Second operand 6 states and 114 transitions. [2021-03-26 13:51:15,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 72 transitions, 1020 flow [2021-03-26 13:51:15,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 929 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:15,088 INFO L241 Difference]: Finished difference. Result has 81 places, 70 transitions, 792 flow [2021-03-26 13:51:15,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2021-03-26 13:51:15,088 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 66 predicate places. [2021-03-26 13:51:15,089 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:15,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 70 transitions, 792 flow [2021-03-26 13:51:15,089 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 70 transitions, 792 flow [2021-03-26 13:51:15,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 70 transitions, 792 flow [2021-03-26 13:51:15,095 INFO L129 PetriNetUnfolder]: 54/127 cut-off events. [2021-03-26 13:51:15,095 INFO L130 PetriNetUnfolder]: For 1952/1955 co-relation queries the response was YES. [2021-03-26 13:51:15,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 127 events. 54/127 cut-off events. For 1952/1955 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 513 event pairs, 1 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 819. Up to 67 conditions per place. [2021-03-26 13:51:15,096 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:15,140 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:15,140 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:15,141 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-26 13:51:15,141 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 793 flow [2021-03-26 13:51:15,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:15,142 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:15,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:15,356 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:15,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1330308861, now seen corresponding path program 1 times [2021-03-26 13:51:15,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:15,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721378227] [2021-03-26 13:51:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:15,366 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:15,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:15,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:15,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:15,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:15,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:15,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721378227] [2021-03-26 13:51:15,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190949480] [2021-03-26 13:51:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:15,413 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-26 13:51:15,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:15,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:15,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,421 INFO L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-03-26 13:51:15,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:15,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:15,441 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-03-26 13:51:15,442 INFO L147 QuantifierPusher]: treesize reduction -1, result has 102.8 percent of original size 37 [2021-03-26 13:51:15,442 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.7 percent of original size [2021-03-26 13:51:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:15,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:15,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:51:15,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:15,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:51:15,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,457 INFO L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-03-26 13:51:15,458 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-26 13:51:15,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:15,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:15,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:15,472 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:15,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:51:15,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:15,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:15,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:15,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:15,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:15,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820056278] [2021-03-26 13:51:15,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:15,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:15,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2021-03-26 13:51:15,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 793 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:15,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2021-03-26 13:51:15,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:15,668 INFO L129 PetriNetUnfolder]: 56/138 cut-off events. [2021-03-26 13:51:15,668 INFO L130 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2021-03-26 13:51:15,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 138 events. 56/138 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 574 event pairs, 1 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 1066. Up to 114 conditions per place. [2021-03-26 13:51:15,669 INFO L132 encePairwiseOnDemand]: 35/62 looper letters, 39 selfloop transitions, 29 changer transitions 2/74 dead transitions. [2021-03-26 13:51:15,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 74 transitions, 1113 flow [2021-03-26 13:51:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:51:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:51:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2021-03-26 13:51:15,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23297491039426524 [2021-03-26 13:51:15,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 130 transitions. [2021-03-26 13:51:15,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 130 transitions. [2021-03-26 13:51:15,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:15,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 130 transitions. [2021-03-26 13:51:15,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,671 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,671 INFO L185 Difference]: Start difference. First operand has 80 places, 70 transitions, 793 flow. Second operand 9 states and 130 transitions. [2021-03-26 13:51:15,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 74 transitions, 1113 flow [2021-03-26 13:51:15,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 975 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:15,677 INFO L241 Difference]: Finished difference. Result has 88 places, 72 transitions, 815 flow [2021-03-26 13:51:15,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=815, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2021-03-26 13:51:15,678 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 73 predicate places. [2021-03-26 13:51:15,678 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:15,678 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 72 transitions, 815 flow [2021-03-26 13:51:15,678 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 72 transitions, 815 flow [2021-03-26 13:51:15,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 72 transitions, 815 flow [2021-03-26 13:51:15,685 INFO L129 PetriNetUnfolder]: 54/129 cut-off events. [2021-03-26 13:51:15,685 INFO L130 PetriNetUnfolder]: For 1913/1916 co-relation queries the response was YES. [2021-03-26 13:51:15,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 129 events. 54/129 cut-off events. For 1913/1916 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 525 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 804. Up to 68 conditions per place. [2021-03-26 13:51:15,686 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:15,775 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:15,775 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:15,775 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-03-26 13:51:15,776 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 765 flow [2021-03-26 13:51:15,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:15,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:15,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:15,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-03-26 13:51:15,987 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash 400021799, now seen corresponding path program 1 times [2021-03-26 13:51:15,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:15,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447047914] [2021-03-26 13:51:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:15,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:15,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,003 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:16,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:16,025 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:16,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:16,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447047914] [2021-03-26 13:51:16,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063228595] [2021-03-26 13:51:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:16,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:16,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:16,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:16,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:16,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:16,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:16,082 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:16,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:16,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:16,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:16,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:16,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:16,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:16,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008531586] [2021-03-26 13:51:16,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:16,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:16,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:16,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:16,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-26 13:51:16,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 765 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:16,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-26 13:51:16,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:16,238 INFO L129 PetriNetUnfolder]: 57/137 cut-off events. [2021-03-26 13:51:16,238 INFO L130 PetriNetUnfolder]: For 3106/3109 co-relation queries the response was YES. [2021-03-26 13:51:16,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 137 events. 57/137 cut-off events. For 3106/3109 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 578 event pairs, 0 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 1021. Up to 81 conditions per place. [2021-03-26 13:51:16,239 INFO L132 encePairwiseOnDemand]: 43/64 looper letters, 30 selfloop transitions, 36 changer transitions 2/74 dead transitions. [2021-03-26 13:51:16,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 74 transitions, 1081 flow [2021-03-26 13:51:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2021-03-26 13:51:16,240 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2021-03-26 13:51:16,240 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 116 transitions. [2021-03-26 13:51:16,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 116 transitions. [2021-03-26 13:51:16,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:16,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 116 transitions. [2021-03-26 13:51:16,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,241 INFO L185 Difference]: Start difference. First operand has 84 places, 70 transitions, 765 flow. Second operand 6 states and 116 transitions. [2021-03-26 13:51:16,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 74 transitions, 1081 flow [2021-03-26 13:51:16,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 74 transitions, 994 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:16,248 INFO L241 Difference]: Finished difference. Result has 84 places, 72 transitions, 853 flow [2021-03-26 13:51:16,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=853, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2021-03-26 13:51:16,248 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 69 predicate places. [2021-03-26 13:51:16,248 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:16,249 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 72 transitions, 853 flow [2021-03-26 13:51:16,249 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 72 transitions, 853 flow [2021-03-26 13:51:16,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 72 transitions, 853 flow [2021-03-26 13:51:16,256 INFO L129 PetriNetUnfolder]: 56/133 cut-off events. [2021-03-26 13:51:16,256 INFO L130 PetriNetUnfolder]: For 1425/1426 co-relation queries the response was YES. [2021-03-26 13:51:16,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 133 events. 56/133 cut-off events. For 1425/1426 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 541 event pairs, 1 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 910. Up to 70 conditions per place. [2021-03-26 13:51:16,257 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:16,293 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:16,293 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:16,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-26 13:51:16,294 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 855 flow [2021-03-26 13:51:16,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,294 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:16,294 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:16,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:16,508 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:16,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1502083767, now seen corresponding path program 1 times [2021-03-26 13:51:16,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:16,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599104291] [2021-03-26 13:51:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:16,519 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 13:51:16,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:16,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:16,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:16,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:16,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:16,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:16,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599104291] [2021-03-26 13:51:16,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845541221] [2021-03-26 13:51:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:16,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-26 13:51:16,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:16,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:16,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 13:51:16,584 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-03-26 13:51:16,585 INFO L147 QuantifierPusher]: treesize reduction 4, result has 88.9 percent of original size 32 [2021-03-26 13:51:16,585 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.2 percent of original size [2021-03-26 13:51:16,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:16,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:16,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:16,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,611 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size 44 [2021-03-26 13:51:16,611 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-26 13:51:16,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:51:16,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:51:16,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-26 13:51:16,630 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.8 percent of original size [2021-03-26 13:51:16,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-26 13:51:16,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:16,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:51:16,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:16,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,635 INFO L147 QuantifierPusher]: treesize reduction -4, result has 103.5 percent of original size 119 [2021-03-26 13:51:16,636 INFO L142 QuantifierPusher]: treesize reduction -4, result has 103.5 percent of original size [2021-03-26 13:51:16,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-26 13:51:16,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:16,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:16,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:16,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:16,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362541277] [2021-03-26 13:51:16,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:16,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:16,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:16,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:16,667 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 65 [2021-03-26 13:51:16,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 855 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:16,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 65 [2021-03-26 13:51:16,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:16,798 INFO L129 PetriNetUnfolder]: 58/138 cut-off events. [2021-03-26 13:51:16,798 INFO L130 PetriNetUnfolder]: For 2586/2586 co-relation queries the response was YES. [2021-03-26 13:51:16,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 138 events. 58/138 cut-off events. For 2586/2586 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 571 event pairs, 1 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 1092. Up to 118 conditions per place. [2021-03-26 13:51:16,799 INFO L132 encePairwiseOnDemand]: 37/65 looper letters, 40 selfloop transitions, 29 changer transitions 1/74 dead transitions. [2021-03-26 13:51:16,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 74 transitions, 1091 flow [2021-03-26 13:51:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:51:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:51:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2021-03-26 13:51:16,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23956043956043957 [2021-03-26 13:51:16,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 109 transitions. [2021-03-26 13:51:16,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 109 transitions. [2021-03-26 13:51:16,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:16,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 109 transitions. [2021-03-26 13:51:16,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,801 INFO L185 Difference]: Start difference. First operand has 83 places, 72 transitions, 855 flow. Second operand 7 states and 109 transitions. [2021-03-26 13:51:16,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 74 transitions, 1091 flow [2021-03-26 13:51:16,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 74 transitions, 943 flow, removed 39 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:16,808 INFO L241 Difference]: Finished difference. Result has 87 places, 73 transitions, 821 flow [2021-03-26 13:51:16,808 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=821, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2021-03-26 13:51:16,808 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 72 predicate places. [2021-03-26 13:51:16,808 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:16,808 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 73 transitions, 821 flow [2021-03-26 13:51:16,808 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 73 transitions, 821 flow [2021-03-26 13:51:16,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 73 transitions, 821 flow [2021-03-26 13:51:16,815 INFO L129 PetriNetUnfolder]: 56/132 cut-off events. [2021-03-26 13:51:16,815 INFO L130 PetriNetUnfolder]: For 2108/2113 co-relation queries the response was YES. [2021-03-26 13:51:16,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 132 events. 56/132 cut-off events. For 2108/2113 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 538 event pairs, 0 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 839. Up to 70 conditions per place. [2021-03-26 13:51:16,816 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:16,852 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:16,852 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:16,852 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-26 13:51:16,853 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 817 flow [2021-03-26 13:51:16,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:16,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:16,853 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:17,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-26 13:51:17,060 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:17,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:17,060 INFO L82 PathProgramCache]: Analyzing trace with hash 485995742, now seen corresponding path program 1 times [2021-03-26 13:51:17,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:17,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053822335] [2021-03-26 13:51:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,072 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:17,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:17,094 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:17,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:17,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053822335] [2021-03-26 13:51:17,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431722206] [2021-03-26 13:51:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:17,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:17,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:17,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,141 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:17,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:17,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:17,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:17,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:17,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:17,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:17,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:17,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:17,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283536714] [2021-03-26 13:51:17,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:17,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:17,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:17,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:17,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 66 [2021-03-26 13:51:17,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 817 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:17,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 66 [2021-03-26 13:51:17,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:17,288 INFO L129 PetriNetUnfolder]: 59/140 cut-off events. [2021-03-26 13:51:17,288 INFO L130 PetriNetUnfolder]: For 2766/2804 co-relation queries the response was YES. [2021-03-26 13:51:17,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 140 events. 59/140 cut-off events. For 2766/2804 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 585 event pairs, 1 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 1067. Up to 82 conditions per place. [2021-03-26 13:51:17,289 INFO L132 encePairwiseOnDemand]: 44/66 looper letters, 30 selfloop transitions, 38 changer transitions 2/76 dead transitions. [2021-03-26 13:51:17,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 1145 flow [2021-03-26 13:51:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2021-03-26 13:51:17,290 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29797979797979796 [2021-03-26 13:51:17,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 118 transitions. [2021-03-26 13:51:17,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 118 transitions. [2021-03-26 13:51:17,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:17,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 118 transitions. [2021-03-26 13:51:17,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,291 INFO L185 Difference]: Start difference. First operand has 85 places, 72 transitions, 817 flow. Second operand 6 states and 118 transitions. [2021-03-26 13:51:17,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 1145 flow [2021-03-26 13:51:17,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 76 transitions, 1031 flow, removed 29 selfloop flow, removed 6 redundant places. [2021-03-26 13:51:17,298 INFO L241 Difference]: Finished difference. Result has 86 places, 74 transitions, 886 flow [2021-03-26 13:51:17,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=886, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2021-03-26 13:51:17,298 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 71 predicate places. [2021-03-26 13:51:17,298 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:17,298 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 74 transitions, 886 flow [2021-03-26 13:51:17,298 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 74 transitions, 886 flow [2021-03-26 13:51:17,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 74 transitions, 886 flow [2021-03-26 13:51:17,305 INFO L129 PetriNetUnfolder]: 58/137 cut-off events. [2021-03-26 13:51:17,305 INFO L130 PetriNetUnfolder]: For 2808/2808 co-relation queries the response was YES. [2021-03-26 13:51:17,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 137 events. 58/137 cut-off events. For 2808/2808 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 560 event pairs, 1 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 949. Up to 73 conditions per place. [2021-03-26 13:51:17,306 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 13:51:17,341 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:17,341 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:17,341 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-26 13:51:17,341 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 888 flow [2021-03-26 13:51:17,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,342 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:17,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:17,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:17,548 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:17,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1658093127, now seen corresponding path program 1 times [2021-03-26 13:51:17,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:17,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826247078] [2021-03-26 13:51:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:17,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,571 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:17,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:17,594 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:17,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:17,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826247078] [2021-03-26 13:51:17,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457114680] [2021-03-26 13:51:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:17,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 13:51:17,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:17,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:17,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:17,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:17,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:17,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:17,668 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:17,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:17,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:17,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:17,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:17,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:17,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:17,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:17,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:17,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:17,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:17,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145710220] [2021-03-26 13:51:17,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:17,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:17,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:17,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:17,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 67 [2021-03-26 13:51:17,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:17,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 67 [2021-03-26 13:51:17,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:17,887 INFO L129 PetriNetUnfolder]: 61/143 cut-off events. [2021-03-26 13:51:17,887 INFO L130 PetriNetUnfolder]: For 2424/2490 co-relation queries the response was YES. [2021-03-26 13:51:17,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 143 events. 61/143 cut-off events. For 2424/2490 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 603 event pairs, 0 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 1169. Up to 113 conditions per place. [2021-03-26 13:51:17,888 INFO L132 encePairwiseOnDemand]: 37/67 looper letters, 34 selfloop transitions, 33 changer transitions 2/78 dead transitions. [2021-03-26 13:51:17,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 78 transitions, 1184 flow [2021-03-26 13:51:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:51:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:51:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2021-03-26 13:51:17,889 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2021-03-26 13:51:17,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2021-03-26 13:51:17,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2021-03-26 13:51:17,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:17,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2021-03-26 13:51:17,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,890 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,890 INFO L185 Difference]: Start difference. First operand has 85 places, 74 transitions, 888 flow. Second operand 7 states and 134 transitions. [2021-03-26 13:51:17,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 78 transitions, 1184 flow [2021-03-26 13:51:17,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 78 transitions, 1028 flow, removed 41 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:17,898 INFO L241 Difference]: Finished difference. Result has 89 places, 76 transitions, 905 flow [2021-03-26 13:51:17,898 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2021-03-26 13:51:17,898 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 74 predicate places. [2021-03-26 13:51:17,898 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:17,898 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 76 transitions, 905 flow [2021-03-26 13:51:17,898 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 76 transitions, 905 flow [2021-03-26 13:51:17,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 76 transitions, 905 flow [2021-03-26 13:51:17,906 INFO L129 PetriNetUnfolder]: 60/140 cut-off events. [2021-03-26 13:51:17,906 INFO L130 PetriNetUnfolder]: For 2131/2164 co-relation queries the response was YES. [2021-03-26 13:51:17,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 140 events. 60/140 cut-off events. For 2131/2164 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 590 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 975. Up to 75 conditions per place. [2021-03-26 13:51:17,907 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 13:51:17,943 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:17,943 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:17,943 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-26 13:51:17,944 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 911 flow [2021-03-26 13:51:17,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:17,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:17,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:18,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-26 13:51:18,144 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 543167554, now seen corresponding path program 1 times [2021-03-26 13:51:18,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:18,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076952747] [2021-03-26 13:51:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:18,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,162 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:18,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:18,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:18,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:18,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076952747] [2021-03-26 13:51:18,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382970891] [2021-03-26 13:51:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:18,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:18,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:18,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:18,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:18,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:18,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:18,232 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:18,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:18,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:18,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:18,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:18,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:18,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:18,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:18,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:18,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652574273] [2021-03-26 13:51:18,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:18,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:18,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:18,246 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 68 [2021-03-26 13:51:18,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 911 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:18,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 68 [2021-03-26 13:51:18,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:18,397 INFO L129 PetriNetUnfolder]: 62/148 cut-off events. [2021-03-26 13:51:18,397 INFO L130 PetriNetUnfolder]: For 2414/2419 co-relation queries the response was YES. [2021-03-26 13:51:18,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 148 events. 62/148 cut-off events. For 2414/2419 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 639 event pairs, 1 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 1224. Up to 88 conditions per place. [2021-03-26 13:51:18,398 INFO L132 encePairwiseOnDemand]: 44/68 looper letters, 31 selfloop transitions, 41 changer transitions 2/80 dead transitions. [2021-03-26 13:51:18,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 1257 flow [2021-03-26 13:51:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2021-03-26 13:51:18,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29411764705882354 [2021-03-26 13:51:18,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 120 transitions. [2021-03-26 13:51:18,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 120 transitions. [2021-03-26 13:51:18,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:18,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 120 transitions. [2021-03-26 13:51:18,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,400 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,400 INFO L185 Difference]: Start difference. First operand has 88 places, 76 transitions, 911 flow. Second operand 6 states and 120 transitions. [2021-03-26 13:51:18,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 1257 flow [2021-03-26 13:51:18,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 1152 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-26 13:51:18,409 INFO L241 Difference]: Finished difference. Result has 90 places, 78 transitions, 999 flow [2021-03-26 13:51:18,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=999, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2021-03-26 13:51:18,410 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 75 predicate places. [2021-03-26 13:51:18,410 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:18,410 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 78 transitions, 999 flow [2021-03-26 13:51:18,410 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 78 transitions, 999 flow [2021-03-26 13:51:18,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 78 transitions, 999 flow [2021-03-26 13:51:18,418 INFO L129 PetriNetUnfolder]: 62/144 cut-off events. [2021-03-26 13:51:18,418 INFO L130 PetriNetUnfolder]: For 2429/2435 co-relation queries the response was YES. [2021-03-26 13:51:18,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 144 events. 62/144 cut-off events. For 2429/2435 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 615 event pairs, 1 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 1076. Up to 76 conditions per place. [2021-03-26 13:51:18,419 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 13:51:18,458 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:18,458 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:18,458 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-26 13:51:18,459 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 1001 flow [2021-03-26 13:51:18,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,459 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:18,459 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:18,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-26 13:51:18,672 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash 547588199, now seen corresponding path program 1 times [2021-03-26 13:51:18,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:18,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496123477] [2021-03-26 13:51:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:18,678 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:18,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:18,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:18,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:18,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:18,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:18,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:18,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496123477] [2021-03-26 13:51:18,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490788377] [2021-03-26 13:51:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:18,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:18,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:18,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,733 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-03-26 13:51:18,734 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-03-26 13:51:18,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:18,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:18,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:18,746 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-03-26 13:51:18,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 13:51:18,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:18,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:18,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:18,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:18,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:18,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,762 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size 47 [2021-03-26 13:51:18,762 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:18,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:18,780 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-26 13:51:18,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:51:18,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:18,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:18,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-26 13:51:18,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-26 13:51:18,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-26 13:51:18,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-26 13:51:18,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-26 13:51:18,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-26 13:51:18,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:18,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-26 13:51:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:18,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:18,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:18,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142900047] [2021-03-26 13:51:18,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:18,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:18,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:18,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:18,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2021-03-26 13:51:18,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 1001 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:18,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2021-03-26 13:51:18,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:18,993 INFO L129 PetriNetUnfolder]: 64/153 cut-off events. [2021-03-26 13:51:18,993 INFO L130 PetriNetUnfolder]: For 2979/2979 co-relation queries the response was YES. [2021-03-26 13:51:18,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 153 events. 64/153 cut-off events. For 2979/2979 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 660 event pairs, 1 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 1317. Up to 130 conditions per place. [2021-03-26 13:51:18,994 INFO L132 encePairwiseOnDemand]: 43/69 looper letters, 49 selfloop transitions, 29 changer transitions 2/84 dead transitions. [2021-03-26 13:51:18,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 1379 flow [2021-03-26 13:51:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:51:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:51:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2021-03-26 13:51:18,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2222222222222222 [2021-03-26 13:51:18,995 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 138 transitions. [2021-03-26 13:51:18,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 138 transitions. [2021-03-26 13:51:18,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:18,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 138 transitions. [2021-03-26 13:51:18,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,996 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:18,996 INFO L185 Difference]: Start difference. First operand has 89 places, 78 transitions, 1001 flow. Second operand 9 states and 138 transitions. [2021-03-26 13:51:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 1379 flow [2021-03-26 13:51:19,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 84 transitions, 1211 flow, removed 44 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:19,007 INFO L241 Difference]: Finished difference. Result has 98 places, 82 transitions, 1101 flow [2021-03-26 13:51:19,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1101, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2021-03-26 13:51:19,007 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 83 predicate places. [2021-03-26 13:51:19,007 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:19,007 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 82 transitions, 1101 flow [2021-03-26 13:51:19,007 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 82 transitions, 1101 flow [2021-03-26 13:51:19,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 82 transitions, 1101 flow [2021-03-26 13:51:19,016 INFO L129 PetriNetUnfolder]: 62/146 cut-off events. [2021-03-26 13:51:19,016 INFO L130 PetriNetUnfolder]: For 2987/3026 co-relation queries the response was YES. [2021-03-26 13:51:19,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 146 events. 62/146 cut-off events. For 2987/3026 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 619 event pairs, 0 based on Foata normal form. 2/148 useless extension candidates. Maximal degree in co-relation 1091. Up to 77 conditions per place. [2021-03-26 13:51:19,017 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:19,133 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:19,133 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:19,133 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 126 [2021-03-26 13:51:19,134 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 1017 flow [2021-03-26 13:51:19,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,134 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:19,134 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:19,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-03-26 13:51:19,348 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:19,348 INFO L82 PathProgramCache]: Analyzing trace with hash 600512346, now seen corresponding path program 1 times [2021-03-26 13:51:19,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:19,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099653068] [2021-03-26 13:51:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:19,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,359 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:19,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:19,380 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:19,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:19,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099653068] [2021-03-26 13:51:19,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344351254] [2021-03-26 13:51:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:19,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:19,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:19,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:19,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:19,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:19,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:19,431 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:19,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:19,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:19,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:19,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:19,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:19,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:19,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:19,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:19,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:19,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346262545] [2021-03-26 13:51:19,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:19,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:19,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:19,445 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 72 [2021-03-26 13:51:19,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 1017 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:19,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 72 [2021-03-26 13:51:19,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:19,595 INFO L129 PetriNetUnfolder]: 65/153 cut-off events. [2021-03-26 13:51:19,596 INFO L130 PetriNetUnfolder]: For 4549/4554 co-relation queries the response was YES. [2021-03-26 13:51:19,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 153 events. 65/153 cut-off events. For 4549/4554 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 662 event pairs, 0 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 1338. Up to 91 conditions per place. [2021-03-26 13:51:19,597 INFO L132 encePairwiseOnDemand]: 46/72 looper letters, 32 selfloop transitions, 44 changer transitions 2/84 dead transitions. [2021-03-26 13:51:19,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 84 transitions, 1385 flow [2021-03-26 13:51:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2021-03-26 13:51:19,598 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2847222222222222 [2021-03-26 13:51:19,598 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 123 transitions. [2021-03-26 13:51:19,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 123 transitions. [2021-03-26 13:51:19,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:19,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 123 transitions. [2021-03-26 13:51:19,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,599 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,599 INFO L185 Difference]: Start difference. First operand has 94 places, 80 transitions, 1017 flow. Second operand 6 states and 123 transitions. [2021-03-26 13:51:19,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 84 transitions, 1385 flow [2021-03-26 13:51:19,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 84 transitions, 1196 flow, removed 92 selfloop flow, removed 5 redundant places. [2021-03-26 13:51:19,609 INFO L241 Difference]: Finished difference. Result has 96 places, 82 transitions, 1033 flow [2021-03-26 13:51:19,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1033, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2021-03-26 13:51:19,610 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 81 predicate places. [2021-03-26 13:51:19,610 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:19,610 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 82 transitions, 1033 flow [2021-03-26 13:51:19,610 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 82 transitions, 1033 flow [2021-03-26 13:51:19,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 82 transitions, 1033 flow [2021-03-26 13:51:19,618 INFO L129 PetriNetUnfolder]: 63/148 cut-off events. [2021-03-26 13:51:19,619 INFO L130 PetriNetUnfolder]: For 4205/4207 co-relation queries the response was YES. [2021-03-26 13:51:19,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 148 events. 63/148 cut-off events. For 4205/4207 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 624 event pairs, 1 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 1086. Up to 80 conditions per place. [2021-03-26 13:51:19,620 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:19,658 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:19,658 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:19,658 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-26 13:51:19,659 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 1035 flow [2021-03-26 13:51:19,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,659 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:19,659 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:19,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-03-26 13:51:19,873 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash 703860208, now seen corresponding path program 1 times [2021-03-26 13:51:19,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:19,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061383077] [2021-03-26 13:51:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:19,880 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 13:51:19,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:19,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:19,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:19,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:19,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:19,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061383077] [2021-03-26 13:51:19,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475408375] [2021-03-26 13:51:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:19,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-26 13:51:19,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:19,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:51:19,923 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-03-26 13:51:19,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:19,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:19,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:19,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:19,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:19,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:19,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,936 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.8 percent of original size 44 [2021-03-26 13:51:19,936 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.7 percent of original size [2021-03-26 13:51:19,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:19,953 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.3 percent of original size [2021-03-26 13:51:19,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:51:19,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:19,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:51:19,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:19,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,957 INFO L147 QuantifierPusher]: treesize reduction -6, result has 106.3 percent of original size 102 [2021-03-26 13:51:19,957 INFO L142 QuantifierPusher]: treesize reduction -6, result has 106.3 percent of original size [2021-03-26 13:51:19,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-03-26 13:51:19,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:19,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:19,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:19,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:19,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:19,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:19,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:19,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502462325] [2021-03-26 13:51:19,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:19,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:19,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:19,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 73 [2021-03-26 13:51:19,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 1035 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:19,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:19,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 73 [2021-03-26 13:51:19,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:20,159 INFO L129 PetriNetUnfolder]: 66/154 cut-off events. [2021-03-26 13:51:20,159 INFO L130 PetriNetUnfolder]: For 3971/4019 co-relation queries the response was YES. [2021-03-26 13:51:20,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 154 events. 66/154 cut-off events. For 3971/4019 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 665 event pairs, 1 based on Foata normal form. 48/202 useless extension candidates. Maximal degree in co-relation 1294. Up to 135 conditions per place. [2021-03-26 13:51:20,161 INFO L132 encePairwiseOnDemand]: 45/73 looper letters, 52 selfloop transitions, 27 changer transitions 1/84 dead transitions. [2021-03-26 13:51:20,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 84 transitions, 1263 flow [2021-03-26 13:51:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2021-03-26 13:51:20,161 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2374429223744292 [2021-03-26 13:51:20,161 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 104 transitions. [2021-03-26 13:51:20,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 104 transitions. [2021-03-26 13:51:20,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:20,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 104 transitions. [2021-03-26 13:51:20,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,162 INFO L185 Difference]: Start difference. First operand has 95 places, 82 transitions, 1035 flow. Second operand 6 states and 104 transitions. [2021-03-26 13:51:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 84 transitions, 1263 flow [2021-03-26 13:51:20,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 84 transitions, 1085 flow, removed 46 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:20,173 INFO L241 Difference]: Finished difference. Result has 98 places, 83 transitions, 973 flow [2021-03-26 13:51:20,173 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2021-03-26 13:51:20,174 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 83 predicate places. [2021-03-26 13:51:20,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:20,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 83 transitions, 973 flow [2021-03-26 13:51:20,174 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 83 transitions, 973 flow [2021-03-26 13:51:20,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 83 transitions, 973 flow [2021-03-26 13:51:20,182 INFO L129 PetriNetUnfolder]: 64/149 cut-off events. [2021-03-26 13:51:20,182 INFO L130 PetriNetUnfolder]: For 3607/3616 co-relation queries the response was YES. [2021-03-26 13:51:20,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 149 events. 64/149 cut-off events. For 3607/3616 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 629 event pairs, 0 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 1035. Up to 79 conditions per place. [2021-03-26 13:51:20,183 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-26 13:51:20,220 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:51:20,220 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:20,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-26 13:51:20,220 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 965 flow [2021-03-26 13:51:20,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,220 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:20,220 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:20,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:20,432 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash 715028950, now seen corresponding path program 1 times [2021-03-26 13:51:20,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:20,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003398761] [2021-03-26 13:51:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:20,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,444 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:20,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:20,469 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:20,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:20,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003398761] [2021-03-26 13:51:20,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862263771] [2021-03-26 13:51:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:20,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:20,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:20,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:20,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:20,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:20,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:20,529 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:20,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:20,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:20,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:20,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:20,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:20,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:20,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247869451] [2021-03-26 13:51:20,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:20,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:20,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 74 [2021-03-26 13:51:20,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 965 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:20,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 74 [2021-03-26 13:51:20,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:20,714 INFO L129 PetriNetUnfolder]: 67/157 cut-off events. [2021-03-26 13:51:20,714 INFO L130 PetriNetUnfolder]: For 5340/5374 co-relation queries the response was YES. [2021-03-26 13:51:20,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 157 events. 67/157 cut-off events. For 5340/5374 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 688 event pairs, 0 based on Foata normal form. 28/185 useless extension candidates. Maximal degree in co-relation 1327. Up to 93 conditions per place. [2021-03-26 13:51:20,715 INFO L132 encePairwiseOnDemand]: 47/74 looper letters, 32 selfloop transitions, 46 changer transitions 2/86 dead transitions. [2021-03-26 13:51:20,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 1349 flow [2021-03-26 13:51:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2021-03-26 13:51:20,716 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27927927927927926 [2021-03-26 13:51:20,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2021-03-26 13:51:20,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2021-03-26 13:51:20,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:20,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2021-03-26 13:51:20,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,717 INFO L185 Difference]: Start difference. First operand has 96 places, 82 transitions, 965 flow. Second operand 6 states and 124 transitions. [2021-03-26 13:51:20,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 1349 flow [2021-03-26 13:51:20,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 1212 flow, removed 30 selfloop flow, removed 6 redundant places. [2021-03-26 13:51:20,732 INFO L241 Difference]: Finished difference. Result has 97 places, 84 transitions, 1045 flow [2021-03-26 13:51:20,733 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1045, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2021-03-26 13:51:20,733 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 82 predicate places. [2021-03-26 13:51:20,733 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:20,733 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 84 transitions, 1045 flow [2021-03-26 13:51:20,733 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 84 transitions, 1045 flow [2021-03-26 13:51:20,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 84 transitions, 1045 flow [2021-03-26 13:51:20,741 INFO L129 PetriNetUnfolder]: 65/152 cut-off events. [2021-03-26 13:51:20,742 INFO L130 PetriNetUnfolder]: For 4467/4475 co-relation queries the response was YES. [2021-03-26 13:51:20,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 152 events. 65/152 cut-off events. For 4467/4475 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 654 event pairs, 1 based on Foata normal form. 2/154 useless extension candidates. Maximal degree in co-relation 1127. Up to 83 conditions per place. [2021-03-26 13:51:20,742 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:20,782 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:20,782 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:20,782 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-26 13:51:20,782 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 1046 flow [2021-03-26 13:51:20,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:20,782 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:20,782 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:20,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-03-26 13:51:20,984 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:20,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:20,984 INFO L82 PathProgramCache]: Analyzing trace with hash 705793740, now seen corresponding path program 1 times [2021-03-26 13:51:20,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:20,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405218461] [2021-03-26 13:51:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:20,989 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:20,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:20,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:20,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:21,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:21,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:21,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:21,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:21,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405218461] [2021-03-26 13:51:21,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972336550] [2021-03-26 13:51:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:21,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:21,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:21,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,041 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:21,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:21,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:21,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:21,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:21,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:21,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:21,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,053 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-03-26 13:51:21,054 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-03-26 13:51:21,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:21,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:21,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:21,068 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:21,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:21,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:21,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-26 13:51:21,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:21,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:21,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:21,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597504837] [2021-03-26 13:51:21,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:21,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:21,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:21,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:21,092 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2021-03-26 13:51:21,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 1046 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:21,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2021-03-26 13:51:21,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:21,265 INFO L129 PetriNetUnfolder]: 68/161 cut-off events. [2021-03-26 13:51:21,265 INFO L130 PetriNetUnfolder]: For 4103/4103 co-relation queries the response was YES. [2021-03-26 13:51:21,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 161 events. 68/161 cut-off events. For 4103/4103 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 716 event pairs, 1 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 1379. Up to 139 conditions per place. [2021-03-26 13:51:21,266 INFO L132 encePairwiseOnDemand]: 46/75 looper letters, 53 selfloop transitions, 29 changer transitions 2/88 dead transitions. [2021-03-26 13:51:21,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 88 transitions, 1354 flow [2021-03-26 13:51:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2021-03-26 13:51:21,267 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.21333333333333335 [2021-03-26 13:51:21,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 128 transitions. [2021-03-26 13:51:21,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 128 transitions. [2021-03-26 13:51:21,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:21,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 128 transitions. [2021-03-26 13:51:21,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,268 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,268 INFO L185 Difference]: Start difference. First operand has 96 places, 84 transitions, 1046 flow. Second operand 8 states and 128 transitions. [2021-03-26 13:51:21,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 88 transitions, 1354 flow [2021-03-26 13:51:21,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 88 transitions, 1194 flow, removed 48 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:21,279 INFO L241 Difference]: Finished difference. Result has 104 places, 86 transitions, 1070 flow [2021-03-26 13:51:21,279 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1070, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2021-03-26 13:51:21,279 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 89 predicate places. [2021-03-26 13:51:21,279 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:21,279 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 86 transitions, 1070 flow [2021-03-26 13:51:21,279 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 86 transitions, 1070 flow [2021-03-26 13:51:21,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 86 transitions, 1070 flow [2021-03-26 13:51:21,288 INFO L129 PetriNetUnfolder]: 66/154 cut-off events. [2021-03-26 13:51:21,288 INFO L130 PetriNetUnfolder]: For 4039/4052 co-relation queries the response was YES. [2021-03-26 13:51:21,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 154 events. 66/154 cut-off events. For 4039/4052 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 668 event pairs, 0 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 1128. Up to 83 conditions per place. [2021-03-26 13:51:21,289 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:21,370 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:21,370 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:21,370 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 91 [2021-03-26 13:51:21,371 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 1004 flow [2021-03-26 13:51:21,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:21,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:21,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:21,580 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 772287252, now seen corresponding path program 1 times [2021-03-26 13:51:21,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:21,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783067404] [2021-03-26 13:51:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:21,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,594 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:21,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:21,617 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:21,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:21,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783067404] [2021-03-26 13:51:21,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583912346] [2021-03-26 13:51:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:21,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:21,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:21,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:21,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:21,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:21,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:21,672 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:21,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:21,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:21,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:21,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:21,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:21,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:21,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:21,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:21,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:21,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:21,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635771309] [2021-03-26 13:51:21,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:21,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:21,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:21,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:21,691 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 77 [2021-03-26 13:51:21,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 1004 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:21,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 77 [2021-03-26 13:51:21,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:21,857 INFO L129 PetriNetUnfolder]: 69/161 cut-off events. [2021-03-26 13:51:21,857 INFO L130 PetriNetUnfolder]: For 5720/5788 co-relation queries the response was YES. [2021-03-26 13:51:21,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 161 events. 69/161 cut-off events. For 5720/5788 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 710 event pairs, 0 based on Foata normal form. 24/185 useless extension candidates. Maximal degree in co-relation 1373. Up to 94 conditions per place. [2021-03-26 13:51:21,858 INFO L132 encePairwiseOnDemand]: 49/77 looper letters, 32 selfloop transitions, 48 changer transitions 2/88 dead transitions. [2021-03-26 13:51:21,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 88 transitions, 1400 flow [2021-03-26 13:51:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2021-03-26 13:51:21,859 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27056277056277056 [2021-03-26 13:51:21,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 125 transitions. [2021-03-26 13:51:21,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 125 transitions. [2021-03-26 13:51:21,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:21,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 125 transitions. [2021-03-26 13:51:21,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,860 INFO L185 Difference]: Start difference. First operand has 100 places, 84 transitions, 1004 flow. Second operand 6 states and 125 transitions. [2021-03-26 13:51:21,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 88 transitions, 1400 flow [2021-03-26 13:51:21,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 88 transitions, 1252 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:21,873 INFO L241 Difference]: Finished difference. Result has 99 places, 86 transitions, 1081 flow [2021-03-26 13:51:21,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1081, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2021-03-26 13:51:21,873 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 84 predicate places. [2021-03-26 13:51:21,873 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:21,873 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 86 transitions, 1081 flow [2021-03-26 13:51:21,873 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 86 transitions, 1081 flow [2021-03-26 13:51:21,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 86 transitions, 1081 flow [2021-03-26 13:51:21,883 INFO L129 PetriNetUnfolder]: 67/156 cut-off events. [2021-03-26 13:51:21,883 INFO L130 PetriNetUnfolder]: For 4723/4725 co-relation queries the response was YES. [2021-03-26 13:51:21,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 156 events. 67/156 cut-off events. For 4723/4725 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 687 event pairs, 1 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 1169. Up to 86 conditions per place. [2021-03-26 13:51:21,884 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:21,923 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:21,923 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:21,923 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-26 13:51:21,923 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 1082 flow [2021-03-26 13:51:21,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:21,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:21,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:22,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:22,138 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:22,138 INFO L82 PathProgramCache]: Analyzing trace with hash 708564303, now seen corresponding path program 1 times [2021-03-26 13:51:22,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:22,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034912322] [2021-03-26 13:51:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:22,146 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:22,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:22,157 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:22,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:22,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:22,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:22,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034912322] [2021-03-26 13:51:22,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447210561] [2021-03-26 13:51:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:22,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:22,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:22,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,202 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:22,202 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-03-26 13:51:22,202 INFO L142 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-03-26 13:51:22,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:22,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:22,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:22,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:22,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:22,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,217 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.3 percent of original size 49 [2021-03-26 13:51:22,217 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.2 percent of original size [2021-03-26 13:51:22,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:22,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:22,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:22,233 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:22,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:22,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:22,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:22,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:22,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948631012] [2021-03-26 13:51:22,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:22,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:22,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:22,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 78 [2021-03-26 13:51:22,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 1082 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:22,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:22,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 78 [2021-03-26 13:51:22,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:22,475 INFO L129 PetriNetUnfolder]: 70/165 cut-off events. [2021-03-26 13:51:22,475 INFO L130 PetriNetUnfolder]: For 4388/4388 co-relation queries the response was YES. [2021-03-26 13:51:22,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 165 events. 70/165 cut-off events. For 4388/4388 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 746 event pairs, 1 based on Foata normal form. 2/167 useless extension candidates. Maximal degree in co-relation 1428. Up to 143 conditions per place. [2021-03-26 13:51:22,477 INFO L132 encePairwiseOnDemand]: 48/78 looper letters, 54 selfloop transitions, 30 changer transitions 2/90 dead transitions. [2021-03-26 13:51:22,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 90 transitions, 1398 flow [2021-03-26 13:51:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2021-03-26 13:51:22,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.20673076923076922 [2021-03-26 13:51:22,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 129 transitions. [2021-03-26 13:51:22,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 129 transitions. [2021-03-26 13:51:22,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:22,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 129 transitions. [2021-03-26 13:51:22,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:22,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:22,479 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:22,479 INFO L185 Difference]: Start difference. First operand has 98 places, 86 transitions, 1082 flow. Second operand 8 states and 129 transitions. [2021-03-26 13:51:22,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 90 transitions, 1398 flow [2021-03-26 13:51:22,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 90 transitions, 1204 flow, removed 50 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:22,488 INFO L241 Difference]: Finished difference. Result has 105 places, 88 transitions, 1078 flow [2021-03-26 13:51:22,488 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1078, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2021-03-26 13:51:22,488 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 90 predicate places. [2021-03-26 13:51:22,488 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:22,488 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 88 transitions, 1078 flow [2021-03-26 13:51:22,488 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 88 transitions, 1078 flow [2021-03-26 13:51:22,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 88 transitions, 1078 flow [2021-03-26 13:51:22,498 INFO L129 PetriNetUnfolder]: 68/158 cut-off events. [2021-03-26 13:51:22,498 INFO L130 PetriNetUnfolder]: For 4335/4377 co-relation queries the response was YES. [2021-03-26 13:51:22,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 158 events. 68/158 cut-off events. For 4335/4377 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 692 event pairs, 0 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 1168. Up to 87 conditions per place. [2021-03-26 13:51:22,499 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:22,580 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:22,581 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:22,581 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 93 [2021-03-26 13:51:22,581 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 1010 flow [2021-03-26 13:51:22,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:22,581 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:22,581 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:22,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-03-26 13:51:22,795 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:22,796 INFO L82 PathProgramCache]: Analyzing trace with hash 858174705, now seen corresponding path program 1 times [2021-03-26 13:51:22,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:22,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28326661] [2021-03-26 13:51:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:22,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,806 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:22,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:22,827 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:22,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:22,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28326661] [2021-03-26 13:51:22,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031994868] [2021-03-26 13:51:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:22,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:22,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:22,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:22,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:22,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:22,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:22,879 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:22,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:22,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:22,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:22,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:22,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:22,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:22,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:22,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:22,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:22,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:22,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520873986] [2021-03-26 13:51:22,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:22,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:22,894 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 80 [2021-03-26 13:51:22,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 1010 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:22,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:22,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 80 [2021-03-26 13:51:22,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:23,047 INFO L129 PetriNetUnfolder]: 71/165 cut-off events. [2021-03-26 13:51:23,047 INFO L130 PetriNetUnfolder]: For 6171/6176 co-relation queries the response was YES. [2021-03-26 13:51:23,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 165 events. 71/165 cut-off events. For 6171/6176 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 741 event pairs, 0 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 1450. Up to 97 conditions per place. [2021-03-26 13:51:23,049 INFO L132 encePairwiseOnDemand]: 51/80 looper letters, 32 selfloop transitions, 50 changer transitions 2/90 dead transitions. [2021-03-26 13:51:23,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 1418 flow [2021-03-26 13:51:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2021-03-26 13:51:23,049 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2625 [2021-03-26 13:51:23,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 126 transitions. [2021-03-26 13:51:23,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 126 transitions. [2021-03-26 13:51:23,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:23,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 126 transitions. [2021-03-26 13:51:23,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,050 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,050 INFO L185 Difference]: Start difference. First operand has 101 places, 86 transitions, 1010 flow. Second operand 6 states and 126 transitions. [2021-03-26 13:51:23,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 90 transitions, 1418 flow [2021-03-26 13:51:23,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 1292 flow, removed 35 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:23,062 INFO L241 Difference]: Finished difference. Result has 101 places, 88 transitions, 1117 flow [2021-03-26 13:51:23,062 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1117, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2021-03-26 13:51:23,063 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 86 predicate places. [2021-03-26 13:51:23,063 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:23,063 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 88 transitions, 1117 flow [2021-03-26 13:51:23,063 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 88 transitions, 1117 flow [2021-03-26 13:51:23,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 88 transitions, 1117 flow [2021-03-26 13:51:23,072 INFO L129 PetriNetUnfolder]: 69/160 cut-off events. [2021-03-26 13:51:23,072 INFO L130 PetriNetUnfolder]: For 5016/5020 co-relation queries the response was YES. [2021-03-26 13:51:23,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 160 events. 69/160 cut-off events. For 5016/5020 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 717 event pairs, 1 based on Foata normal form. 2/162 useless extension candidates. Maximal degree in co-relation 1211. Up to 90 conditions per place. [2021-03-26 13:51:23,073 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:23,109 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:23,109 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:23,110 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 47 [2021-03-26 13:51:23,110 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 1118 flow [2021-03-26 13:51:23,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:23,110 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:23,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-03-26 13:51:23,323 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 711334866, now seen corresponding path program 1 times [2021-03-26 13:51:23,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:23,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407058635] [2021-03-26 13:51:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:23,329 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:23,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:23,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:23,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:23,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:23,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:23,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407058635] [2021-03-26 13:51:23,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492059162] [2021-03-26 13:51:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:23,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:23,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,388 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:23,388 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.3 percent of original size 41 [2021-03-26 13:51:23,389 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-03-26 13:51:23,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:23,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:23,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:23,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:23,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:23,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,402 INFO L147 QuantifierPusher]: treesize reduction -1, result has 102.0 percent of original size 51 [2021-03-26 13:51:23,402 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.0 percent of original size [2021-03-26 13:51:23,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-26 13:51:23,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-26 13:51:23,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-26 13:51:23,419 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:23,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:51:23,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:23,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:23,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-26 13:51:23,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:23,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:23,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:23,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:23,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344097239] [2021-03-26 13:51:23,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:23,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:23,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:23,448 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 81 [2021-03-26 13:51:23,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:23,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 81 [2021-03-26 13:51:23,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:23,683 INFO L129 PetriNetUnfolder]: 72/169 cut-off events. [2021-03-26 13:51:23,683 INFO L130 PetriNetUnfolder]: For 4683/4683 co-relation queries the response was YES. [2021-03-26 13:51:23,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 169 events. 72/169 cut-off events. For 4683/4683 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 775 event pairs, 1 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 1477. Up to 147 conditions per place. [2021-03-26 13:51:23,685 INFO L132 encePairwiseOnDemand]: 50/81 looper letters, 55 selfloop transitions, 31 changer transitions 2/92 dead transitions. [2021-03-26 13:51:23,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 92 transitions, 1442 flow [2021-03-26 13:51:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2021-03-26 13:51:23,685 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2006172839506173 [2021-03-26 13:51:23,685 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 130 transitions. [2021-03-26 13:51:23,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 130 transitions. [2021-03-26 13:51:23,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:23,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 130 transitions. [2021-03-26 13:51:23,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,686 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,686 INFO L185 Difference]: Start difference. First operand has 100 places, 88 transitions, 1118 flow. Second operand 8 states and 130 transitions. [2021-03-26 13:51:23,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 92 transitions, 1442 flow [2021-03-26 13:51:23,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 92 transitions, 1240 flow, removed 52 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:23,698 INFO L241 Difference]: Finished difference. Result has 107 places, 90 transitions, 1112 flow [2021-03-26 13:51:23,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1112, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2021-03-26 13:51:23,698 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 92 predicate places. [2021-03-26 13:51:23,699 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:23,699 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 90 transitions, 1112 flow [2021-03-26 13:51:23,699 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 90 transitions, 1112 flow [2021-03-26 13:51:23,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 90 transitions, 1112 flow [2021-03-26 13:51:23,709 INFO L129 PetriNetUnfolder]: 70/162 cut-off events. [2021-03-26 13:51:23,709 INFO L130 PetriNetUnfolder]: For 4647/4696 co-relation queries the response was YES. [2021-03-26 13:51:23,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 162 events. 70/162 cut-off events. For 4647/4696 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 717 event pairs, 0 based on Foata normal form. 2/164 useless extension candidates. Maximal degree in co-relation 1209. Up to 91 conditions per place. [2021-03-26 13:51:23,710 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:23,787 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:23,787 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:23,787 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 88 [2021-03-26 13:51:23,788 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 1042 flow [2021-03-26 13:51:23,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:23,788 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:23,788 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:23,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-03-26 13:51:24,000 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:24,000 INFO L82 PathProgramCache]: Analyzing trace with hash 944062158, now seen corresponding path program 1 times [2021-03-26 13:51:24,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:24,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918437572] [2021-03-26 13:51:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:24,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,011 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:24,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:24,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:24,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:24,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918437572] [2021-03-26 13:51:24,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412763158] [2021-03-26 13:51:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:24,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:24,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:24,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:24,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:24,084 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:24,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:24,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:24,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:24,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:24,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:24,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:24,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:24,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:24,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18566965] [2021-03-26 13:51:24,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:24,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:24,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:24,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:24,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 83 [2021-03-26 13:51:24,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 1042 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:24,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 83 [2021-03-26 13:51:24,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:24,263 INFO L129 PetriNetUnfolder]: 72/168 cut-off events. [2021-03-26 13:51:24,263 INFO L130 PetriNetUnfolder]: For 5565/5596 co-relation queries the response was YES. [2021-03-26 13:51:24,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 168 events. 72/168 cut-off events. For 5565/5596 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 765 event pairs, 0 based on Foata normal form. 27/195 useless extension candidates. Maximal degree in co-relation 1467. Up to 98 conditions per place. [2021-03-26 13:51:24,264 INFO L132 encePairwiseOnDemand]: 53/83 looper letters, 32 selfloop transitions, 52 changer transitions 2/92 dead transitions. [2021-03-26 13:51:24,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 92 transitions, 1462 flow [2021-03-26 13:51:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2021-03-26 13:51:24,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.25502008032128515 [2021-03-26 13:51:24,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 127 transitions. [2021-03-26 13:51:24,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 127 transitions. [2021-03-26 13:51:24,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:24,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 127 transitions. [2021-03-26 13:51:24,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,266 INFO L185 Difference]: Start difference. First operand has 103 places, 88 transitions, 1042 flow. Second operand 6 states and 127 transitions. [2021-03-26 13:51:24,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 92 transitions, 1462 flow [2021-03-26 13:51:24,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 92 transitions, 1332 flow, removed 36 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:24,282 INFO L241 Difference]: Finished difference. Result has 103 places, 90 transitions, 1153 flow [2021-03-26 13:51:24,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1153, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2021-03-26 13:51:24,282 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 88 predicate places. [2021-03-26 13:51:24,282 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:24,282 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 90 transitions, 1153 flow [2021-03-26 13:51:24,282 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 90 transitions, 1153 flow [2021-03-26 13:51:24,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 90 transitions, 1153 flow [2021-03-26 13:51:24,292 INFO L129 PetriNetUnfolder]: 71/164 cut-off events. [2021-03-26 13:51:24,292 INFO L130 PetriNetUnfolder]: For 5499/5507 co-relation queries the response was YES. [2021-03-26 13:51:24,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 164 events. 71/164 cut-off events. For 5499/5507 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 735 event pairs, 1 based on Foata normal form. 2/166 useless extension candidates. Maximal degree in co-relation 1253. Up to 94 conditions per place. [2021-03-26 13:51:24,293 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:24,330 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:24,330 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:24,331 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-26 13:51:24,331 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 1154 flow [2021-03-26 13:51:24,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:24,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:24,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:24,531 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash 714018939, now seen corresponding path program 1 times [2021-03-26 13:51:24,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:24,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710838628] [2021-03-26 13:51:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:24,541 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:24,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:24,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:24,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:24,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:24,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:24,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710838628] [2021-03-26 13:51:24,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295645556] [2021-03-26 13:51:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:24,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:24,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:24,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:24,586 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:24,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:24,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:24,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:24,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:24,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:24,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:24,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,598 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-03-26 13:51:24,599 INFO L142 QuantifierPusher]: treesize reduction 2, result has 94.4 percent of original size [2021-03-26 13:51:24,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:24,618 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:24,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:24,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:24,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:24,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:24,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:24,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85603897] [2021-03-26 13:51:24,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:24,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:24,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:24,642 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 84 [2021-03-26 13:51:24,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 1154 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:24,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 84 [2021-03-26 13:51:24,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:24,877 INFO L129 PetriNetUnfolder]: 74/176 cut-off events. [2021-03-26 13:51:24,877 INFO L130 PetriNetUnfolder]: For 4990/4990 co-relation queries the response was YES. [2021-03-26 13:51:24,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 176 events. 74/176 cut-off events. For 4990/4990 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 820 event pairs, 1 based on Foata normal form. 3/179 useless extension candidates. Maximal degree in co-relation 1567. Up to 151 conditions per place. [2021-03-26 13:51:24,878 INFO L132 encePairwiseOnDemand]: 52/84 looper letters, 56 selfloop transitions, 33 changer transitions 3/96 dead transitions. [2021-03-26 13:51:24,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 96 transitions, 1566 flow [2021-03-26 13:51:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2021-03-26 13:51:24,879 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.18333333333333332 [2021-03-26 13:51:24,879 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 154 transitions. [2021-03-26 13:51:24,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 154 transitions. [2021-03-26 13:51:24,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:24,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 154 transitions. [2021-03-26 13:51:24,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,880 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:24,880 INFO L185 Difference]: Start difference. First operand has 102 places, 90 transitions, 1154 flow. Second operand 10 states and 154 transitions. [2021-03-26 13:51:24,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 96 transitions, 1566 flow [2021-03-26 13:51:24,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 1385 flow, removed 54 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:24,896 INFO L241 Difference]: Finished difference. Result has 114 places, 93 transitions, 1245 flow [2021-03-26 13:51:24,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1245, PETRI_PLACES=114, PETRI_TRANSITIONS=93} [2021-03-26 13:51:24,896 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 99 predicate places. [2021-03-26 13:51:24,897 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:24,897 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 93 transitions, 1245 flow [2021-03-26 13:51:24,897 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 93 transitions, 1245 flow [2021-03-26 13:51:24,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 93 transitions, 1245 flow [2021-03-26 13:51:24,907 INFO L129 PetriNetUnfolder]: 72/167 cut-off events. [2021-03-26 13:51:24,907 INFO L130 PetriNetUnfolder]: For 5061/5071 co-relation queries the response was YES. [2021-03-26 13:51:24,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 167 events. 72/167 cut-off events. For 5061/5071 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 748 event pairs, 0 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 1311. Up to 96 conditions per place. [2021-03-26 13:51:24,908 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:25,016 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:25,016 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:25,017 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 120 [2021-03-26 13:51:25,017 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 1109 flow [2021-03-26 13:51:25,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,017 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:25,017 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:25,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-26 13:51:25,228 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1029949611, now seen corresponding path program 1 times [2021-03-26 13:51:25,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:25,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323233744] [2021-03-26 13:51:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:25,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,240 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:25,265 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:25,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:25,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323233744] [2021-03-26 13:51:25,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347144161] [2021-03-26 13:51:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:25,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:25,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:25,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:25,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:25,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:25,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:25,323 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:25,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:25,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:25,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:25,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:25,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:25,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:25,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:25,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492181372] [2021-03-26 13:51:25,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:25,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:25,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:25,337 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 87 [2021-03-26 13:51:25,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 1109 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:25,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 87 [2021-03-26 13:51:25,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:25,502 INFO L129 PetriNetUnfolder]: 75/173 cut-off events. [2021-03-26 13:51:25,502 INFO L130 PetriNetUnfolder]: For 7373/7378 co-relation queries the response was YES. [2021-03-26 13:51:25,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 173 events. 75/173 cut-off events. For 7373/7378 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 792 event pairs, 0 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 1579. Up to 101 conditions per place. [2021-03-26 13:51:25,503 INFO L132 encePairwiseOnDemand]: 56/87 looper letters, 32 selfloop transitions, 54 changer transitions 2/94 dead transitions. [2021-03-26 13:51:25,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 94 transitions, 1541 flow [2021-03-26 13:51:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2021-03-26 13:51:25,504 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.24521072796934865 [2021-03-26 13:51:25,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 128 transitions. [2021-03-26 13:51:25,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 128 transitions. [2021-03-26 13:51:25,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:25,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 128 transitions. [2021-03-26 13:51:25,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,505 INFO L185 Difference]: Start difference. First operand has 108 places, 90 transitions, 1109 flow. Second operand 6 states and 128 transitions. [2021-03-26 13:51:25,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 94 transitions, 1541 flow [2021-03-26 13:51:25,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 1372 flow, removed 40 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:25,524 INFO L241 Difference]: Finished difference. Result has 105 places, 92 transitions, 1189 flow [2021-03-26 13:51:25,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1189, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2021-03-26 13:51:25,524 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 90 predicate places. [2021-03-26 13:51:25,524 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:25,524 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 92 transitions, 1189 flow [2021-03-26 13:51:25,524 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 92 transitions, 1189 flow [2021-03-26 13:51:25,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 92 transitions, 1189 flow [2021-03-26 13:51:25,535 INFO L129 PetriNetUnfolder]: 74/169 cut-off events. [2021-03-26 13:51:25,535 INFO L130 PetriNetUnfolder]: For 6106/6157 co-relation queries the response was YES. [2021-03-26 13:51:25,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 169 events. 74/169 cut-off events. For 6106/6157 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 751 event pairs, 0 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 1296. Up to 98 conditions per place. [2021-03-26 13:51:25,536 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:25,576 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:25,576 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:25,576 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-26 13:51:25,576 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 1190 flow [2021-03-26 13:51:25,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:25,576 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:25,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-26 13:51:25,777 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:25,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:25,777 INFO L82 PathProgramCache]: Analyzing trace with hash 656045653, now seen corresponding path program 1 times [2021-03-26 13:51:25,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:25,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334621312] [2021-03-26 13:51:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:25,783 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:25,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:25,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:25,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:25,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:25,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:25,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334621312] [2021-03-26 13:51:25,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829261002] [2021-03-26 13:51:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:25,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:25,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:25,834 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:25,834 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-03-26 13:51:25,834 INFO L142 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-03-26 13:51:25,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:25,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:25,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:25,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:25,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:25,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:25,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:25,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:25,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:25,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,849 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.4 percent of original size 39 [2021-03-26 13:51:25,849 INFO L142 QuantifierPusher]: treesize reduction -2, result has 105.3 percent of original size [2021-03-26 13:51:25,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:51:25,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:51:25,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:51:25,865 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-03-26 13:51:25,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:25,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:25,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:25,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:25,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:25,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242514935] [2021-03-26 13:51:25,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:25,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:25,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:25,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:25,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 88 [2021-03-26 13:51:25,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 1190 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:25,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:25,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 88 [2021-03-26 13:51:25,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:26,105 INFO L129 PetriNetUnfolder]: 76/180 cut-off events. [2021-03-26 13:51:26,105 INFO L130 PetriNetUnfolder]: For 5390/5419 co-relation queries the response was YES. [2021-03-26 13:51:26,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 180 events. 76/180 cut-off events. For 5390/5419 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 839 event pairs, 1 based on Foata normal form. 32/212 useless extension candidates. Maximal degree in co-relation 1617. Up to 155 conditions per place. [2021-03-26 13:51:26,106 INFO L132 encePairwiseOnDemand]: 55/88 looper letters, 57 selfloop transitions, 34 changer transitions 3/98 dead transitions. [2021-03-26 13:51:26,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 98 transitions, 1612 flow [2021-03-26 13:51:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2021-03-26 13:51:26,107 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.17613636363636365 [2021-03-26 13:51:26,107 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 155 transitions. [2021-03-26 13:51:26,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 155 transitions. [2021-03-26 13:51:26,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:26,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 155 transitions. [2021-03-26 13:51:26,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,108 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,108 INFO L185 Difference]: Start difference. First operand has 104 places, 92 transitions, 1190 flow. Second operand 10 states and 155 transitions. [2021-03-26 13:51:26,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 98 transitions, 1612 flow [2021-03-26 13:51:26,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 98 transitions, 1424 flow, removed 56 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:26,124 INFO L241 Difference]: Finished difference. Result has 116 places, 95 transitions, 1282 flow [2021-03-26 13:51:26,124 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1282, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2021-03-26 13:51:26,124 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 101 predicate places. [2021-03-26 13:51:26,124 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:26,124 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 95 transitions, 1282 flow [2021-03-26 13:51:26,125 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 95 transitions, 1282 flow [2021-03-26 13:51:26,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 95 transitions, 1282 flow [2021-03-26 13:51:26,135 INFO L129 PetriNetUnfolder]: 74/171 cut-off events. [2021-03-26 13:51:26,135 INFO L130 PetriNetUnfolder]: For 5395/5408 co-relation queries the response was YES. [2021-03-26 13:51:26,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 171 events. 74/171 cut-off events. For 5395/5408 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 757 event pairs, 0 based on Foata normal form. 2/173 useless extension candidates. Maximal degree in co-relation 1354. Up to 100 conditions per place. [2021-03-26 13:51:26,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:26,246 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:26,246 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:26,246 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-26 13:51:26,246 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 1142 flow [2021-03-26 13:51:26,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,246 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:26,246 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:26,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:26,460 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1144379725, now seen corresponding path program 1 times [2021-03-26 13:51:26,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:26,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469774998] [2021-03-26 13:51:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:26,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,471 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:26,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:26,493 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:26,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:26,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469774998] [2021-03-26 13:51:26,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625707569] [2021-03-26 13:51:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:26,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:26,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:26,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:26,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:26,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:26,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:26,542 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:26,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:26,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:26,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:26,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:26,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:26,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:26,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:26,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:26,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:26,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:26,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105659097] [2021-03-26 13:51:26,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:26,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:26,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:26,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:26,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2021-03-26 13:51:26,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 1142 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:26,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2021-03-26 13:51:26,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:26,729 INFO L129 PetriNetUnfolder]: 76/176 cut-off events. [2021-03-26 13:51:26,729 INFO L130 PetriNetUnfolder]: For 6606/6611 co-relation queries the response was YES. [2021-03-26 13:51:26,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 176 events. 76/176 cut-off events. For 6606/6611 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 816 event pairs, 0 based on Foata normal form. 1/177 useless extension candidates. Maximal degree in co-relation 1595. Up to 104 conditions per place. [2021-03-26 13:51:26,730 INFO L132 encePairwiseOnDemand]: 59/91 looper letters, 32 selfloop transitions, 56 changer transitions 2/96 dead transitions. [2021-03-26 13:51:26,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 1586 flow [2021-03-26 13:51:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2021-03-26 13:51:26,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23626373626373626 [2021-03-26 13:51:26,731 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2021-03-26 13:51:26,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2021-03-26 13:51:26,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:26,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2021-03-26 13:51:26,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,732 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,732 INFO L185 Difference]: Start difference. First operand has 110 places, 92 transitions, 1142 flow. Second operand 6 states and 129 transitions. [2021-03-26 13:51:26,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 1586 flow [2021-03-26 13:51:26,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 96 transitions, 1412 flow, removed 41 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:26,746 INFO L241 Difference]: Finished difference. Result has 107 places, 94 transitions, 1225 flow [2021-03-26 13:51:26,746 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1225, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2021-03-26 13:51:26,746 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 92 predicate places. [2021-03-26 13:51:26,746 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:26,746 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 94 transitions, 1225 flow [2021-03-26 13:51:26,746 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 94 transitions, 1225 flow [2021-03-26 13:51:26,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 94 transitions, 1225 flow [2021-03-26 13:51:26,756 INFO L129 PetriNetUnfolder]: 75/172 cut-off events. [2021-03-26 13:51:26,757 INFO L130 PetriNetUnfolder]: For 6249/6257 co-relation queries the response was YES. [2021-03-26 13:51:26,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 172 events. 75/172 cut-off events. For 6249/6257 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 788 event pairs, 1 based on Foata normal form. 2/174 useless extension candidates. Maximal degree in co-relation 1337. Up to 102 conditions per place. [2021-03-26 13:51:26,758 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:26,794 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:26,794 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:26,794 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-26 13:51:26,795 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 1226 flow [2021-03-26 13:51:26,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:26,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:26,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:26,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-03-26 13:51:27,000 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash 721493597, now seen corresponding path program 1 times [2021-03-26 13:51:27,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:27,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19425714] [2021-03-26 13:51:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:27,009 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:27,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:27,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:27,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:27,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:27,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:27,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19425714] [2021-03-26 13:51:27,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140131677] [2021-03-26 13:51:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:27,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:27,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,057 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:27,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:27,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:27,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:27,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:27,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:27,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:27,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:27,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:27,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:27,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:27,085 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:27,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:27,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:27,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:27,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:27,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836313514] [2021-03-26 13:51:27,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:27,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:27,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:27,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:27,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 92 [2021-03-26 13:51:27,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 1226 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:27,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 92 [2021-03-26 13:51:27,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:27,323 INFO L129 PetriNetUnfolder]: 78/184 cut-off events. [2021-03-26 13:51:27,323 INFO L130 PetriNetUnfolder]: For 5630/5630 co-relation queries the response was YES. [2021-03-26 13:51:27,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 184 events. 78/184 cut-off events. For 5630/5630 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 867 event pairs, 1 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 1667. Up to 159 conditions per place. [2021-03-26 13:51:27,325 INFO L132 encePairwiseOnDemand]: 58/92 looper letters, 58 selfloop transitions, 35 changer transitions 3/100 dead transitions. [2021-03-26 13:51:27,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 100 transitions, 1658 flow [2021-03-26 13:51:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2021-03-26 13:51:27,326 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16956521739130434 [2021-03-26 13:51:27,326 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 156 transitions. [2021-03-26 13:51:27,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 156 transitions. [2021-03-26 13:51:27,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:27,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 156 transitions. [2021-03-26 13:51:27,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,327 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,327 INFO L185 Difference]: Start difference. First operand has 106 places, 94 transitions, 1226 flow. Second operand 10 states and 156 transitions. [2021-03-26 13:51:27,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 100 transitions, 1658 flow [2021-03-26 13:51:27,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 100 transitions, 1432 flow, removed 58 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:27,344 INFO L241 Difference]: Finished difference. Result has 117 places, 97 transitions, 1288 flow [2021-03-26 13:51:27,344 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1288, PETRI_PLACES=117, PETRI_TRANSITIONS=97} [2021-03-26 13:51:27,344 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 102 predicate places. [2021-03-26 13:51:27,345 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:27,345 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 97 transitions, 1288 flow [2021-03-26 13:51:27,345 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 97 transitions, 1288 flow [2021-03-26 13:51:27,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 97 transitions, 1288 flow [2021-03-26 13:51:27,356 INFO L129 PetriNetUnfolder]: 76/175 cut-off events. [2021-03-26 13:51:27,356 INFO L130 PetriNetUnfolder]: For 5594/5602 co-relation queries the response was YES. [2021-03-26 13:51:27,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 175 events. 76/175 cut-off events. For 5594/5602 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 809 event pairs, 0 based on Foata normal form. 2/177 useless extension candidates. Maximal degree in co-relation 1396. Up to 104 conditions per place. [2021-03-26 13:51:27,357 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:27,471 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:27,471 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:27,471 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 126 [2021-03-26 13:51:27,472 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 1144 flow [2021-03-26 13:51:27,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:27,472 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:27,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:27,673 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1258982819, now seen corresponding path program 1 times [2021-03-26 13:51:27,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:27,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896536438] [2021-03-26 13:51:27,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:27,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,686 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:27,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:27,709 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:27,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:27,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896536438] [2021-03-26 13:51:27,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329822155] [2021-03-26 13:51:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:27,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:27,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:27,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:27,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:27,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:27,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:27,762 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:27,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:27,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:27,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:27,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:27,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:27,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:27,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:27,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:27,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:27,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:27,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481357521] [2021-03-26 13:51:27,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:27,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:27,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:27,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:27,777 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 95 [2021-03-26 13:51:27,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 1144 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:27,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 95 [2021-03-26 13:51:27,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:27,955 INFO L129 PetriNetUnfolder]: 79/181 cut-off events. [2021-03-26 13:51:27,955 INFO L130 PetriNetUnfolder]: For 8182/8187 co-relation queries the response was YES. [2021-03-26 13:51:27,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 181 events. 79/181 cut-off events. For 8182/8187 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 843 event pairs, 0 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 1678. Up to 108 conditions per place. [2021-03-26 13:51:27,957 INFO L132 encePairwiseOnDemand]: 62/95 looper letters, 32 selfloop transitions, 58 changer transitions 2/98 dead transitions. [2021-03-26 13:51:27,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 98 transitions, 1600 flow [2021-03-26 13:51:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2021-03-26 13:51:27,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22807017543859648 [2021-03-26 13:51:27,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 130 transitions. [2021-03-26 13:51:27,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 130 transitions. [2021-03-26 13:51:27,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:27,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 130 transitions. [2021-03-26 13:51:27,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:27,958 INFO L185 Difference]: Start difference. First operand has 111 places, 94 transitions, 1144 flow. Second operand 6 states and 130 transitions. [2021-03-26 13:51:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 98 transitions, 1600 flow [2021-03-26 13:51:27,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 1452 flow, removed 42 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:27,977 INFO L241 Difference]: Finished difference. Result has 109 places, 96 transitions, 1261 flow [2021-03-26 13:51:27,977 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1261, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2021-03-26 13:51:27,977 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 94 predicate places. [2021-03-26 13:51:27,977 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:27,977 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 96 transitions, 1261 flow [2021-03-26 13:51:27,977 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 96 transitions, 1261 flow [2021-03-26 13:51:27,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 96 transitions, 1261 flow [2021-03-26 13:51:27,988 INFO L129 PetriNetUnfolder]: 77/176 cut-off events. [2021-03-26 13:51:27,988 INFO L130 PetriNetUnfolder]: For 6451/6451 co-relation queries the response was YES. [2021-03-26 13:51:27,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 176 events. 77/176 cut-off events. For 6451/6451 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 814 event pairs, 1 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 1379. Up to 106 conditions per place. [2021-03-26 13:51:27,989 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:28,028 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:28,029 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:28,029 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-26 13:51:28,029 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 96 transitions, 1262 flow [2021-03-26 13:51:28,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:28,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:28,029 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:28,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-03-26 13:51:28,230 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:28,230 INFO L82 PathProgramCache]: Analyzing trace with hash -140227955, now seen corresponding path program 1 times [2021-03-26 13:51:28,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:28,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981008] [2021-03-26 13:51:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:28,239 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:28,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:28,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:28,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:28,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:28,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:28,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981008] [2021-03-26 13:51:28,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193986459] [2021-03-26 13:51:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:28,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:28,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:28,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,286 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:28,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:28,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:28,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:28,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:28,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:28,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:28,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:28,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:28,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:28,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:28,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,303 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-03-26 13:51:28,303 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-03-26 13:51:28,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:51:28,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:51:28,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:51:28,327 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:28,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-26 13:51:28,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 13:51:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:28,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:28,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:28,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254222427] [2021-03-26 13:51:28,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:28,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:28,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:28,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 96 [2021-03-26 13:51:28,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 96 transitions, 1262 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:28,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:28,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 96 [2021-03-26 13:51:28,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:28,553 INFO L129 PetriNetUnfolder]: 80/188 cut-off events. [2021-03-26 13:51:28,553 INFO L130 PetriNetUnfolder]: For 5965/5965 co-relation queries the response was YES. [2021-03-26 13:51:28,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 188 events. 80/188 cut-off events. For 5965/5965 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 889 event pairs, 1 based on Foata normal form. 3/191 useless extension candidates. Maximal degree in co-relation 1717. Up to 163 conditions per place. [2021-03-26 13:51:28,555 INFO L132 encePairwiseOnDemand]: 61/96 looper letters, 59 selfloop transitions, 36 changer transitions 3/102 dead transitions. [2021-03-26 13:51:28,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 102 transitions, 1704 flow [2021-03-26 13:51:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2021-03-26 13:51:28,557 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16354166666666667 [2021-03-26 13:51:28,557 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 157 transitions. [2021-03-26 13:51:28,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 157 transitions. [2021-03-26 13:51:28,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:28,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 157 transitions. [2021-03-26 13:51:28,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:28,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 96.0) internal successors, (1056), 11 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:28,558 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 96.0) internal successors, (1056), 11 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:28,558 INFO L185 Difference]: Start difference. First operand has 108 places, 96 transitions, 1262 flow. Second operand 10 states and 157 transitions. [2021-03-26 13:51:28,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 102 transitions, 1704 flow [2021-03-26 13:51:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 1502 flow, removed 60 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:28,576 INFO L241 Difference]: Finished difference. Result has 120 places, 99 transitions, 1356 flow [2021-03-26 13:51:28,576 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1356, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2021-03-26 13:51:28,576 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 105 predicate places. [2021-03-26 13:51:28,576 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:28,577 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 99 transitions, 1356 flow [2021-03-26 13:51:28,577 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 99 transitions, 1356 flow [2021-03-26 13:51:28,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 99 transitions, 1356 flow [2021-03-26 13:51:28,588 INFO L129 PetriNetUnfolder]: 78/179 cut-off events. [2021-03-26 13:51:28,588 INFO L130 PetriNetUnfolder]: For 5953/5958 co-relation queries the response was YES. [2021-03-26 13:51:28,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 179 events. 78/179 cut-off events. For 5953/5958 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 848 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 1440. Up to 108 conditions per place. [2021-03-26 13:51:28,590 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:28,696 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:28,696 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:28,696 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 120 [2021-03-26 13:51:28,697 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 1208 flow [2021-03-26 13:51:28,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:28,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:28,697 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:28,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-03-26 13:51:28,897 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1373412933, now seen corresponding path program 1 times [2021-03-26 13:51:28,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:28,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319571025] [2021-03-26 13:51:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:28,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,914 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:28,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:28,936 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:28,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:28,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319571025] [2021-03-26 13:51:28,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949056980] [2021-03-26 13:51:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:28,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:28,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:28,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:28,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:28,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:28,992 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:28,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:28,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:28,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:28,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:28,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:28,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:29,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:29,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:29,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:29,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068082136] [2021-03-26 13:51:29,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:29,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:29,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:29,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:29,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 99 [2021-03-26 13:51:29,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 1208 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:29,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 99 [2021-03-26 13:51:29,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:29,171 INFO L129 PetriNetUnfolder]: 81/185 cut-off events. [2021-03-26 13:51:29,171 INFO L130 PetriNetUnfolder]: For 8789/8794 co-relation queries the response was YES. [2021-03-26 13:51:29,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 185 events. 81/185 cut-off events. For 8789/8794 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 869 event pairs, 0 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 1729. Up to 112 conditions per place. [2021-03-26 13:51:29,172 INFO L132 encePairwiseOnDemand]: 65/99 looper letters, 32 selfloop transitions, 60 changer transitions 2/100 dead transitions. [2021-03-26 13:51:29,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 100 transitions, 1676 flow [2021-03-26 13:51:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2021-03-26 13:51:29,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22053872053872053 [2021-03-26 13:51:29,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 131 transitions. [2021-03-26 13:51:29,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 131 transitions. [2021-03-26 13:51:29,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:29,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 131 transitions. [2021-03-26 13:51:29,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,174 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,174 INFO L185 Difference]: Start difference. First operand has 114 places, 96 transitions, 1208 flow. Second operand 6 states and 131 transitions. [2021-03-26 13:51:29,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 100 transitions, 1676 flow [2021-03-26 13:51:29,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 100 transitions, 1492 flow, removed 43 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:29,189 INFO L241 Difference]: Finished difference. Result has 111 places, 98 transitions, 1297 flow [2021-03-26 13:51:29,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1297, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2021-03-26 13:51:29,190 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 96 predicate places. [2021-03-26 13:51:29,190 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:29,190 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 98 transitions, 1297 flow [2021-03-26 13:51:29,190 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 98 transitions, 1297 flow [2021-03-26 13:51:29,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 98 transitions, 1297 flow [2021-03-26 13:51:29,201 INFO L129 PetriNetUnfolder]: 79/180 cut-off events. [2021-03-26 13:51:29,202 INFO L130 PetriNetUnfolder]: For 6856/6857 co-relation queries the response was YES. [2021-03-26 13:51:29,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 180 events. 79/180 cut-off events. For 6856/6857 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 845 event pairs, 1 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 1421. Up to 110 conditions per place. [2021-03-26 13:51:29,203 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:29,241 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:29,241 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:29,241 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-03-26 13:51:29,242 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 1298 flow [2021-03-26 13:51:29,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:29,242 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:29,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:29,442 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:29,442 INFO L82 PathProgramCache]: Analyzing trace with hash -136533871, now seen corresponding path program 1 times [2021-03-26 13:51:29,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:29,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563302326] [2021-03-26 13:51:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:29,448 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:29,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:29,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:29,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:29,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:29,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:29,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563302326] [2021-03-26 13:51:29,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37477473] [2021-03-26 13:51:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:29,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:29,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:29,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:29,502 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:29,502 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-03-26 13:51:29,503 INFO L142 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-03-26 13:51:29,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:29,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:29,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:29,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:29,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:29,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:29,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:29,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:29,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:29,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,518 INFO L147 QuantifierPusher]: treesize reduction -1, result has 102.1 percent of original size 49 [2021-03-26 13:51:29,518 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.0 percent of original size [2021-03-26 13:51:29,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-26 13:51:29,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-26 13:51:29,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-26 13:51:29,538 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-03-26 13:51:29,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-03-26 13:51:29,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:29,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:51:29,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-26 13:51:29,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:29,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:29,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:29,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:29,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975592256] [2021-03-26 13:51:29,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:29,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:29,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:29,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 100 [2021-03-26 13:51:29,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 1298 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:29,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 100 [2021-03-26 13:51:29,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:29,770 INFO L129 PetriNetUnfolder]: 82/189 cut-off events. [2021-03-26 13:51:29,770 INFO L130 PetriNetUnfolder]: For 6308/6308 co-relation queries the response was YES. [2021-03-26 13:51:29,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 189 events. 82/189 cut-off events. For 6308/6308 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 887 event pairs, 1 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 1722. Up to 167 conditions per place. [2021-03-26 13:51:29,772 INFO L132 encePairwiseOnDemand]: 64/100 looper letters, 60 selfloop transitions, 36 changer transitions 2/102 dead transitions. [2021-03-26 13:51:29,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 102 transitions, 1662 flow [2021-03-26 13:51:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2021-03-26 13:51:29,774 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16875 [2021-03-26 13:51:29,774 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 135 transitions. [2021-03-26 13:51:29,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 135 transitions. [2021-03-26 13:51:29,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:29,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 135 transitions. [2021-03-26 13:51:29,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,775 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,775 INFO L185 Difference]: Start difference. First operand has 110 places, 98 transitions, 1298 flow. Second operand 8 states and 135 transitions. [2021-03-26 13:51:29,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 102 transitions, 1662 flow [2021-03-26 13:51:29,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 1453 flow, removed 62 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:29,794 INFO L241 Difference]: Finished difference. Result has 118 places, 100 transitions, 1315 flow [2021-03-26 13:51:29,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=118, PETRI_TRANSITIONS=100} [2021-03-26 13:51:29,794 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 103 predicate places. [2021-03-26 13:51:29,794 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:29,794 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 100 transitions, 1315 flow [2021-03-26 13:51:29,794 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 100 transitions, 1315 flow [2021-03-26 13:51:29,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 100 transitions, 1315 flow [2021-03-26 13:51:29,806 INFO L129 PetriNetUnfolder]: 80/182 cut-off events. [2021-03-26 13:51:29,806 INFO L130 PetriNetUnfolder]: For 6293/6344 co-relation queries the response was YES. [2021-03-26 13:51:29,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 182 events. 80/182 cut-off events. For 6293/6344 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 845 event pairs, 0 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 1415. Up to 111 conditions per place. [2021-03-26 13:51:29,807 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:29,881 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:29,881 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:29,881 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 87 [2021-03-26 13:51:29,881 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 1235 flow [2021-03-26 13:51:29,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:29,881 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:29,881 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:30,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-03-26 13:51:30,096 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1487929537, now seen corresponding path program 1 times [2021-03-26 13:51:30,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:30,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267800610] [2021-03-26 13:51:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:30,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,109 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:30,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:30,131 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:30,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:30,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267800610] [2021-03-26 13:51:30,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462560125] [2021-03-26 13:51:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:30,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:30,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:30,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:30,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:30,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:30,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:30,181 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:30,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:30,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:30,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:30,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:30,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:30,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:30,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:30,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:30,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907397797] [2021-03-26 13:51:30,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:30,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:30,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:30,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:30,194 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 102 [2021-03-26 13:51:30,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 1235 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:30,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 102 [2021-03-26 13:51:30,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:30,374 INFO L129 PetriNetUnfolder]: 83/189 cut-off events. [2021-03-26 13:51:30,374 INFO L130 PetriNetUnfolder]: For 9018/9023 co-relation queries the response was YES. [2021-03-26 13:51:30,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 189 events. 83/189 cut-off events. For 9018/9023 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 886 event pairs, 0 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 1745. Up to 116 conditions per place. [2021-03-26 13:51:30,377 INFO L132 encePairwiseOnDemand]: 67/102 looper letters, 32 selfloop transitions, 62 changer transitions 2/102 dead transitions. [2021-03-26 13:51:30,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 1715 flow [2021-03-26 13:51:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2021-03-26 13:51:30,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.21568627450980393 [2021-03-26 13:51:30,378 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 132 transitions. [2021-03-26 13:51:30,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 132 transitions. [2021-03-26 13:51:30,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:30,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 132 transitions. [2021-03-26 13:51:30,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,379 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,379 INFO L185 Difference]: Start difference. First operand has 114 places, 98 transitions, 1235 flow. Second operand 6 states and 132 transitions. [2021-03-26 13:51:30,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 1715 flow [2021-03-26 13:51:30,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 1532 flow, removed 41 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:30,404 INFO L241 Difference]: Finished difference. Result has 113 places, 100 transitions, 1333 flow [2021-03-26 13:51:30,404 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1333, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2021-03-26 13:51:30,404 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 98 predicate places. [2021-03-26 13:51:30,404 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:30,404 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 100 transitions, 1333 flow [2021-03-26 13:51:30,404 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 100 transitions, 1333 flow [2021-03-26 13:51:30,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 100 transitions, 1333 flow [2021-03-26 13:51:30,416 INFO L129 PetriNetUnfolder]: 82/185 cut-off events. [2021-03-26 13:51:30,417 INFO L130 PetriNetUnfolder]: For 8159/8159 co-relation queries the response was YES. [2021-03-26 13:51:30,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 185 events. 82/185 cut-off events. For 8159/8159 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 855 event pairs, 1 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 1500. Up to 114 conditions per place. [2021-03-26 13:51:30,418 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:30,457 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:30,457 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:30,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 53 [2021-03-26 13:51:30,457 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 1334 flow [2021-03-26 13:51:30,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:30,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:30,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:30,660 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:30,660 INFO L82 PathProgramCache]: Analyzing trace with hash -133763308, now seen corresponding path program 1 times [2021-03-26 13:51:30,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:30,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212220748] [2021-03-26 13:51:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:30,666 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:30,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:30,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:30,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:30,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:30,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:30,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212220748] [2021-03-26 13:51:30,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308965270] [2021-03-26 13:51:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:30,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:30,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:30,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:30,715 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:30,715 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-03-26 13:51:30,719 INFO L142 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-03-26 13:51:30,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:30,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:30,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:30,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:30,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:30,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:30,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:30,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:30,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:30,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,734 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.3 percent of original size 49 [2021-03-26 13:51:30,735 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.2 percent of original size [2021-03-26 13:51:30,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:30,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:30,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:30,751 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:30,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:30,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:30,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:30,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:30,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:30,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530743137] [2021-03-26 13:51:30,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:30,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:30,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:30,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:30,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 103 [2021-03-26 13:51:30,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 1334 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:30,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 103 [2021-03-26 13:51:30,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:30,994 INFO L129 PetriNetUnfolder]: 84/193 cut-off events. [2021-03-26 13:51:30,994 INFO L130 PetriNetUnfolder]: For 6663/6663 co-relation queries the response was YES. [2021-03-26 13:51:30,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 193 events. 84/193 cut-off events. For 6663/6663 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 913 event pairs, 1 based on Foata normal form. 2/195 useless extension candidates. Maximal degree in co-relation 1771. Up to 171 conditions per place. [2021-03-26 13:51:30,996 INFO L132 encePairwiseOnDemand]: 66/103 looper letters, 61 selfloop transitions, 37 changer transitions 2/104 dead transitions. [2021-03-26 13:51:30,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 104 transitions, 1706 flow [2021-03-26 13:51:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2021-03-26 13:51:30,996 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1650485436893204 [2021-03-26 13:51:30,996 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 136 transitions. [2021-03-26 13:51:30,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 136 transitions. [2021-03-26 13:51:30,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:30,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 136 transitions. [2021-03-26 13:51:30,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 103.0) internal successors, (927), 9 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 103.0) internal successors, (927), 9 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:30,997 INFO L185 Difference]: Start difference. First operand has 112 places, 100 transitions, 1334 flow. Second operand 8 states and 136 transitions. [2021-03-26 13:51:30,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 104 transitions, 1706 flow [2021-03-26 13:51:31,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 1456 flow, removed 64 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:31,016 INFO L241 Difference]: Finished difference. Result has 119 places, 102 transitions, 1316 flow [2021-03-26 13:51:31,016 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1316, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2021-03-26 13:51:31,016 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 104 predicate places. [2021-03-26 13:51:31,017 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:31,017 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 102 transitions, 1316 flow [2021-03-26 13:51:31,017 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 102 transitions, 1316 flow [2021-03-26 13:51:31,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 102 transitions, 1316 flow [2021-03-26 13:51:31,028 INFO L129 PetriNetUnfolder]: 82/186 cut-off events. [2021-03-26 13:51:31,028 INFO L130 PetriNetUnfolder]: For 6547/6600 co-relation queries the response was YES. [2021-03-26 13:51:31,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 186 events. 82/186 cut-off events. For 6547/6600 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 871 event pairs, 0 based on Foata normal form. 1/187 useless extension candidates. Maximal degree in co-relation 1455. Up to 115 conditions per place. [2021-03-26 13:51:31,030 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:31,105 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:31,105 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:31,105 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 88 [2021-03-26 13:51:31,106 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 1234 flow [2021-03-26 13:51:31,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:31,106 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:31,106 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:31,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-03-26 13:51:31,312 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1573816990, now seen corresponding path program 1 times [2021-03-26 13:51:31,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:31,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241775641] [2021-03-26 13:51:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:31,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,323 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:31,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:31,347 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:31,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:31,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241775641] [2021-03-26 13:51:31,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590917878] [2021-03-26 13:51:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:31,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:31,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:31,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:31,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:31,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:31,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:31,398 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:31,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:31,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:31,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:31,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:31,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:31,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:31,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:31,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:31,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074711249] [2021-03-26 13:51:31,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:31,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:31,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:31,411 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 105 [2021-03-26 13:51:31,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:31,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:31,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 105 [2021-03-26 13:51:31,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:31,604 INFO L129 PetriNetUnfolder]: 85/193 cut-off events. [2021-03-26 13:51:31,604 INFO L130 PetriNetUnfolder]: For 9391/9396 co-relation queries the response was YES. [2021-03-26 13:51:31,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 193 events. 85/193 cut-off events. For 9391/9396 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 916 event pairs, 0 based on Foata normal form. 1/194 useless extension candidates. Maximal degree in co-relation 1793. Up to 120 conditions per place. [2021-03-26 13:51:31,606 INFO L132 encePairwiseOnDemand]: 69/105 looper letters, 32 selfloop transitions, 64 changer transitions 2/104 dead transitions. [2021-03-26 13:51:31,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 104 transitions, 1726 flow [2021-03-26 13:51:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2021-03-26 13:51:31,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2111111111111111 [2021-03-26 13:51:31,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2021-03-26 13:51:31,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2021-03-26 13:51:31,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:31,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2021-03-26 13:51:31,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:31,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:31,607 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:31,607 INFO L185 Difference]: Start difference. First operand has 115 places, 100 transitions, 1234 flow. Second operand 6 states and 133 transitions. [2021-03-26 13:51:31,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 104 transitions, 1726 flow [2021-03-26 13:51:31,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 1572 flow, removed 42 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:31,629 INFO L241 Difference]: Finished difference. Result has 115 places, 102 transitions, 1369 flow [2021-03-26 13:51:31,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1369, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2021-03-26 13:51:31,631 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 100 predicate places. [2021-03-26 13:51:31,631 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:31,631 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 102 transitions, 1369 flow [2021-03-26 13:51:31,632 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 102 transitions, 1369 flow [2021-03-26 13:51:31,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 102 transitions, 1369 flow [2021-03-26 13:51:31,644 INFO L129 PetriNetUnfolder]: 83/188 cut-off events. [2021-03-26 13:51:31,644 INFO L130 PetriNetUnfolder]: For 7708/7710 co-relation queries the response was YES. [2021-03-26 13:51:31,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 188 events. 83/188 cut-off events. For 7708/7710 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 899 event pairs, 1 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 1505. Up to 118 conditions per place. [2021-03-26 13:51:31,645 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:31,683 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:31,683 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:31,683 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-26 13:51:31,683 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 1370 flow [2021-03-26 13:51:31,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:31,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:31,683 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:31,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-03-26 13:51:31,884 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:31,884 INFO L82 PathProgramCache]: Analyzing trace with hash -130992745, now seen corresponding path program 1 times [2021-03-26 13:51:31,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:31,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279288083] [2021-03-26 13:51:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:31,890 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:31,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:31,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:31,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:31,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:31,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:31,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279288083] [2021-03-26 13:51:31,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061442884] [2021-03-26 13:51:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:31,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:31,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:31,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:31,940 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:31,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:31,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:31,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:31,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:31,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:31,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:31,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:31,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:31,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:31,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:31,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,955 INFO L147 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size 49 [2021-03-26 13:51:31,955 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:31,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:31,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:31,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:31,972 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:31,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:31,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:31,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:31,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:32,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:32,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:32,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:32,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:32,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997121561] [2021-03-26 13:51:32,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:32,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:32,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:32,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:32,002 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 106 [2021-03-26 13:51:32,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 1370 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:32,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 106 [2021-03-26 13:51:32,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:32,251 INFO L129 PetriNetUnfolder]: 86/197 cut-off events. [2021-03-26 13:51:32,251 INFO L130 PetriNetUnfolder]: For 7028/7028 co-relation queries the response was YES. [2021-03-26 13:51:32,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 197 events. 86/197 cut-off events. For 7028/7028 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 938 event pairs, 1 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 1820. Up to 175 conditions per place. [2021-03-26 13:51:32,253 INFO L132 encePairwiseOnDemand]: 68/106 looper letters, 62 selfloop transitions, 38 changer transitions 2/106 dead transitions. [2021-03-26 13:51:32,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 1750 flow [2021-03-26 13:51:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2021-03-26 13:51:32,253 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1615566037735849 [2021-03-26 13:51:32,254 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 137 transitions. [2021-03-26 13:51:32,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 137 transitions. [2021-03-26 13:51:32,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:32,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 137 transitions. [2021-03-26 13:51:32,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,254 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,254 INFO L185 Difference]: Start difference. First operand has 114 places, 102 transitions, 1370 flow. Second operand 8 states and 137 transitions. [2021-03-26 13:51:32,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 1750 flow [2021-03-26 13:51:32,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 106 transitions, 1527 flow, removed 66 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:32,272 INFO L241 Difference]: Finished difference. Result has 122 places, 104 transitions, 1385 flow [2021-03-26 13:51:32,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1385, PETRI_PLACES=122, PETRI_TRANSITIONS=104} [2021-03-26 13:51:32,272 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 107 predicate places. [2021-03-26 13:51:32,272 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:32,272 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 104 transitions, 1385 flow [2021-03-26 13:51:32,273 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 104 transitions, 1385 flow [2021-03-26 13:51:32,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 104 transitions, 1385 flow [2021-03-26 13:51:32,285 INFO L129 PetriNetUnfolder]: 84/190 cut-off events. [2021-03-26 13:51:32,285 INFO L130 PetriNetUnfolder]: For 6977/7031 co-relation queries the response was YES. [2021-03-26 13:51:32,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 190 events. 84/190 cut-off events. For 6977/7031 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 904 event pairs, 0 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 1497. Up to 119 conditions per place. [2021-03-26 13:51:32,286 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:32,368 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:32,368 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:32,368 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 96 [2021-03-26 13:51:32,369 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 1301 flow [2021-03-26 13:51:32,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,369 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:32,369 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:32,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:32,569 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1659790933, now seen corresponding path program 1 times [2021-03-26 13:51:32,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:32,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768354028] [2021-03-26 13:51:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:32,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,580 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:32,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:32,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:32,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:32,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768354028] [2021-03-26 13:51:32,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255264366] [2021-03-26 13:51:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:32,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:32,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:32,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:32,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:32,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:32,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:32,646 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:32,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:32,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:32,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:32,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:32,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:32,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:32,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:32,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:32,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:32,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:32,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878557964] [2021-03-26 13:51:32,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:32,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:32,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:32,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:32,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 108 [2021-03-26 13:51:32,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 1301 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:32,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 108 [2021-03-26 13:51:32,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:32,854 INFO L129 PetriNetUnfolder]: 87/197 cut-off events. [2021-03-26 13:51:32,854 INFO L130 PetriNetUnfolder]: For 9733/9825 co-relation queries the response was YES. [2021-03-26 13:51:32,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 197 events. 87/197 cut-off events. For 9733/9825 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 933 event pairs, 0 based on Foata normal form. 33/230 useless extension candidates. Maximal degree in co-relation 1805. Up to 124 conditions per place. [2021-03-26 13:51:32,855 INFO L132 encePairwiseOnDemand]: 71/108 looper letters, 32 selfloop transitions, 66 changer transitions 2/106 dead transitions. [2021-03-26 13:51:32,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 106 transitions, 1805 flow [2021-03-26 13:51:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2021-03-26 13:51:32,856 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.20679012345679013 [2021-03-26 13:51:32,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 134 transitions. [2021-03-26 13:51:32,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 134 transitions. [2021-03-26 13:51:32,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:32,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 134 transitions. [2021-03-26 13:51:32,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,857 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,857 INFO L185 Difference]: Start difference. First operand has 118 places, 102 transitions, 1301 flow. Second operand 6 states and 134 transitions. [2021-03-26 13:51:32,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 106 transitions, 1805 flow [2021-03-26 13:51:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 106 transitions, 1612 flow, removed 43 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:32,884 INFO L241 Difference]: Finished difference. Result has 117 places, 104 transitions, 1405 flow [2021-03-26 13:51:32,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1405, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2021-03-26 13:51:32,884 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 102 predicate places. [2021-03-26 13:51:32,884 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:32,885 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 104 transitions, 1405 flow [2021-03-26 13:51:32,885 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 104 transitions, 1405 flow [2021-03-26 13:51:32,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 104 transitions, 1405 flow [2021-03-26 13:51:32,901 INFO L129 PetriNetUnfolder]: 85/192 cut-off events. [2021-03-26 13:51:32,901 INFO L130 PetriNetUnfolder]: For 6366/6367 co-relation queries the response was YES. [2021-03-26 13:51:32,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 192 events. 85/192 cut-off events. For 6366/6367 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 913 event pairs, 0 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 1547. Up to 122 conditions per place. [2021-03-26 13:51:32,902 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:32,904 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:32,904 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:51:32,904 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 13:51:32,904 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 1405 flow [2021-03-26 13:51:32,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:32,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:32,904 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:33,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:33,105 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash 737106964, now seen corresponding path program 1 times [2021-03-26 13:51:33,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:33,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128755677] [2021-03-26 13:51:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:33,112 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:33,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:33,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:33,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:33,132 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:33,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:33,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128755677] [2021-03-26 13:51:33,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586839179] [2021-03-26 13:51:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:33,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:33,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,161 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:33,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:33,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:33,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:33,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:33,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:33,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:33,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:33,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:33,194 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-03-26 13:51:33,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:33,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:33,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:33,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:33,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654466458] [2021-03-26 13:51:33,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:33,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:33,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:33,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:33,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 108 [2021-03-26 13:51:33,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 1405 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:33,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:33,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 108 [2021-03-26 13:51:33,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:33,505 INFO L129 PetriNetUnfolder]: 88/205 cut-off events. [2021-03-26 13:51:33,505 INFO L130 PetriNetUnfolder]: For 9169/9169 co-relation queries the response was YES. [2021-03-26 13:51:33,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 205 events. 88/205 cut-off events. For 9169/9169 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 991 event pairs, 0 based on Foata normal form. 3/208 useless extension candidates. Maximal degree in co-relation 1915. Up to 179 conditions per place. [2021-03-26 13:51:33,507 INFO L132 encePairwiseOnDemand]: 70/108 looper letters, 64 selfloop transitions, 39 changer transitions 3/110 dead transitions. [2021-03-26 13:51:33,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 1887 flow [2021-03-26 13:51:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2021-03-26 13:51:33,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.14814814814814814 [2021-03-26 13:51:33,508 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 160 transitions. [2021-03-26 13:51:33,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 160 transitions. [2021-03-26 13:51:33,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:33,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 160 transitions. [2021-03-26 13:51:33,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:33,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:33,509 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:33,509 INFO L185 Difference]: Start difference. First operand has 116 places, 104 transitions, 1405 flow. Second operand 10 states and 160 transitions. [2021-03-26 13:51:33,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 1887 flow [2021-03-26 13:51:33,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 110 transitions, 1624 flow, removed 67 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:33,528 INFO L241 Difference]: Finished difference. Result has 127 places, 107 transitions, 1468 flow [2021-03-26 13:51:33,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1468, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2021-03-26 13:51:33,529 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 112 predicate places. [2021-03-26 13:51:33,529 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:33,529 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 107 transitions, 1468 flow [2021-03-26 13:51:33,529 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 107 transitions, 1468 flow [2021-03-26 13:51:33,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 107 transitions, 1468 flow [2021-03-26 13:51:33,542 INFO L129 PetriNetUnfolder]: 86/197 cut-off events. [2021-03-26 13:51:33,542 INFO L130 PetriNetUnfolder]: For 7811/7813 co-relation queries the response was YES. [2021-03-26 13:51:33,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 197 events. 86/197 cut-off events. For 7811/7813 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 941 event pairs, 1 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 1648. Up to 124 conditions per place. [2021-03-26 13:51:33,544 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:33,683 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:33,683 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 13:51:33,683 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 154 [2021-03-26 13:51:33,683 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 1312 flow [2021-03-26 13:51:33,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:33,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:33,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:33,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:33,896 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1293368021, now seen corresponding path program 1 times [2021-03-26 13:51:33,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:33,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834314237] [2021-03-26 13:51:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:33,903 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:33,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:33,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:33,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:33,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:33,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:33,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:33,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834314237] [2021-03-26 13:51:33,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131973513] [2021-03-26 13:51:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:33,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-26 13:51:33,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,955 INFO L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-03-26 13:51:33,955 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-26 13:51:33,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:33,966 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:33,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:33,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:33,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:33,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:33,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:33,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:33,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,980 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-03-26 13:51:33,980 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size [2021-03-26 13:51:33,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:33,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:33,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:33,997 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-03-26 13:51:33,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:33,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:33,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:33,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:33,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:34,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:34,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:34,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192386180] [2021-03-26 13:51:34,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:34,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 112 [2021-03-26 13:51:34,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 1312 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:34,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 112 [2021-03-26 13:51:34,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:34,299 INFO L129 PetriNetUnfolder]: 87/202 cut-off events. [2021-03-26 13:51:34,299 INFO L130 PetriNetUnfolder]: For 9273/9308 co-relation queries the response was YES. [2021-03-26 13:51:34,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 202 events. 87/202 cut-off events. For 9273/9308 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 958 event pairs, 0 based on Foata normal form. 37/239 useless extension candidates. Maximal degree in co-relation 1931. Up to 178 conditions per place. [2021-03-26 13:51:34,301 INFO L132 encePairwiseOnDemand]: 67/112 looper letters, 56 selfloop transitions, 46 changer transitions 2/108 dead transitions. [2021-03-26 13:51:34,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 108 transitions, 1832 flow [2021-03-26 13:51:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:51:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:51:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2021-03-26 13:51:34,301 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.14781746031746032 [2021-03-26 13:51:34,301 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 149 transitions. [2021-03-26 13:51:34,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 149 transitions. [2021-03-26 13:51:34,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:34,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 149 transitions. [2021-03-26 13:51:34,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,302 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,303 INFO L185 Difference]: Start difference. First operand has 121 places, 104 transitions, 1312 flow. Second operand 9 states and 149 transitions. [2021-03-26 13:51:34,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 108 transitions, 1832 flow [2021-03-26 13:51:34,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 108 transitions, 1660 flow, removed 49 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:34,322 INFO L241 Difference]: Finished difference. Result has 124 places, 106 transitions, 1402 flow [2021-03-26 13:51:34,323 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=124, PETRI_TRANSITIONS=106} [2021-03-26 13:51:34,323 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 109 predicate places. [2021-03-26 13:51:34,323 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:34,323 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 106 transitions, 1402 flow [2021-03-26 13:51:34,323 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 106 transitions, 1402 flow [2021-03-26 13:51:34,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 106 transitions, 1402 flow [2021-03-26 13:51:34,335 INFO L129 PetriNetUnfolder]: 86/194 cut-off events. [2021-03-26 13:51:34,335 INFO L130 PetriNetUnfolder]: For 6953/6960 co-relation queries the response was YES. [2021-03-26 13:51:34,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 194 events. 86/194 cut-off events. For 6953/6960 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 923 event pairs, 0 based on Foata normal form. 2/196 useless extension candidates. Maximal degree in co-relation 1483. Up to 123 conditions per place. [2021-03-26 13:51:34,337 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:34,410 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:34,411 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:34,411 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 88 [2021-03-26 13:51:34,411 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 1316 flow [2021-03-26 13:51:34,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,411 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:34,411 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:34,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:34,611 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:34,612 INFO L82 PathProgramCache]: Analyzing trace with hash -124528098, now seen corresponding path program 1 times [2021-03-26 13:51:34,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:34,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828804451] [2021-03-26 13:51:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:34,619 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:34,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:34,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:34,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:34,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:34,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:34,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828804451] [2021-03-26 13:51:34,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178688396] [2021-03-26 13:51:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:34,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:34,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:34,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:34,664 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:34,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:34,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:34,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:34,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:34,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:34,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:34,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:34,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:34,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:34,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:34,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,678 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-03-26 13:51:34,679 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-03-26 13:51:34,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:34,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:34,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:34,691 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 13:51:34,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:51:34,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:34,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:34,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:51:34,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:34,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:34,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:34,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:34,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359272658] [2021-03-26 13:51:34,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:34,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:34,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:34,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:34,720 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 114 [2021-03-26 13:51:34,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 1316 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:34,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 114 [2021-03-26 13:51:34,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:34,862 INFO L129 PetriNetUnfolder]: 88/201 cut-off events. [2021-03-26 13:51:34,862 INFO L130 PetriNetUnfolder]: For 8541/8576 co-relation queries the response was YES. [2021-03-26 13:51:34,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 201 events. 88/201 cut-off events. For 8541/8576 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 971 event pairs, 1 based on Foata normal form. 37/238 useless extension candidates. Maximal degree in co-relation 1767. Up to 179 conditions per place. [2021-03-26 13:51:34,863 INFO L132 encePairwiseOnDemand]: 75/114 looper letters, 63 selfloop transitions, 39 changer transitions 2/108 dead transitions. [2021-03-26 13:51:34,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 108 transitions, 1704 flow [2021-03-26 13:51:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2021-03-26 13:51:34,864 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1513157894736842 [2021-03-26 13:51:34,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 138 transitions. [2021-03-26 13:51:34,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 138 transitions. [2021-03-26 13:51:34,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:34,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 138 transitions. [2021-03-26 13:51:34,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,865 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,865 INFO L185 Difference]: Start difference. First operand has 120 places, 104 transitions, 1316 flow. Second operand 8 states and 138 transitions. [2021-03-26 13:51:34,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 108 transitions, 1704 flow [2021-03-26 13:51:34,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 108 transitions, 1528 flow, removed 44 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:34,885 INFO L241 Difference]: Finished difference. Result has 123 places, 106 transitions, 1384 flow [2021-03-26 13:51:34,885 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1384, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2021-03-26 13:51:34,885 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 108 predicate places. [2021-03-26 13:51:34,885 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:34,885 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 106 transitions, 1384 flow [2021-03-26 13:51:34,885 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 106 transitions, 1384 flow [2021-03-26 13:51:34,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 106 transitions, 1384 flow [2021-03-26 13:51:34,898 INFO L129 PetriNetUnfolder]: 86/194 cut-off events. [2021-03-26 13:51:34,898 INFO L130 PetriNetUnfolder]: For 7244/7300 co-relation queries the response was YES. [2021-03-26 13:51:34,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 194 events. 86/194 cut-off events. For 7244/7300 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 916 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 1537. Up to 123 conditions per place. [2021-03-26 13:51:34,899 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:34,975 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:34,975 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:34,975 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 90 [2021-03-26 13:51:34,975 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 1298 flow [2021-03-26 13:51:34,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:34,975 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:34,975 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:35,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:35,180 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:35,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1745678386, now seen corresponding path program 1 times [2021-03-26 13:51:35,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:35,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810604722] [2021-03-26 13:51:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:35,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,202 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:35,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:35,226 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:35,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810604722] [2021-03-26 13:51:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451886177] [2021-03-26 13:51:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:35,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:35,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:35,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:35,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:35,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:35,278 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:35,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:35,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:35,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:35,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:35,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:35,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:35,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:35,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:35,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712026566] [2021-03-26 13:51:35,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:35,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:35,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:35,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:35,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 116 [2021-03-26 13:51:35,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 1298 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:35,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:35,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 116 [2021-03-26 13:51:35,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:35,478 INFO L129 PetriNetUnfolder]: 88/200 cut-off events. [2021-03-26 13:51:35,478 INFO L130 PetriNetUnfolder]: For 8835/8840 co-relation queries the response was YES. [2021-03-26 13:51:35,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 200 events. 88/200 cut-off events. For 8835/8840 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 965 event pairs, 0 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 1851. Up to 128 conditions per place. [2021-03-26 13:51:35,479 INFO L132 encePairwiseOnDemand]: 78/116 looper letters, 32 selfloop transitions, 68 changer transitions 2/108 dead transitions. [2021-03-26 13:51:35,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 108 transitions, 1814 flow [2021-03-26 13:51:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2021-03-26 13:51:35,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1939655172413793 [2021-03-26 13:51:35,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 135 transitions. [2021-03-26 13:51:35,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 135 transitions. [2021-03-26 13:51:35,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:35,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 135 transitions. [2021-03-26 13:51:35,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:35,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:35,481 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:35,481 INFO L185 Difference]: Start difference. First operand has 119 places, 104 transitions, 1298 flow. Second operand 6 states and 135 transitions. [2021-03-26 13:51:35,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 108 transitions, 1814 flow [2021-03-26 13:51:35,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 108 transitions, 1652 flow, removed 44 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:35,515 INFO L241 Difference]: Finished difference. Result has 119 places, 106 transitions, 1441 flow [2021-03-26 13:51:35,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1441, PETRI_PLACES=119, PETRI_TRANSITIONS=106} [2021-03-26 13:51:35,515 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 104 predicate places. [2021-03-26 13:51:35,515 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:35,515 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 106 transitions, 1441 flow [2021-03-26 13:51:35,516 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 106 transitions, 1441 flow [2021-03-26 13:51:35,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 1441 flow [2021-03-26 13:51:35,532 INFO L129 PetriNetUnfolder]: 88/197 cut-off events. [2021-03-26 13:51:35,532 INFO L130 PetriNetUnfolder]: For 9056/9113 co-relation queries the response was YES. [2021-03-26 13:51:35,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 197 events. 88/197 cut-off events. For 9056/9113 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 931 event pairs, 0 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 1590. Up to 126 conditions per place. [2021-03-26 13:51:35,533 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:35,572 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:35,572 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:35,572 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-03-26 13:51:35,572 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 1442 flow [2021-03-26 13:51:35,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:35,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:35,572 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:35,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-03-26 13:51:35,775 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:35,775 INFO L82 PathProgramCache]: Analyzing trace with hash 744581622, now seen corresponding path program 1 times [2021-03-26 13:51:35,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:35,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038005068] [2021-03-26 13:51:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:35,781 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:35,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:35,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:35,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:35,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:35,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:35,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038005068] [2021-03-26 13:51:35,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180376627] [2021-03-26 13:51:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:35,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:35,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:35,842 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:35,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:35,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:35,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:35,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:35,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:35,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:35,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:35,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:35,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:35,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:35,872 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:35,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:35,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:35,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:35,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:35,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:35,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512766173] [2021-03-26 13:51:35,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:35,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:35,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 117 [2021-03-26 13:51:35,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 1442 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:35,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:35,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 117 [2021-03-26 13:51:35,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:36,073 INFO L129 PetriNetUnfolder]: 90/205 cut-off events. [2021-03-26 13:51:36,073 INFO L130 PetriNetUnfolder]: For 7878/7913 co-relation queries the response was YES. [2021-03-26 13:51:36,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 205 events. 90/205 cut-off events. For 7878/7913 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 985 event pairs, 1 based on Foata normal form. 37/242 useless extension candidates. Maximal degree in co-relation 1918. Up to 183 conditions per place. [2021-03-26 13:51:36,074 INFO L132 encePairwiseOnDemand]: 77/117 looper letters, 64 selfloop transitions, 40 changer transitions 2/110 dead transitions. [2021-03-26 13:51:36,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 1838 flow [2021-03-26 13:51:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2021-03-26 13:51:36,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1485042735042735 [2021-03-26 13:51:36,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 139 transitions. [2021-03-26 13:51:36,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 139 transitions. [2021-03-26 13:51:36,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:36,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 139 transitions. [2021-03-26 13:51:36,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,076 INFO L185 Difference]: Start difference. First operand has 118 places, 106 transitions, 1442 flow. Second operand 8 states and 139 transitions. [2021-03-26 13:51:36,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 1838 flow [2021-03-26 13:51:36,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 1601 flow, removed 70 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:36,095 INFO L241 Difference]: Finished difference. Result has 126 places, 108 transitions, 1455 flow [2021-03-26 13:51:36,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1455, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2021-03-26 13:51:36,095 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 111 predicate places. [2021-03-26 13:51:36,095 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:36,095 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 108 transitions, 1455 flow [2021-03-26 13:51:36,095 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 108 transitions, 1455 flow [2021-03-26 13:51:36,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 108 transitions, 1455 flow [2021-03-26 13:51:36,108 INFO L129 PetriNetUnfolder]: 88/198 cut-off events. [2021-03-26 13:51:36,108 INFO L130 PetriNetUnfolder]: For 7459/7465 co-relation queries the response was YES. [2021-03-26 13:51:36,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 198 events. 88/198 cut-off events. For 7459/7465 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 943 event pairs, 0 based on Foata normal form. 1/199 useless extension candidates. Maximal degree in co-relation 1579. Up to 127 conditions per place. [2021-03-26 13:51:36,110 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:36,187 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:36,188 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:36,188 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 93 [2021-03-26 13:51:36,188 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 1367 flow [2021-03-26 13:51:36,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:36,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:36,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-03-26 13:51:36,389 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1974711594, now seen corresponding path program 1 times [2021-03-26 13:51:36,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:36,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024894650] [2021-03-26 13:51:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:36,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,406 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:36,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:36,431 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:36,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:36,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024894650] [2021-03-26 13:51:36,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61059928] [2021-03-26 13:51:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:36,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:36,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:36,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:36,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:36,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:36,481 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:36,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:36,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:36,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:36,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:36,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:36,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:36,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:36,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:36,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723784718] [2021-03-26 13:51:36,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:36,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:36,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 119 [2021-03-26 13:51:36,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 1367 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:36,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 119 [2021-03-26 13:51:36,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:36,669 INFO L129 PetriNetUnfolder]: 91/205 cut-off events. [2021-03-26 13:51:36,670 INFO L130 PetriNetUnfolder]: For 11126/11131 co-relation queries the response was YES. [2021-03-26 13:51:36,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 205 events. 91/205 cut-off events. For 11126/11131 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 994 event pairs, 0 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 1941. Up to 132 conditions per place. [2021-03-26 13:51:36,671 INFO L132 encePairwiseOnDemand]: 80/119 looper letters, 32 selfloop transitions, 70 changer transitions 2/110 dead transitions. [2021-03-26 13:51:36,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 110 transitions, 1895 flow [2021-03-26 13:51:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2021-03-26 13:51:36,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.19047619047619047 [2021-03-26 13:51:36,672 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 136 transitions. [2021-03-26 13:51:36,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 136 transitions. [2021-03-26 13:51:36,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:36,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 136 transitions. [2021-03-26 13:51:36,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,673 INFO L185 Difference]: Start difference. First operand has 122 places, 106 transitions, 1367 flow. Second operand 6 states and 136 transitions. [2021-03-26 13:51:36,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 110 transitions, 1895 flow [2021-03-26 13:51:36,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 110 transitions, 1692 flow, removed 45 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:36,697 INFO L241 Difference]: Finished difference. Result has 121 places, 108 transitions, 1477 flow [2021-03-26 13:51:36,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1477, PETRI_PLACES=121, PETRI_TRANSITIONS=108} [2021-03-26 13:51:36,697 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 106 predicate places. [2021-03-26 13:51:36,697 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:36,697 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 108 transitions, 1477 flow [2021-03-26 13:51:36,697 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 108 transitions, 1477 flow [2021-03-26 13:51:36,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 108 transitions, 1477 flow [2021-03-26 13:51:36,711 INFO L129 PetriNetUnfolder]: 90/201 cut-off events. [2021-03-26 13:51:36,711 INFO L130 PetriNetUnfolder]: For 9760/9761 co-relation queries the response was YES. [2021-03-26 13:51:36,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 201 events. 90/201 cut-off events. For 9760/9761 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 961 event pairs, 1 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 1672. Up to 130 conditions per place. [2021-03-26 13:51:36,712 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:36,764 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:36,764 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:36,764 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-26 13:51:36,764 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 1478 flow [2021-03-26 13:51:36,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:36,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:36,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:36,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:36,965 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash -118063451, now seen corresponding path program 1 times [2021-03-26 13:51:36,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:36,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639130181] [2021-03-26 13:51:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:36,976 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:36,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:36,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:36,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:36,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:36,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:36,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:37,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:37,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639130181] [2021-03-26 13:51:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970826210] [2021-03-26 13:51:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:37,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:37,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:37,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,027 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:37,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:37,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:37,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:37,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:37,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:37,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:37,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:37,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:37,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:37,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:37,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:37,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:37,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:37,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:37,058 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-03-26 13:51:37,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:37,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:37,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:37,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:37,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659547324] [2021-03-26 13:51:37,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:37,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:37,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:37,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:37,085 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 120 [2021-03-26 13:51:37,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 1478 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:37,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 120 [2021-03-26 13:51:37,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:37,322 INFO L129 PetriNetUnfolder]: 92/209 cut-off events. [2021-03-26 13:51:37,323 INFO L130 PetriNetUnfolder]: For 8183/8183 co-relation queries the response was YES. [2021-03-26 13:51:37,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 209 events. 92/209 cut-off events. For 8183/8183 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1018 event pairs, 1 based on Foata normal form. 2/211 useless extension candidates. Maximal degree in co-relation 1967. Up to 187 conditions per place. [2021-03-26 13:51:37,324 INFO L132 encePairwiseOnDemand]: 79/120 looper letters, 65 selfloop transitions, 41 changer transitions 2/112 dead transitions. [2021-03-26 13:51:37,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 1882 flow [2021-03-26 13:51:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2021-03-26 13:51:37,325 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.14583333333333334 [2021-03-26 13:51:37,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 140 transitions. [2021-03-26 13:51:37,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 140 transitions. [2021-03-26 13:51:37,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:37,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 140 transitions. [2021-03-26 13:51:37,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,326 INFO L185 Difference]: Start difference. First operand has 120 places, 108 transitions, 1478 flow. Second operand 8 states and 140 transitions. [2021-03-26 13:51:37,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 1882 flow [2021-03-26 13:51:37,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 112 transitions, 1638 flow, removed 72 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:37,348 INFO L241 Difference]: Finished difference. Result has 128 places, 110 transitions, 1490 flow [2021-03-26 13:51:37,348 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1490, PETRI_PLACES=128, PETRI_TRANSITIONS=110} [2021-03-26 13:51:37,348 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 113 predicate places. [2021-03-26 13:51:37,348 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:37,348 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 110 transitions, 1490 flow [2021-03-26 13:51:37,349 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 110 transitions, 1490 flow [2021-03-26 13:51:37,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 110 transitions, 1490 flow [2021-03-26 13:51:37,362 INFO L129 PetriNetUnfolder]: 90/202 cut-off events. [2021-03-26 13:51:37,362 INFO L130 PetriNetUnfolder]: For 7807/7812 co-relation queries the response was YES. [2021-03-26 13:51:37,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 202 events. 90/202 cut-off events. For 7807/7812 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 963 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 1620. Up to 131 conditions per place. [2021-03-26 13:51:37,363 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:37,442 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:37,442 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:37,442 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-03-26 13:51:37,442 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 1400 flow [2021-03-26 13:51:37,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,442 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:37,442 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:37,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-03-26 13:51:37,643 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2060599047, now seen corresponding path program 1 times [2021-03-26 13:51:37,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:37,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368348571] [2021-03-26 13:51:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:37,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,653 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:37,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:37,678 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:37,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:37,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368348571] [2021-03-26 13:51:37,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768624768] [2021-03-26 13:51:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:37,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:37,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:37,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:37,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:37,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:37,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:37,732 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:37,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:37,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:37,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:37,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:37,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:37,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:37,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:37,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:37,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031573635] [2021-03-26 13:51:37,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:37,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:37,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:37,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:37,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 122 [2021-03-26 13:51:37,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 1400 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:37,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 122 [2021-03-26 13:51:37,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:37,944 INFO L129 PetriNetUnfolder]: 93/209 cut-off events. [2021-03-26 13:51:37,944 INFO L130 PetriNetUnfolder]: For 11709/11754 co-relation queries the response was YES. [2021-03-26 13:51:37,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 209 events. 93/209 cut-off events. For 11709/11754 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1018 event pairs, 0 based on Foata normal form. 41/250 useless extension candidates. Maximal degree in co-relation 1990. Up to 136 conditions per place. [2021-03-26 13:51:37,945 INFO L132 encePairwiseOnDemand]: 82/122 looper letters, 32 selfloop transitions, 72 changer transitions 2/112 dead transitions. [2021-03-26 13:51:37,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 112 transitions, 1940 flow [2021-03-26 13:51:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2021-03-26 13:51:37,947 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1871584699453552 [2021-03-26 13:51:37,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 137 transitions. [2021-03-26 13:51:37,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 137 transitions. [2021-03-26 13:51:37,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:37,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 137 transitions. [2021-03-26 13:51:37,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:37,949 INFO L185 Difference]: Start difference. First operand has 124 places, 108 transitions, 1400 flow. Second operand 6 states and 137 transitions. [2021-03-26 13:51:37,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 112 transitions, 1940 flow [2021-03-26 13:51:37,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 112 transitions, 1732 flow, removed 46 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:37,974 INFO L241 Difference]: Finished difference. Result has 123 places, 110 transitions, 1513 flow [2021-03-26 13:51:37,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1513, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2021-03-26 13:51:37,974 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 108 predicate places. [2021-03-26 13:51:37,974 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:37,974 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 110 transitions, 1513 flow [2021-03-26 13:51:37,974 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 110 transitions, 1513 flow [2021-03-26 13:51:37,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 110 transitions, 1513 flow [2021-03-26 13:51:37,988 INFO L129 PetriNetUnfolder]: 91/204 cut-off events. [2021-03-26 13:51:37,988 INFO L130 PetriNetUnfolder]: For 9719/9720 co-relation queries the response was YES. [2021-03-26 13:51:37,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 204 events. 91/204 cut-off events. For 9719/9720 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 984 event pairs, 1 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 1673. Up to 134 conditions per place. [2021-03-26 13:51:37,990 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:38,029 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:38,029 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:38,029 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-03-26 13:51:38,030 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1514 flow [2021-03-26 13:51:38,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:38,030 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:38,030 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:38,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-03-26 13:51:38,230 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:38,230 INFO L82 PathProgramCache]: Analyzing trace with hash -115379378, now seen corresponding path program 1 times [2021-03-26 13:51:38,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:38,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112968019] [2021-03-26 13:51:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:38,245 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:38,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:38,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:38,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:38,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:38,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:38,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112968019] [2021-03-26 13:51:38,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310074702] [2021-03-26 13:51:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:38,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:38,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:38,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:38,292 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:38,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:38,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:38,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:38,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:38,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:38,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:38,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:38,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:38,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:38,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:38,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,307 INFO L147 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size 49 [2021-03-26 13:51:38,307 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:38,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:38,326 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:38,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:38,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:38,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:38,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:38,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:38,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581196519] [2021-03-26 13:51:38,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:38,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:38,350 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 123 [2021-03-26 13:51:38,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1514 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:38,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:38,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 123 [2021-03-26 13:51:38,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:38,644 INFO L129 PetriNetUnfolder]: 94/216 cut-off events. [2021-03-26 13:51:38,645 INFO L130 PetriNetUnfolder]: For 8590/8590 co-relation queries the response was YES. [2021-03-26 13:51:38,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 216 events. 94/216 cut-off events. For 8590/8590 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1063 event pairs, 1 based on Foata normal form. 3/219 useless extension candidates. Maximal degree in co-relation 2067. Up to 191 conditions per place. [2021-03-26 13:51:38,646 INFO L132 encePairwiseOnDemand]: 81/123 looper letters, 66 selfloop transitions, 43 changer transitions 3/116 dead transitions. [2021-03-26 13:51:38,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 116 transitions, 2026 flow [2021-03-26 13:51:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2021-03-26 13:51:38,647 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.13333333333333333 [2021-03-26 13:51:38,647 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 164 transitions. [2021-03-26 13:51:38,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 164 transitions. [2021-03-26 13:51:38,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:38,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 164 transitions. [2021-03-26 13:51:38,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:38,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:38,648 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:38,648 INFO L185 Difference]: Start difference. First operand has 122 places, 110 transitions, 1514 flow. Second operand 10 states and 164 transitions. [2021-03-26 13:51:38,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 116 transitions, 2026 flow [2021-03-26 13:51:38,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 116 transitions, 1736 flow, removed 74 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:38,675 INFO L241 Difference]: Finished difference. Result has 133 places, 113 transitions, 1576 flow [2021-03-26 13:51:38,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1576, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2021-03-26 13:51:38,676 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 118 predicate places. [2021-03-26 13:51:38,676 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:38,676 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 113 transitions, 1576 flow [2021-03-26 13:51:38,676 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 113 transitions, 1576 flow [2021-03-26 13:51:38,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 113 transitions, 1576 flow [2021-03-26 13:51:38,695 INFO L129 PetriNetUnfolder]: 92/207 cut-off events. [2021-03-26 13:51:38,696 INFO L130 PetriNetUnfolder]: For 8349/8355 co-relation queries the response was YES. [2021-03-26 13:51:38,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 207 events. 92/207 cut-off events. For 8349/8355 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1015 event pairs, 0 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 1740. Up to 136 conditions per place. [2021-03-26 13:51:38,697 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:38,809 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:38,809 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:38,809 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 133 [2021-03-26 13:51:38,810 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 1400 flow [2021-03-26 13:51:38,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:38,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:38,810 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:39,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-03-26 13:51:39,010 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:39,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2146486500, now seen corresponding path program 1 times [2021-03-26 13:51:39,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:39,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418340394] [2021-03-26 13:51:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:39,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,032 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:39,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:39,061 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:39,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:39,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418340394] [2021-03-26 13:51:39,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039929625] [2021-03-26 13:51:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:39,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:39,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:39,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:39,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:39,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:39,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:39,117 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:39,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:39,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:39,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:39,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:39,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:39,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:39,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:39,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:39,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091215813] [2021-03-26 13:51:39,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:39,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:39,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:39,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:39,131 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 126 [2021-03-26 13:51:39,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 1400 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:39,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 126 [2021-03-26 13:51:39,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:39,332 INFO L129 PetriNetUnfolder]: 95/213 cut-off events. [2021-03-26 13:51:39,332 INFO L130 PetriNetUnfolder]: For 12430/12435 co-relation queries the response was YES. [2021-03-26 13:51:39,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 213 events. 95/213 cut-off events. For 12430/12435 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1038 event pairs, 0 based on Foata normal form. 1/214 useless extension candidates. Maximal degree in co-relation 2078. Up to 140 conditions per place. [2021-03-26 13:51:39,333 INFO L132 encePairwiseOnDemand]: 85/126 looper letters, 32 selfloop transitions, 74 changer transitions 2/114 dead transitions. [2021-03-26 13:51:39,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 114 transitions, 1952 flow [2021-03-26 13:51:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2021-03-26 13:51:39,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.18253968253968253 [2021-03-26 13:51:39,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 138 transitions. [2021-03-26 13:51:39,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 138 transitions. [2021-03-26 13:51:39,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:39,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 138 transitions. [2021-03-26 13:51:39,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,341 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,341 INFO L185 Difference]: Start difference. First operand has 127 places, 110 transitions, 1400 flow. Second operand 6 states and 138 transitions. [2021-03-26 13:51:39,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 114 transitions, 1952 flow [2021-03-26 13:51:39,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 114 transitions, 1772 flow, removed 50 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:39,368 INFO L241 Difference]: Finished difference. Result has 125 places, 112 transitions, 1549 flow [2021-03-26 13:51:39,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1549, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2021-03-26 13:51:39,369 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 110 predicate places. [2021-03-26 13:51:39,369 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:39,369 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 112 transitions, 1549 flow [2021-03-26 13:51:39,369 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 112 transitions, 1549 flow [2021-03-26 13:51:39,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 112 transitions, 1549 flow [2021-03-26 13:51:39,383 INFO L129 PetriNetUnfolder]: 93/208 cut-off events. [2021-03-26 13:51:39,383 INFO L130 PetriNetUnfolder]: For 9955/9955 co-relation queries the response was YES. [2021-03-26 13:51:39,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 208 events. 93/208 cut-off events. For 9955/9955 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1004 event pairs, 1 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 1715. Up to 138 conditions per place. [2021-03-26 13:51:39,384 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:39,425 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:39,425 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:39,425 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-26 13:51:39,425 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 112 transitions, 1550 flow [2021-03-26 13:51:39,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,425 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:39,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:39,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:39,630 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:39,630 INFO L82 PathProgramCache]: Analyzing trace with hash 657207502, now seen corresponding path program 1 times [2021-03-26 13:51:39,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:39,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376112556] [2021-03-26 13:51:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:39,637 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:39,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:39,648 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:39,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:39,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:39,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:39,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376112556] [2021-03-26 13:51:39,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822565445] [2021-03-26 13:51:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:39,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:39,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:39,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:39,688 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:39,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:39,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:39,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:39,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:39,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:39,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:39,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:39,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:39,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:39,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:39,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:39,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:39,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:39,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:39,723 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:39,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:39,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:39,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:39,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-26 13:51:39,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:39,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:39,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:39,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:39,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:39,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:39,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:39,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:39,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:39,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314193223] [2021-03-26 13:51:39,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:39,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:39,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:39,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:39,744 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 127 [2021-03-26 13:51:39,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 112 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:39,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 127 [2021-03-26 13:51:39,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:39,960 INFO L129 PetriNetUnfolder]: 96/217 cut-off events. [2021-03-26 13:51:39,960 INFO L130 PetriNetUnfolder]: For 9003/9003 co-relation queries the response was YES. [2021-03-26 13:51:39,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 217 events. 96/217 cut-off events. For 9003/9003 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1065 event pairs, 1 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 2065. Up to 195 conditions per place. [2021-03-26 13:51:39,962 INFO L132 encePairwiseOnDemand]: 84/127 looper letters, 67 selfloop transitions, 43 changer transitions 2/116 dead transitions. [2021-03-26 13:51:39,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 116 transitions, 1970 flow [2021-03-26 13:51:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2021-03-26 13:51:39,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.13976377952755906 [2021-03-26 13:51:39,963 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 142 transitions. [2021-03-26 13:51:39,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 142 transitions. [2021-03-26 13:51:39,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:39,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 142 transitions. [2021-03-26 13:51:39,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,964 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:39,964 INFO L185 Difference]: Start difference. First operand has 124 places, 112 transitions, 1550 flow. Second operand 8 states and 142 transitions. [2021-03-26 13:51:39,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 116 transitions, 1970 flow [2021-03-26 13:51:39,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 116 transitions, 1712 flow, removed 76 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:39,986 INFO L241 Difference]: Finished difference. Result has 132 places, 114 transitions, 1560 flow [2021-03-26 13:51:39,986 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1560, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2021-03-26 13:51:39,986 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 117 predicate places. [2021-03-26 13:51:39,986 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:39,986 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 114 transitions, 1560 flow [2021-03-26 13:51:39,987 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 114 transitions, 1560 flow [2021-03-26 13:51:39,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 114 transitions, 1560 flow [2021-03-26 13:51:40,001 INFO L129 PetriNetUnfolder]: 94/210 cut-off events. [2021-03-26 13:51:40,001 INFO L130 PetriNetUnfolder]: For 8570/8575 co-relation queries the response was YES. [2021-03-26 13:51:40,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 210 events. 94/210 cut-off events. For 8570/8575 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1037 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 1702. Up to 139 conditions per place. [2021-03-26 13:51:40,003 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:40,082 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:40,082 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:40,082 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 96 [2021-03-26 13:51:40,082 INFO L480 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 1466 flow [2021-03-26 13:51:40,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:40,083 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:40,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:40,296 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash -2033964192, now seen corresponding path program 1 times [2021-03-26 13:51:40,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:40,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274665170] [2021-03-26 13:51:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:40,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,306 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:40,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:40,329 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:40,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:40,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274665170] [2021-03-26 13:51:40,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952880892] [2021-03-26 13:51:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:40,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:40,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:40,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:40,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:40,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:40,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:40,377 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:40,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:40,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:40,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:40,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:40,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:40,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:40,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:40,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:40,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067345814] [2021-03-26 13:51:40,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:40,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:40,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:40,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:40,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 129 [2021-03-26 13:51:40,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:40,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 129 [2021-03-26 13:51:40,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:40,605 INFO L129 PetriNetUnfolder]: 97/217 cut-off events. [2021-03-26 13:51:40,605 INFO L130 PetriNetUnfolder]: For 12854/12859 co-relation queries the response was YES. [2021-03-26 13:51:40,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 217 events. 97/217 cut-off events. For 12854/12859 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1065 event pairs, 0 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 2088. Up to 144 conditions per place. [2021-03-26 13:51:40,606 INFO L132 encePairwiseOnDemand]: 87/129 looper letters, 32 selfloop transitions, 76 changer transitions 2/116 dead transitions. [2021-03-26 13:51:40,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 116 transitions, 2030 flow [2021-03-26 13:51:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2021-03-26 13:51:40,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.17958656330749354 [2021-03-26 13:51:40,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2021-03-26 13:51:40,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2021-03-26 13:51:40,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:40,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2021-03-26 13:51:40,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,608 INFO L185 Difference]: Start difference. First operand has 128 places, 112 transitions, 1466 flow. Second operand 6 states and 139 transitions. [2021-03-26 13:51:40,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 116 transitions, 2030 flow [2021-03-26 13:51:40,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 116 transitions, 1812 flow, removed 48 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:40,633 INFO L241 Difference]: Finished difference. Result has 127 places, 114 transitions, 1585 flow [2021-03-26 13:51:40,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1585, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2021-03-26 13:51:40,634 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 112 predicate places. [2021-03-26 13:51:40,634 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:40,634 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 114 transitions, 1585 flow [2021-03-26 13:51:40,634 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 114 transitions, 1585 flow [2021-03-26 13:51:40,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 114 transitions, 1585 flow [2021-03-26 13:51:40,648 INFO L129 PetriNetUnfolder]: 96/213 cut-off events. [2021-03-26 13:51:40,648 INFO L130 PetriNetUnfolder]: For 11318/11319 co-relation queries the response was YES. [2021-03-26 13:51:40,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 213 events. 96/213 cut-off events. For 11318/11319 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1037 event pairs, 1 based on Foata normal form. 1/214 useless extension candidates. Maximal degree in co-relation 1801. Up to 142 conditions per place. [2021-03-26 13:51:40,650 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:40,689 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:40,689 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:40,689 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-03-26 13:51:40,689 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 114 transitions, 1586 flow [2021-03-26 13:51:40,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:40,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:40,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:40,890 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:40,890 INFO L82 PathProgramCache]: Analyzing trace with hash -108828241, now seen corresponding path program 1 times [2021-03-26 13:51:40,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:40,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231339043] [2021-03-26 13:51:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:40,895 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:40,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:40,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:40,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:40,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:40,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:40,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231339043] [2021-03-26 13:51:40,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278789979] [2021-03-26 13:51:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:40,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:40,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:40,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:40,941 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:40,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:40,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:40,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:40,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:40,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:40,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:40,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:40,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:40,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:40,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:40,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,957 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-03-26 13:51:40,957 INFO L142 QuantifierPusher]: treesize reduction 2, result has 94.4 percent of original size [2021-03-26 13:51:40,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:40,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:40,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:40,972 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:40,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:40,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:40,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:40,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:40,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955062821] [2021-03-26 13:51:40,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:40,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:40,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:40,995 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 130 [2021-03-26 13:51:40,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 114 transitions, 1586 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:40,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:40,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 130 [2021-03-26 13:51:40,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:41,268 INFO L129 PetriNetUnfolder]: 98/221 cut-off events. [2021-03-26 13:51:41,268 INFO L130 PetriNetUnfolder]: For 9428/9428 co-relation queries the response was YES. [2021-03-26 13:51:41,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 221 events. 98/221 cut-off events. For 9428/9428 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1093 event pairs, 1 based on Foata normal form. 2/223 useless extension candidates. Maximal degree in co-relation 2114. Up to 199 conditions per place. [2021-03-26 13:51:41,270 INFO L132 encePairwiseOnDemand]: 86/130 looper letters, 68 selfloop transitions, 44 changer transitions 2/118 dead transitions. [2021-03-26 13:51:41,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 2014 flow [2021-03-26 13:51:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2021-03-26 13:51:41,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1375 [2021-03-26 13:51:41,271 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 143 transitions. [2021-03-26 13:51:41,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 143 transitions. [2021-03-26 13:51:41,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:41,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 143 transitions. [2021-03-26 13:51:41,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 130.0) internal successors, (1170), 9 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 130.0) internal successors, (1170), 9 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,272 INFO L185 Difference]: Start difference. First operand has 126 places, 114 transitions, 1586 flow. Second operand 8 states and 143 transitions. [2021-03-26 13:51:41,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 2014 flow [2021-03-26 13:51:41,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 118 transitions, 1749 flow, removed 78 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:41,300 INFO L241 Difference]: Finished difference. Result has 134 places, 116 transitions, 1595 flow [2021-03-26 13:51:41,300 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1595, PETRI_PLACES=134, PETRI_TRANSITIONS=116} [2021-03-26 13:51:41,300 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 119 predicate places. [2021-03-26 13:51:41,300 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:41,300 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 116 transitions, 1595 flow [2021-03-26 13:51:41,300 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 116 transitions, 1595 flow [2021-03-26 13:51:41,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 116 transitions, 1595 flow [2021-03-26 13:51:41,315 INFO L129 PetriNetUnfolder]: 96/214 cut-off events. [2021-03-26 13:51:41,315 INFO L130 PetriNetUnfolder]: For 8985/8991 co-relation queries the response was YES. [2021-03-26 13:51:41,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 214 events. 96/214 cut-off events. For 8985/8991 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1062 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 1743. Up to 143 conditions per place. [2021-03-26 13:51:41,317 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:41,393 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:41,393 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:41,393 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 93 [2021-03-26 13:51:41,393 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 114 transitions, 1499 flow [2021-03-26 13:51:41,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:41,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:41,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-03-26 13:51:41,594 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1948076739, now seen corresponding path program 1 times [2021-03-26 13:51:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747236216] [2021-03-26 13:51:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:41,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,606 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:41,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:41,629 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:41,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:41,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747236216] [2021-03-26 13:51:41,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370170795] [2021-03-26 13:51:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:41,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:41,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:41,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:41,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:41,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:41,702 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:41,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:41,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:41,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:41,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:41,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:41,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:41,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:41,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:41,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:41,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:41,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224516429] [2021-03-26 13:51:41,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:41,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:41,717 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 132 [2021-03-26 13:51:41,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 114 transitions, 1499 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:41,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 132 [2021-03-26 13:51:41,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:41,909 INFO L129 PetriNetUnfolder]: 99/221 cut-off events. [2021-03-26 13:51:41,909 INFO L130 PetriNetUnfolder]: For 13458/13463 co-relation queries the response was YES. [2021-03-26 13:51:41,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 221 events. 99/221 cut-off events. For 13458/13463 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1087 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 2137. Up to 148 conditions per place. [2021-03-26 13:51:41,920 INFO L132 encePairwiseOnDemand]: 89/132 looper letters, 32 selfloop transitions, 78 changer transitions 2/118 dead transitions. [2021-03-26 13:51:41,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 118 transitions, 2075 flow [2021-03-26 13:51:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-03-26 13:51:41,924 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.17676767676767677 [2021-03-26 13:51:41,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-03-26 13:51:41,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-03-26 13:51:41,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:41,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-03-26 13:51:41,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:41,925 INFO L185 Difference]: Start difference. First operand has 130 places, 114 transitions, 1499 flow. Second operand 6 states and 140 transitions. [2021-03-26 13:51:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 118 transitions, 2075 flow [2021-03-26 13:51:41,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 118 transitions, 1852 flow, removed 49 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:41,960 INFO L241 Difference]: Finished difference. Result has 129 places, 116 transitions, 1621 flow [2021-03-26 13:51:41,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1621, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2021-03-26 13:51:41,960 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 114 predicate places. [2021-03-26 13:51:41,960 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:41,960 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 116 transitions, 1621 flow [2021-03-26 13:51:41,960 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 116 transitions, 1621 flow [2021-03-26 13:51:41,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 128 places, 116 transitions, 1621 flow [2021-03-26 13:51:41,975 INFO L129 PetriNetUnfolder]: 97/216 cut-off events. [2021-03-26 13:51:41,976 INFO L130 PetriNetUnfolder]: For 10960/10961 co-relation queries the response was YES. [2021-03-26 13:51:41,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 216 events. 97/216 cut-off events. For 10960/10961 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1070 event pairs, 1 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 1799. Up to 146 conditions per place. [2021-03-26 13:51:41,978 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:42,021 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:42,021 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:42,021 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 61 [2021-03-26 13:51:42,021 INFO L480 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1622 flow [2021-03-26 13:51:42,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:42,021 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:42,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:42,228 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash 657386248, now seen corresponding path program 1 times [2021-03-26 13:51:42,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:42,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131177945] [2021-03-26 13:51:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:42,233 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:42,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:42,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:42,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:42,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:42,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:42,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131177945] [2021-03-26 13:51:42,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935707666] [2021-03-26 13:51:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-26 13:51:42,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:42,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,281 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:42,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:42,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:42,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:42,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:42,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:42,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:42,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:42,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:42,310 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:42,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:42,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:42,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:42,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-26 13:51:42,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:42,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:42,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:42,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:42,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:42,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:42,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818084776] [2021-03-26 13:51:42,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:42,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:42,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:42,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:42,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 133 [2021-03-26 13:51:42,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:42,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 133 [2021-03-26 13:51:42,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:42,542 INFO L129 PetriNetUnfolder]: 100/225 cut-off events. [2021-03-26 13:51:42,542 INFO L130 PetriNetUnfolder]: For 10011/10051 co-relation queries the response was YES. [2021-03-26 13:51:42,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 225 events. 100/225 cut-off events. For 10011/10051 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1116 event pairs, 1 based on Foata normal form. 42/267 useless extension candidates. Maximal degree in co-relation 2163. Up to 203 conditions per place. [2021-03-26 13:51:42,544 INFO L132 encePairwiseOnDemand]: 88/133 looper letters, 69 selfloop transitions, 45 changer transitions 2/120 dead transitions. [2021-03-26 13:51:42,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 120 transitions, 2058 flow [2021-03-26 13:51:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:51:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:51:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2021-03-26 13:51:42,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.13533834586466165 [2021-03-26 13:51:42,544 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 144 transitions. [2021-03-26 13:51:42,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 144 transitions. [2021-03-26 13:51:42,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:42,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 144 transitions. [2021-03-26 13:51:42,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,545 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,546 INFO L185 Difference]: Start difference. First operand has 128 places, 116 transitions, 1622 flow. Second operand 8 states and 144 transitions. [2021-03-26 13:51:42,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 120 transitions, 2058 flow [2021-03-26 13:51:42,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 120 transitions, 1744 flow, removed 80 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:42,568 INFO L241 Difference]: Finished difference. Result has 135 places, 118 transitions, 1588 flow [2021-03-26 13:51:42,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1588, PETRI_PLACES=135, PETRI_TRANSITIONS=118} [2021-03-26 13:51:42,568 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 120 predicate places. [2021-03-26 13:51:42,568 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:42,568 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 118 transitions, 1588 flow [2021-03-26 13:51:42,568 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 118 transitions, 1588 flow [2021-03-26 13:51:42,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 118 transitions, 1588 flow [2021-03-26 13:51:42,584 INFO L129 PetriNetUnfolder]: 98/218 cut-off events. [2021-03-26 13:51:42,584 INFO L130 PetriNetUnfolder]: For 9254/9260 co-relation queries the response was YES. [2021-03-26 13:51:42,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 218 events. 98/218 cut-off events. For 9254/9260 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1090 event pairs, 0 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1783. Up to 147 conditions per place. [2021-03-26 13:51:42,586 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 13:51:42,666 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:51:42,667 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:42,667 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 99 [2021-03-26 13:51:42,667 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 1490 flow [2021-03-26 13:51:42,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,667 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:42,667 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:42,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:42,867 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:42,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1862275776, now seen corresponding path program 1 times [2021-03-26 13:51:42,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:42,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891814752] [2021-03-26 13:51:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:42,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,880 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:42,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:42,903 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:42,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:42,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891814752] [2021-03-26 13:51:42,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223110831] [2021-03-26 13:51:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:42,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:42,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:42,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:42,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:42,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:42,953 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:42,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:42,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:42,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:42,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:42,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:42,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:42,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:42,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:42,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:42,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:42,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430566780] [2021-03-26 13:51:42,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:42,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:42,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:42,966 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 135 [2021-03-26 13:51:42,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 116 transitions, 1490 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:42,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:42,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 135 [2021-03-26 13:51:42,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:43,151 INFO L129 PetriNetUnfolder]: 101/225 cut-off events. [2021-03-26 13:51:43,151 INFO L130 PetriNetUnfolder]: For 13911/13916 co-relation queries the response was YES. [2021-03-26 13:51:43,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 225 events. 101/225 cut-off events. For 13911/13916 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1112 event pairs, 0 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 2185. Up to 152 conditions per place. [2021-03-26 13:51:43,152 INFO L132 encePairwiseOnDemand]: 91/135 looper letters, 32 selfloop transitions, 80 changer transitions 2/120 dead transitions. [2021-03-26 13:51:43,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 120 transitions, 2078 flow [2021-03-26 13:51:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2021-03-26 13:51:43,153 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.17407407407407408 [2021-03-26 13:51:43,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2021-03-26 13:51:43,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2021-03-26 13:51:43,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:43,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2021-03-26 13:51:43,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,154 INFO L185 Difference]: Start difference. First operand has 131 places, 116 transitions, 1490 flow. Second operand 6 states and 141 transitions. [2021-03-26 13:51:43,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 120 transitions, 2078 flow [2021-03-26 13:51:43,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1892 flow, removed 50 selfloop flow, removed 7 redundant places. [2021-03-26 13:51:43,193 INFO L241 Difference]: Finished difference. Result has 131 places, 118 transitions, 1657 flow [2021-03-26 13:51:43,193 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1657, PETRI_PLACES=131, PETRI_TRANSITIONS=118} [2021-03-26 13:51:43,193 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 116 predicate places. [2021-03-26 13:51:43,193 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:43,193 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 118 transitions, 1657 flow [2021-03-26 13:51:43,193 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 118 transitions, 1657 flow [2021-03-26 13:51:43,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 118 transitions, 1657 flow [2021-03-26 13:51:43,209 INFO L129 PetriNetUnfolder]: 99/220 cut-off events. [2021-03-26 13:51:43,209 INFO L130 PetriNetUnfolder]: For 11467/11467 co-relation queries the response was YES. [2021-03-26 13:51:43,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 220 events. 99/220 cut-off events. For 11467/11467 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1086 event pairs, 1 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 1841. Up to 150 conditions per place. [2021-03-26 13:51:43,210 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:43,249 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:43,250 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:43,250 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-03-26 13:51:43,250 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1658 flow [2021-03-26 13:51:43,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:43,250 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:43,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-03-26 13:51:43,464 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:43,464 INFO L82 PathProgramCache]: Analyzing trace with hash -103287115, now seen corresponding path program 1 times [2021-03-26 13:51:43,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:43,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097537122] [2021-03-26 13:51:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:43,469 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:43,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:43,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:43,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:43,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:43,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097537122] [2021-03-26 13:51:43,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604000817] [2021-03-26 13:51:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:43,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:43,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:43,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:43,513 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:43,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:43,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:43,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:43,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:43,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:43,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:43,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:43,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:43,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:43,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:43,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,534 INFO L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 37 [2021-03-26 13:51:43,535 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-03-26 13:51:43,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:43,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:43,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:51:43,550 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-03-26 13:51:43,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:51:43,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:43,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-26 13:51:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:43,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:43,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:43,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308380895] [2021-03-26 13:51:43,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:43,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:43,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:43,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:43,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 136 [2021-03-26 13:51:43,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1658 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:43,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 136 [2021-03-26 13:51:43,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:43,799 INFO L129 PetriNetUnfolder]: 102/232 cut-off events. [2021-03-26 13:51:43,799 INFO L130 PetriNetUnfolder]: For 10475/10516 co-relation queries the response was YES. [2021-03-26 13:51:43,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 232 events. 102/232 cut-off events. For 10475/10516 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1175 event pairs, 1 based on Foata normal form. 44/276 useless extension candidates. Maximal degree in co-relation 2267. Up to 207 conditions per place. [2021-03-26 13:51:43,801 INFO L132 encePairwiseOnDemand]: 90/136 looper letters, 70 selfloop transitions, 47 changer transitions 3/124 dead transitions. [2021-03-26 13:51:43,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 2210 flow [2021-03-26 13:51:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2021-03-26 13:51:43,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.12352941176470589 [2021-03-26 13:51:43,802 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 168 transitions. [2021-03-26 13:51:43,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 168 transitions. [2021-03-26 13:51:43,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:43,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 168 transitions. [2021-03-26 13:51:43,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,803 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,803 INFO L185 Difference]: Start difference. First operand has 130 places, 118 transitions, 1658 flow. Second operand 10 states and 168 transitions. [2021-03-26 13:51:43,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 2210 flow [2021-03-26 13:51:43,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 124 transitions, 1888 flow, removed 82 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:43,831 INFO L241 Difference]: Finished difference. Result has 141 places, 121 transitions, 1720 flow [2021-03-26 13:51:43,831 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=141, PETRI_TRANSITIONS=121} [2021-03-26 13:51:43,831 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 126 predicate places. [2021-03-26 13:51:43,831 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:43,831 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 121 transitions, 1720 flow [2021-03-26 13:51:43,832 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 121 transitions, 1720 flow [2021-03-26 13:51:43,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 138 places, 121 transitions, 1720 flow [2021-03-26 13:51:43,848 INFO L129 PetriNetUnfolder]: 100/223 cut-off events. [2021-03-26 13:51:43,848 INFO L130 PetriNetUnfolder]: For 9982/9988 co-relation queries the response was YES. [2021-03-26 13:51:43,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 223 events. 100/223 cut-off events. For 9982/9988 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1100 event pairs, 0 based on Foata normal form. 1/224 useless extension candidates. Maximal degree in co-relation 1912. Up to 152 conditions per place. [2021-03-26 13:51:43,849 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:43,969 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:43,969 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:43,970 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 139 [2021-03-26 13:51:43,970 INFO L480 AbstractCegarLoop]: Abstraction has has 135 places, 118 transitions, 1528 flow [2021-03-26 13:51:43,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:43,970 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:43,970 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:44,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-03-26 13:51:44,170 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:44,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1776388323, now seen corresponding path program 1 times [2021-03-26 13:51:44,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:44,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932940115] [2021-03-26 13:51:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:44,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,183 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:44,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:44,207 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:44,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:44,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932940115] [2021-03-26 13:51:44,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088894374] [2021-03-26 13:51:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:44,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:44,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:44,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:44,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:44,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:44,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:44,257 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:44,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:44,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:44,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:44,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:44,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:44,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:44,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:44,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:44,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790122514] [2021-03-26 13:51:44,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:44,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:44,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2021-03-26 13:51:44,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 118 transitions, 1528 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:44,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:44,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2021-03-26 13:51:44,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:44,482 INFO L129 PetriNetUnfolder]: 103/229 cut-off events. [2021-03-26 13:51:44,483 INFO L130 PetriNetUnfolder]: For 14895/14900 co-relation queries the response was YES. [2021-03-26 13:51:44,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 229 events. 103/229 cut-off events. For 14895/14900 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1138 event pairs, 0 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 2278. Up to 156 conditions per place. [2021-03-26 13:51:44,484 INFO L132 encePairwiseOnDemand]: 94/139 looper letters, 32 selfloop transitions, 82 changer transitions 2/122 dead transitions. [2021-03-26 13:51:44,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 122 transitions, 2128 flow [2021-03-26 13:51:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2021-03-26 13:51:44,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.17026378896882494 [2021-03-26 13:51:44,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 142 transitions. [2021-03-26 13:51:44,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 142 transitions. [2021-03-26 13:51:44,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:44,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 142 transitions. [2021-03-26 13:51:44,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:44,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:44,486 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:44,486 INFO L185 Difference]: Start difference. First operand has 135 places, 118 transitions, 1528 flow. Second operand 6 states and 142 transitions. [2021-03-26 13:51:44,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 122 transitions, 2128 flow [2021-03-26 13:51:44,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 1932 flow, removed 54 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:44,514 INFO L241 Difference]: Finished difference. Result has 133 places, 120 transitions, 1693 flow [2021-03-26 13:51:44,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1693, PETRI_PLACES=133, PETRI_TRANSITIONS=120} [2021-03-26 13:51:44,514 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 118 predicate places. [2021-03-26 13:51:44,515 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:44,515 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 120 transitions, 1693 flow [2021-03-26 13:51:44,515 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 120 transitions, 1693 flow [2021-03-26 13:51:44,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 120 transitions, 1693 flow [2021-03-26 13:51:44,531 INFO L129 PetriNetUnfolder]: 102/225 cut-off events. [2021-03-26 13:51:44,531 INFO L130 PetriNetUnfolder]: For 13393/13394 co-relation queries the response was YES. [2021-03-26 13:51:44,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 225 events. 102/225 cut-off events. For 13393/13394 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1121 event pairs, 1 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 1930. Up to 154 conditions per place. [2021-03-26 13:51:44,532 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:44,572 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:44,573 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:44,573 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 58 [2021-03-26 13:51:44,573 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 1694 flow [2021-03-26 13:51:44,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:44,573 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:44,573 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:44,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:44,773 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash -99679521, now seen corresponding path program 1 times [2021-03-26 13:51:44,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:44,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235921401] [2021-03-26 13:51:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:44,780 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:44,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:44,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:44,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:44,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:44,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:44,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235921401] [2021-03-26 13:51:44,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032928568] [2021-03-26 13:51:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:44,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:44,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:44,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:44,827 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:44,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:44,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:44,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:44,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:44,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:44,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:44,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:44,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:44,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:44,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:44,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,843 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-03-26 13:51:44,844 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size [2021-03-26 13:51:44,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:51:44,861 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-03-26 13:51:44,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:44,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:44,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:44,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:44,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842651191] [2021-03-26 13:51:44,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:44,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:44,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 140 [2021-03-26 13:51:44,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 1694 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:44,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:44,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 140 [2021-03-26 13:51:44,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:45,143 INFO L129 PetriNetUnfolder]: 104/236 cut-off events. [2021-03-26 13:51:45,143 INFO L130 PetriNetUnfolder]: For 10765/10765 co-relation queries the response was YES. [2021-03-26 13:51:45,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 236 events. 104/236 cut-off events. For 10765/10765 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1194 event pairs, 1 based on Foata normal form. 3/239 useless extension candidates. Maximal degree in co-relation 2317. Up to 211 conditions per place. [2021-03-26 13:51:45,144 INFO L132 encePairwiseOnDemand]: 93/140 looper letters, 71 selfloop transitions, 48 changer transitions 3/126 dead transitions. [2021-03-26 13:51:45,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 126 transitions, 2256 flow [2021-03-26 13:51:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2021-03-26 13:51:45,145 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.12071428571428572 [2021-03-26 13:51:45,145 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 169 transitions. [2021-03-26 13:51:45,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 169 transitions. [2021-03-26 13:51:45,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:45,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 169 transitions. [2021-03-26 13:51:45,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,146 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,147 INFO L185 Difference]: Start difference. First operand has 132 places, 120 transitions, 1694 flow. Second operand 10 states and 169 transitions. [2021-03-26 13:51:45,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 126 transitions, 2256 flow [2021-03-26 13:51:45,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 126 transitions, 1970 flow, removed 84 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:45,181 INFO L241 Difference]: Finished difference. Result has 144 places, 123 transitions, 1800 flow [2021-03-26 13:51:45,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1800, PETRI_PLACES=144, PETRI_TRANSITIONS=123} [2021-03-26 13:51:45,181 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 129 predicate places. [2021-03-26 13:51:45,181 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:45,181 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 123 transitions, 1800 flow [2021-03-26 13:51:45,181 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 123 transitions, 1800 flow [2021-03-26 13:51:45,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 123 transitions, 1800 flow [2021-03-26 13:51:45,198 INFO L129 PetriNetUnfolder]: 102/227 cut-off events. [2021-03-26 13:51:45,198 INFO L130 PetriNetUnfolder]: For 10521/10527 co-relation queries the response was YES. [2021-03-26 13:51:45,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 227 events. 102/227 cut-off events. For 10521/10527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1136 event pairs, 0 based on Foata normal form. 1/228 useless extension candidates. Maximal degree in co-relation 1956. Up to 156 conditions per place. [2021-03-26 13:51:45,200 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:45,313 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:45,313 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:45,313 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 132 [2021-03-26 13:51:45,314 INFO L480 AbstractCegarLoop]: Abstraction has has 138 places, 120 transitions, 1604 flow [2021-03-26 13:51:45,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,314 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:45,314 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:45,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:45,514 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1661871719, now seen corresponding path program 1 times [2021-03-26 13:51:45,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:45,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004169327] [2021-03-26 13:51:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:45,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,528 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:45,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:45,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:45,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:45,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004169327] [2021-03-26 13:51:45,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134831944] [2021-03-26 13:51:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:45,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:45,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:45,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:45,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:45,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:45,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:45,597 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:45,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:45,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:45,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:45,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:45,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:45,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:45,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:45,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:45,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:45,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:45,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386996851] [2021-03-26 13:51:45,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:45,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:45,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:45,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:45,610 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 143 [2021-03-26 13:51:45,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 120 transitions, 1604 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:45,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 143 [2021-03-26 13:51:45,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:45,824 INFO L129 PetriNetUnfolder]: 105/233 cut-off events. [2021-03-26 13:51:45,824 INFO L130 PetriNetUnfolder]: For 15713/15718 co-relation queries the response was YES. [2021-03-26 13:51:45,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 233 events. 105/233 cut-off events. For 15713/15718 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1169 event pairs, 0 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 2329. Up to 160 conditions per place. [2021-03-26 13:51:45,826 INFO L132 encePairwiseOnDemand]: 97/143 looper letters, 32 selfloop transitions, 84 changer transitions 2/124 dead transitions. [2021-03-26 13:51:45,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 124 transitions, 2216 flow [2021-03-26 13:51:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2021-03-26 13:51:45,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16666666666666666 [2021-03-26 13:51:45,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 143 transitions. [2021-03-26 13:51:45,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 143 transitions. [2021-03-26 13:51:45,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:45,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 143 transitions. [2021-03-26 13:51:45,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,828 INFO L185 Difference]: Start difference. First operand has 138 places, 120 transitions, 1604 flow. Second operand 6 states and 143 transitions. [2021-03-26 13:51:45,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 124 transitions, 2216 flow [2021-03-26 13:51:45,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 124 transitions, 1972 flow, removed 55 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:45,862 INFO L241 Difference]: Finished difference. Result has 135 places, 122 transitions, 1729 flow [2021-03-26 13:51:45,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1729, PETRI_PLACES=135, PETRI_TRANSITIONS=122} [2021-03-26 13:51:45,862 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 120 predicate places. [2021-03-26 13:51:45,862 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:45,862 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 122 transitions, 1729 flow [2021-03-26 13:51:45,862 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 122 transitions, 1729 flow [2021-03-26 13:51:45,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 122 transitions, 1729 flow [2021-03-26 13:51:45,883 INFO L129 PetriNetUnfolder]: 103/228 cut-off events. [2021-03-26 13:51:45,883 INFO L130 PetriNetUnfolder]: For 12764/12766 co-relation queries the response was YES. [2021-03-26 13:51:45,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 228 events. 103/228 cut-off events. For 12764/12766 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1172 event pairs, 1 based on Foata normal form. 2/230 useless extension candidates. Maximal degree in co-relation 1925. Up to 158 conditions per place. [2021-03-26 13:51:45,884 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:45,924 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:45,924 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:45,924 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-03-26 13:51:45,924 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 122 transitions, 1730 flow [2021-03-26 13:51:45,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:45,925 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:45,925 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:46,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:46,139 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:46,139 INFO L82 PathProgramCache]: Analyzing trace with hash -95898947, now seen corresponding path program 1 times [2021-03-26 13:51:46,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:46,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704084650] [2021-03-26 13:51:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:46,144 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:46,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:46,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:46,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:46,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:46,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:46,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704084650] [2021-03-26 13:51:46,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258742871] [2021-03-26 13:51:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:46,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:46,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,190 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:46,191 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-03-26 13:51:46,191 INFO L142 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-03-26 13:51:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:46,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:46,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:46,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:46,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:46,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:46,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:46,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:46,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:46,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,206 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.4 percent of original size 39 [2021-03-26 13:51:46,206 INFO L142 QuantifierPusher]: treesize reduction -2, result has 105.3 percent of original size [2021-03-26 13:51:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:51:46,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:51:46,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:51:46,223 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.2 percent of original size [2021-03-26 13:51:46,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-26 13:51:46,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:46,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:46,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:46,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731176227] [2021-03-26 13:51:46,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:46,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:46,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:46,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:46,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 144 [2021-03-26 13:51:46,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 122 transitions, 1730 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:46,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:46,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 144 [2021-03-26 13:51:46,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:46,546 INFO L129 PetriNetUnfolder]: 106/240 cut-off events. [2021-03-26 13:51:46,546 INFO L130 PetriNetUnfolder]: For 11230/11230 co-relation queries the response was YES. [2021-03-26 13:51:46,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 240 events. 106/240 cut-off events. For 11230/11230 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1213 event pairs, 1 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 2367. Up to 215 conditions per place. [2021-03-26 13:51:46,548 INFO L132 encePairwiseOnDemand]: 96/144 looper letters, 72 selfloop transitions, 49 changer transitions 3/128 dead transitions. [2021-03-26 13:51:46,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 128 transitions, 2302 flow [2021-03-26 13:51:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2021-03-26 13:51:46,549 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.11805555555555555 [2021-03-26 13:51:46,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 170 transitions. [2021-03-26 13:51:46,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 170 transitions. [2021-03-26 13:51:46,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:46,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 170 transitions. [2021-03-26 13:51:46,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:46,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 144.0) internal successors, (1584), 11 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:46,550 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 144.0) internal successors, (1584), 11 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:46,550 INFO L185 Difference]: Start difference. First operand has 134 places, 122 transitions, 1730 flow. Second operand 10 states and 170 transitions. [2021-03-26 13:51:46,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 128 transitions, 2302 flow [2021-03-26 13:51:46,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 128 transitions, 1964 flow, removed 86 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:46,579 INFO L241 Difference]: Finished difference. Result has 145 places, 125 transitions, 1792 flow [2021-03-26 13:51:46,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1792, PETRI_PLACES=145, PETRI_TRANSITIONS=125} [2021-03-26 13:51:46,579 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 130 predicate places. [2021-03-26 13:51:46,579 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:46,579 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 125 transitions, 1792 flow [2021-03-26 13:51:46,579 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 125 transitions, 1792 flow [2021-03-26 13:51:46,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 125 transitions, 1792 flow [2021-03-26 13:51:46,596 INFO L129 PetriNetUnfolder]: 104/231 cut-off events. [2021-03-26 13:51:46,596 INFO L130 PetriNetUnfolder]: For 11262/11333 co-relation queries the response was YES. [2021-03-26 13:51:46,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 231 events. 104/231 cut-off events. For 11262/11333 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1176 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 1998. Up to 160 conditions per place. [2021-03-26 13:51:46,598 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:46,710 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:46,710 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:46,710 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 131 [2021-03-26 13:51:46,711 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1592 flow [2021-03-26 13:51:46,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:46,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:46,711 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:46,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:46,911 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:46,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1547355115, now seen corresponding path program 1 times [2021-03-26 13:51:46,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:46,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366177981] [2021-03-26 13:51:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:46,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,922 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:46,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:46,944 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:46,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:46,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366177981] [2021-03-26 13:51:46,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95294321] [2021-03-26 13:51:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:46,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:46,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:46,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:46,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:46,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:46,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:46,991 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:46,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:46,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:46,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:46,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:46,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:46,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:46,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:46,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:46,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:47,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:47,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:47,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309718244] [2021-03-26 13:51:47,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:47,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:47,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 147 [2021-03-26 13:51:47,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1592 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:47,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 147 [2021-03-26 13:51:47,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:47,213 INFO L129 PetriNetUnfolder]: 106/236 cut-off events. [2021-03-26 13:51:47,214 INFO L130 PetriNetUnfolder]: For 13959/13964 co-relation queries the response was YES. [2021-03-26 13:51:47,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2419 conditions, 236 events. 106/236 cut-off events. For 13959/13964 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1197 event pairs, 0 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 2329. Up to 164 conditions per place. [2021-03-26 13:51:47,215 INFO L132 encePairwiseOnDemand]: 100/147 looper letters, 32 selfloop transitions, 86 changer transitions 2/126 dead transitions. [2021-03-26 13:51:47,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 126 transitions, 2216 flow [2021-03-26 13:51:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2021-03-26 13:51:47,216 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16326530612244897 [2021-03-26 13:51:47,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2021-03-26 13:51:47,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2021-03-26 13:51:47,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:47,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2021-03-26 13:51:47,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,217 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,217 INFO L185 Difference]: Start difference. First operand has 139 places, 122 transitions, 1592 flow. Second operand 6 states and 144 transitions. [2021-03-26 13:51:47,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 126 transitions, 2216 flow [2021-03-26 13:51:47,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 126 transitions, 2012 flow, removed 56 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:47,250 INFO L241 Difference]: Finished difference. Result has 137 places, 124 transitions, 1765 flow [2021-03-26 13:51:47,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1765, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2021-03-26 13:51:47,251 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 122 predicate places. [2021-03-26 13:51:47,251 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:47,251 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 124 transitions, 1765 flow [2021-03-26 13:51:47,251 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 124 transitions, 1765 flow [2021-03-26 13:51:47,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 124 transitions, 1765 flow [2021-03-26 13:51:47,268 INFO L129 PetriNetUnfolder]: 105/232 cut-off events. [2021-03-26 13:51:47,268 INFO L130 PetriNetUnfolder]: For 13373/13374 co-relation queries the response was YES. [2021-03-26 13:51:47,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 232 events. 105/232 cut-off events. For 13373/13374 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1160 event pairs, 1 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 1967. Up to 162 conditions per place. [2021-03-26 13:51:47,270 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:47,310 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:47,311 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:47,311 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 60 [2021-03-26 13:51:47,311 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1766 flow [2021-03-26 13:51:47,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:47,311 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:47,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:47,516 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:47,516 INFO L82 PathProgramCache]: Analyzing trace with hash -92204863, now seen corresponding path program 1 times [2021-03-26 13:51:47,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:47,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638598999] [2021-03-26 13:51:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:47,522 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:47,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:47,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:47,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:47,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:47,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:47,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638598999] [2021-03-26 13:51:47,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141698106] [2021-03-26 13:51:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:47,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:47,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:47,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:47,568 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:47,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:47,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:47,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:47,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:47,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:47,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:47,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:47,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:47,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:47,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:47,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,594 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-03-26 13:51:47,594 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size [2021-03-26 13:51:47,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:47,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:47,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:47,608 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:47,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:47,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:47,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:47,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:47,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:47,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067806165] [2021-03-26 13:51:47,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:47,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:47,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:47,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:47,630 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 148 [2021-03-26 13:51:47,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1766 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:47,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 148 [2021-03-26 13:51:47,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:47,880 INFO L129 PetriNetUnfolder]: 108/244 cut-off events. [2021-03-26 13:51:47,880 INFO L130 PetriNetUnfolder]: For 11705/11705 co-relation queries the response was YES. [2021-03-26 13:51:47,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 244 events. 108/244 cut-off events. For 11705/11705 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1239 event pairs, 1 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 2417. Up to 219 conditions per place. [2021-03-26 13:51:47,882 INFO L132 encePairwiseOnDemand]: 99/148 looper letters, 73 selfloop transitions, 50 changer transitions 3/130 dead transitions. [2021-03-26 13:51:47,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 130 transitions, 2348 flow [2021-03-26 13:51:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2021-03-26 13:51:47,883 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.11554054054054054 [2021-03-26 13:51:47,883 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 171 transitions. [2021-03-26 13:51:47,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 171 transitions. [2021-03-26 13:51:47,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:47,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 171 transitions. [2021-03-26 13:51:47,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,884 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:47,884 INFO L185 Difference]: Start difference. First operand has 136 places, 124 transitions, 1766 flow. Second operand 10 states and 171 transitions. [2021-03-26 13:51:47,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 130 transitions, 2348 flow [2021-03-26 13:51:47,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 130 transitions, 2002 flow, removed 88 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:47,922 INFO L241 Difference]: Finished difference. Result has 147 places, 127 transitions, 1828 flow [2021-03-26 13:51:47,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1828, PETRI_PLACES=147, PETRI_TRANSITIONS=127} [2021-03-26 13:51:47,922 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 132 predicate places. [2021-03-26 13:51:47,922 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:47,922 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 127 transitions, 1828 flow [2021-03-26 13:51:47,922 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 127 transitions, 1828 flow [2021-03-26 13:51:47,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 127 transitions, 1828 flow [2021-03-26 13:51:47,940 INFO L129 PetriNetUnfolder]: 106/235 cut-off events. [2021-03-26 13:51:47,940 INFO L130 PetriNetUnfolder]: For 11975/12056 co-relation queries the response was YES. [2021-03-26 13:51:47,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 235 events. 106/235 cut-off events. For 11975/12056 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1204 event pairs, 0 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 2041. Up to 164 conditions per place. [2021-03-26 13:51:47,942 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:48,056 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:48,056 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:48,056 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 134 [2021-03-26 13:51:48,056 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1624 flow [2021-03-26 13:51:48,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:48,056 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:48,056 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:48,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-03-26 13:51:48,260 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:48,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1432752021, now seen corresponding path program 1 times [2021-03-26 13:51:48,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:48,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881365193] [2021-03-26 13:51:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:48,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,278 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:48,302 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:48,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:48,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881365193] [2021-03-26 13:51:48,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436904700] [2021-03-26 13:51:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:48,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:48,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:48,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:48,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:48,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:48,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:48,355 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:48,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:48,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:48,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:48,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:48,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:48,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:48,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:48,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:48,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75963614] [2021-03-26 13:51:48,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:48,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:48,370 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 151 [2021-03-26 13:51:48,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1624 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:48,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:48,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 151 [2021-03-26 13:51:48,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:48,597 INFO L129 PetriNetUnfolder]: 109/241 cut-off events. [2021-03-26 13:51:48,597 INFO L130 PetriNetUnfolder]: For 16894/16900 co-relation queries the response was YES. [2021-03-26 13:51:48,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 241 events. 109/241 cut-off events. For 16894/16900 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1225 event pairs, 0 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 2428. Up to 168 conditions per place. [2021-03-26 13:51:48,599 INFO L132 encePairwiseOnDemand]: 103/151 looper letters, 32 selfloop transitions, 88 changer transitions 2/128 dead transitions. [2021-03-26 13:51:48,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 128 transitions, 2260 flow [2021-03-26 13:51:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2021-03-26 13:51:48,600 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1600441501103753 [2021-03-26 13:51:48,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 145 transitions. [2021-03-26 13:51:48,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 145 transitions. [2021-03-26 13:51:48,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:48,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 145 transitions. [2021-03-26 13:51:48,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:48,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:48,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:48,601 INFO L185 Difference]: Start difference. First operand has 141 places, 124 transitions, 1624 flow. Second operand 6 states and 145 transitions. [2021-03-26 13:51:48,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 128 transitions, 2260 flow [2021-03-26 13:51:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 2052 flow, removed 57 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:48,647 INFO L241 Difference]: Finished difference. Result has 139 places, 126 transitions, 1801 flow [2021-03-26 13:51:48,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1801, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2021-03-26 13:51:48,647 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 124 predicate places. [2021-03-26 13:51:48,647 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:48,647 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 126 transitions, 1801 flow [2021-03-26 13:51:48,647 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 126 transitions, 1801 flow [2021-03-26 13:51:48,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 138 places, 126 transitions, 1801 flow [2021-03-26 13:51:48,665 INFO L129 PetriNetUnfolder]: 107/236 cut-off events. [2021-03-26 13:51:48,665 INFO L130 PetriNetUnfolder]: For 13945/13946 co-relation queries the response was YES. [2021-03-26 13:51:48,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 236 events. 107/236 cut-off events. For 13945/13946 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1193 event pairs, 1 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 2009. Up to 166 conditions per place. [2021-03-26 13:51:48,667 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:48,706 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:48,706 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:48,707 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 60 [2021-03-26 13:51:48,707 INFO L480 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 1802 flow [2021-03-26 13:51:48,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:48,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:48,707 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:48,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:48,920 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:48,920 INFO L82 PathProgramCache]: Analyzing trace with hash -88510779, now seen corresponding path program 1 times [2021-03-26 13:51:48,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:48,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967271998] [2021-03-26 13:51:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:48,925 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:48,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:48,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:48,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:48,945 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:48,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:48,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967271998] [2021-03-26 13:51:48,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934680360] [2021-03-26 13:51:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:48,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:48,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,970 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:48,971 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.3 percent of original size 41 [2021-03-26 13:51:48,971 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-03-26 13:51:48,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:48,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:48,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:48,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:48,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:48,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:48,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:48,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:48,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:48,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,986 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.3 percent of original size 49 [2021-03-26 13:51:48,987 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.2 percent of original size [2021-03-26 13:51:48,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:48,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:48,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:48,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:49,004 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:49,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:49,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:49,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:49,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:49,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092911342] [2021-03-26 13:51:49,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:49,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:49,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:49,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:49,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 152 [2021-03-26 13:51:49,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 1802 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:49,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:49,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 152 [2021-03-26 13:51:49,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:49,352 INFO L129 PetriNetUnfolder]: 110/248 cut-off events. [2021-03-26 13:51:49,352 INFO L130 PetriNetUnfolder]: For 12190/12190 co-relation queries the response was YES. [2021-03-26 13:51:49,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 248 events. 110/248 cut-off events. For 12190/12190 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1277 event pairs, 1 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 2467. Up to 223 conditions per place. [2021-03-26 13:51:49,354 INFO L132 encePairwiseOnDemand]: 102/152 looper letters, 74 selfloop transitions, 51 changer transitions 3/132 dead transitions. [2021-03-26 13:51:49,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 2394 flow [2021-03-26 13:51:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2021-03-26 13:51:49,355 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.11315789473684211 [2021-03-26 13:51:49,355 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 172 transitions. [2021-03-26 13:51:49,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 172 transitions. [2021-03-26 13:51:49,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:49,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 172 transitions. [2021-03-26 13:51:49,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:49,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:49,356 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:49,356 INFO L185 Difference]: Start difference. First operand has 138 places, 126 transitions, 1802 flow. Second operand 10 states and 172 transitions. [2021-03-26 13:51:49,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 2394 flow [2021-03-26 13:51:49,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 132 transitions, 2087 flow, removed 90 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:49,387 INFO L241 Difference]: Finished difference. Result has 150 places, 129 transitions, 1911 flow [2021-03-26 13:51:49,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1911, PETRI_PLACES=150, PETRI_TRANSITIONS=129} [2021-03-26 13:51:49,388 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 135 predicate places. [2021-03-26 13:51:49,388 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:49,388 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 129 transitions, 1911 flow [2021-03-26 13:51:49,388 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 129 transitions, 1911 flow [2021-03-26 13:51:49,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 129 transitions, 1911 flow [2021-03-26 13:51:49,406 INFO L129 PetriNetUnfolder]: 108/239 cut-off events. [2021-03-26 13:51:49,406 INFO L130 PetriNetUnfolder]: For 12584/12667 co-relation queries the response was YES. [2021-03-26 13:51:49,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 239 events. 108/239 cut-off events. For 12584/12667 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1239 event pairs, 0 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 2085. Up to 168 conditions per place. [2021-03-26 13:51:49,408 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:49,521 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:49,521 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:49,521 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 133 [2021-03-26 13:51:49,522 INFO L480 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 1703 flow [2021-03-26 13:51:49,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:49,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:49,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:49,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-03-26 13:51:49,722 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:49,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1318235417, now seen corresponding path program 1 times [2021-03-26 13:51:49,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:49,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128505925] [2021-03-26 13:51:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:49,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,733 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:49,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:49,756 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128505925] [2021-03-26 13:51:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734606163] [2021-03-26 13:51:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:49,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:49,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:49,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:49,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:49,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:49,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:49,812 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:49,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:49,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:49,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:49,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:49,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:49,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:49,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:49,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:49,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077438024] [2021-03-26 13:51:49,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:49,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:49,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:49,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:49,826 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 155 [2021-03-26 13:51:49,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 1703 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:49,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:49,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 155 [2021-03-26 13:51:49,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:50,051 INFO L129 PetriNetUnfolder]: 110/244 cut-off events. [2021-03-26 13:51:50,051 INFO L130 PetriNetUnfolder]: For 15451/15502 co-relation queries the response was YES. [2021-03-26 13:51:50,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 244 events. 110/244 cut-off events. For 15451/15502 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1237 event pairs, 0 based on Foata normal form. 46/290 useless extension candidates. Maximal degree in co-relation 2428. Up to 172 conditions per place. [2021-03-26 13:51:50,053 INFO L132 encePairwiseOnDemand]: 106/155 looper letters, 32 selfloop transitions, 90 changer transitions 2/130 dead transitions. [2021-03-26 13:51:50,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 130 transitions, 2351 flow [2021-03-26 13:51:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2021-03-26 13:51:50,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.15698924731182795 [2021-03-26 13:51:50,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 146 transitions. [2021-03-26 13:51:50,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 146 transitions. [2021-03-26 13:51:50,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:50,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 146 transitions. [2021-03-26 13:51:50,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,054 INFO L185 Difference]: Start difference. First operand has 144 places, 126 transitions, 1703 flow. Second operand 6 states and 146 transitions. [2021-03-26 13:51:50,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 130 transitions, 2351 flow [2021-03-26 13:51:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 130 transitions, 2092 flow, removed 58 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:50,093 INFO L241 Difference]: Finished difference. Result has 141 places, 128 transitions, 1837 flow [2021-03-26 13:51:50,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1837, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2021-03-26 13:51:50,094 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 126 predicate places. [2021-03-26 13:51:50,094 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:50,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 128 transitions, 1837 flow [2021-03-26 13:51:50,094 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 128 transitions, 1837 flow [2021-03-26 13:51:50,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 128 transitions, 1837 flow [2021-03-26 13:51:50,112 INFO L129 PetriNetUnfolder]: 110/241 cut-off events. [2021-03-26 13:51:50,112 INFO L130 PetriNetUnfolder]: For 16272/16276 co-relation queries the response was YES. [2021-03-26 13:51:50,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 241 events. 110/241 cut-off events. For 16272/16276 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1216 event pairs, 1 based on Foata normal form. 2/243 useless extension candidates. Maximal degree in co-relation 2102. Up to 170 conditions per place. [2021-03-26 13:51:50,113 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:50,154 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:50,154 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:50,154 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 60 [2021-03-26 13:51:50,154 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 1838 flow [2021-03-26 13:51:50,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,154 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:50,154 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:50,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-03-26 13:51:50,355 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash -84816695, now seen corresponding path program 1 times [2021-03-26 13:51:50,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:50,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903019936] [2021-03-26 13:51:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:50,366 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:50,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:50,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:50,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:50,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:50,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:50,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903019936] [2021-03-26 13:51:50,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175753973] [2021-03-26 13:51:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:50,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:50,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:50,410 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:50,411 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-03-26 13:51:50,411 INFO L142 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-03-26 13:51:50,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:50,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:50,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:50,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:50,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:50,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:50,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:50,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:51:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,426 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.7 percent of original size 45 [2021-03-26 13:51:50,426 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.5 percent of original size [2021-03-26 13:51:50,427 INFO L147 QuantifierPusher]: treesize reduction -1, result has 101.4 percent of original size 73 [2021-03-26 13:51:50,427 INFO L142 QuantifierPusher]: treesize reduction -1, result has 101.4 percent of original size [2021-03-26 13:51:50,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:51:50,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-26 13:51:50,444 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-03-26 13:51:50,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-26 13:51:50,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:50,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-26 13:51:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:50,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:50,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:50,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086663882] [2021-03-26 13:51:50,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:50,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:50,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:50,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:50,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 156 [2021-03-26 13:51:50,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 1838 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:50,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 156 [2021-03-26 13:51:50,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:50,907 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-03-26 13:51:50,967 INFO L129 PetriNetUnfolder]: 112/252 cut-off events. [2021-03-26 13:51:50,967 INFO L130 PetriNetUnfolder]: For 12833/12879 co-relation queries the response was YES. [2021-03-26 13:51:50,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2597 conditions, 252 events. 112/252 cut-off events. For 12833/12879 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1287 event pairs, 1 based on Foata normal form. 49/301 useless extension candidates. Maximal degree in co-relation 2517. Up to 227 conditions per place. [2021-03-26 13:51:50,968 INFO L132 encePairwiseOnDemand]: 105/156 looper letters, 75 selfloop transitions, 52 changer transitions 3/134 dead transitions. [2021-03-26 13:51:50,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 2440 flow [2021-03-26 13:51:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2021-03-26 13:51:50,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.11089743589743589 [2021-03-26 13:51:50,970 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 173 transitions. [2021-03-26 13:51:50,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 173 transitions. [2021-03-26 13:51:50,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:50,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 173 transitions. [2021-03-26 13:51:50,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,971 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:50,971 INFO L185 Difference]: Start difference. First operand has 140 places, 128 transitions, 1838 flow. Second operand 10 states and 173 transitions. [2021-03-26 13:51:50,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 2440 flow [2021-03-26 13:51:51,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 2126 flow, removed 92 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:51,003 INFO L241 Difference]: Finished difference. Result has 152 places, 131 transitions, 1948 flow [2021-03-26 13:51:51,003 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1948, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2021-03-26 13:51:51,003 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 137 predicate places. [2021-03-26 13:51:51,003 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:51,003 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 131 transitions, 1948 flow [2021-03-26 13:51:51,003 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 131 transitions, 1948 flow [2021-03-26 13:51:51,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 131 transitions, 1948 flow [2021-03-26 13:51:51,022 INFO L129 PetriNetUnfolder]: 110/243 cut-off events. [2021-03-26 13:51:51,022 INFO L130 PetriNetUnfolder]: For 13011/13026 co-relation queries the response was YES. [2021-03-26 13:51:51,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2216 conditions, 243 events. 110/243 cut-off events. For 13011/13026 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1261 event pairs, 0 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 2128. Up to 172 conditions per place. [2021-03-26 13:51:51,024 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:51,143 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:51,143 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:51,143 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 140 [2021-03-26 13:51:51,143 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 128 transitions, 1736 flow [2021-03-26 13:51:51,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:51,143 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:51,143 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:51,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:51,344 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1203805303, now seen corresponding path program 1 times [2021-03-26 13:51:51,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:51,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132434558] [2021-03-26 13:51:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:51,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,354 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:51,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:51,379 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:51,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:51,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132434558] [2021-03-26 13:51:51,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933774308] [2021-03-26 13:51:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:51,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:51,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:51,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:51,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:51,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:51,431 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:51,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:51,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:51,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:51,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:51,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:51,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:51,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:51,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:51,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699214952] [2021-03-26 13:51:51,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:51,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:51,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:51,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:51,446 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 159 [2021-03-26 13:51:51,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 128 transitions, 1736 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:51,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:51,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 159 [2021-03-26 13:51:51,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:51,660 INFO L129 PetriNetUnfolder]: 113/249 cut-off events. [2021-03-26 13:51:51,660 INFO L130 PetriNetUnfolder]: For 18486/18492 co-relation queries the response was YES. [2021-03-26 13:51:51,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 249 events. 113/249 cut-off events. For 18486/18492 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1267 event pairs, 0 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 2529. Up to 176 conditions per place. [2021-03-26 13:51:51,661 INFO L132 encePairwiseOnDemand]: 109/159 looper letters, 32 selfloop transitions, 92 changer transitions 2/132 dead transitions. [2021-03-26 13:51:51,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 132 transitions, 2396 flow [2021-03-26 13:51:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2021-03-26 13:51:51,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1540880503144654 [2021-03-26 13:51:51,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2021-03-26 13:51:51,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2021-03-26 13:51:51,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:51,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2021-03-26 13:51:51,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:51,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:51,663 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:51,663 INFO L185 Difference]: Start difference. First operand has 146 places, 128 transitions, 1736 flow. Second operand 6 states and 147 transitions. [2021-03-26 13:51:51,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 132 transitions, 2396 flow [2021-03-26 13:51:51,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 2132 flow, removed 59 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:51,701 INFO L241 Difference]: Finished difference. Result has 143 places, 130 transitions, 1873 flow [2021-03-26 13:51:51,701 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1873, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2021-03-26 13:51:51,701 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 128 predicate places. [2021-03-26 13:51:51,701 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:51,701 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 130 transitions, 1873 flow [2021-03-26 13:51:51,701 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 130 transitions, 1873 flow [2021-03-26 13:51:51,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 130 transitions, 1873 flow [2021-03-26 13:51:51,720 INFO L129 PetriNetUnfolder]: 111/244 cut-off events. [2021-03-26 13:51:51,720 INFO L130 PetriNetUnfolder]: For 15605/15608 co-relation queries the response was YES. [2021-03-26 13:51:51,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 244 events. 111/244 cut-off events. For 15605/15608 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1264 event pairs, 1 based on Foata normal form. 2/246 useless extension candidates. Maximal degree in co-relation 2093. Up to 174 conditions per place. [2021-03-26 13:51:51,721 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:51,763 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:51,763 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:51,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-03-26 13:51:51,763 INFO L480 AbstractCegarLoop]: Abstraction has has 142 places, 130 transitions, 1874 flow [2021-03-26 13:51:51,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:51,763 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:51,763 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:51,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:51,963 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash -81122611, now seen corresponding path program 1 times [2021-03-26 13:51:51,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:51,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761131716] [2021-03-26 13:51:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:51,976 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:51,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:51,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:51,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:51,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:51,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:51,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:51,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:52,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761131716] [2021-03-26 13:51:52,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539986057] [2021-03-26 13:51:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:52,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:52,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:52,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,027 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:52,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:52,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:52,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:52,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:52,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:52,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:52,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:52,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:52,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:52,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:52,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,043 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-03-26 13:51:52,043 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size [2021-03-26 13:51:52,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:52,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:52,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:52,058 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:52,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:52,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:52,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:52,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:52,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305192452] [2021-03-26 13:51:52,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:52,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:52,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:52,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 160 [2021-03-26 13:51:52,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 130 transitions, 1874 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:52,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:52,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 160 [2021-03-26 13:51:52,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:52,364 INFO L129 PetriNetUnfolder]: 114/256 cut-off events. [2021-03-26 13:51:52,364 INFO L130 PetriNetUnfolder]: For 13190/13190 co-relation queries the response was YES. [2021-03-26 13:51:52,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 256 events. 114/256 cut-off events. For 13190/13190 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1322 event pairs, 1 based on Foata normal form. 3/259 useless extension candidates. Maximal degree in co-relation 2567. Up to 231 conditions per place. [2021-03-26 13:51:52,366 INFO L132 encePairwiseOnDemand]: 108/160 looper letters, 76 selfloop transitions, 53 changer transitions 3/136 dead transitions. [2021-03-26 13:51:52,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 136 transitions, 2486 flow [2021-03-26 13:51:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2021-03-26 13:51:52,367 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.10875 [2021-03-26 13:51:52,367 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 174 transitions. [2021-03-26 13:51:52,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 174 transitions. [2021-03-26 13:51:52,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:52,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 174 transitions. [2021-03-26 13:51:52,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.4) internal successors, (174), 10 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:52,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:52,368 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:52,368 INFO L185 Difference]: Start difference. First operand has 142 places, 130 transitions, 1874 flow. Second operand 10 states and 174 transitions. [2021-03-26 13:51:52,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 136 transitions, 2486 flow [2021-03-26 13:51:52,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 136 transitions, 2116 flow, removed 94 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:52,407 INFO L241 Difference]: Finished difference. Result has 153 places, 133 transitions, 1936 flow [2021-03-26 13:51:52,407 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1936, PETRI_PLACES=153, PETRI_TRANSITIONS=133} [2021-03-26 13:51:52,407 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 138 predicate places. [2021-03-26 13:51:52,407 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:52,408 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 133 transitions, 1936 flow [2021-03-26 13:51:52,408 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 133 transitions, 1936 flow [2021-03-26 13:51:52,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 133 transitions, 1936 flow [2021-03-26 13:51:52,431 INFO L129 PetriNetUnfolder]: 112/247 cut-off events. [2021-03-26 13:51:52,431 INFO L130 PetriNetUnfolder]: For 13505/13519 co-relation queries the response was YES. [2021-03-26 13:51:52,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 247 events. 112/247 cut-off events. For 13505/13519 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1276 event pairs, 0 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 2170. Up to 176 conditions per place. [2021-03-26 13:51:52,433 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:52,547 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:52,547 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:52,547 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 140 [2021-03-26 13:51:52,547 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 1720 flow [2021-03-26 13:51:52,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:52,548 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:52,548 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:52,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:52,748 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1089202209, now seen corresponding path program 1 times [2021-03-26 13:51:52,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:52,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172729335] [2021-03-26 13:51:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:52,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,759 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:52,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:52,787 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:52,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:52,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172729335] [2021-03-26 13:51:52,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841888807] [2021-03-26 13:51:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:52,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:52,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:52,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:52,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:52,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:52,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:52,839 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:52,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:52,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:52,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:52,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:52,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:52,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:52,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:52,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:52,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:52,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:52,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764597466] [2021-03-26 13:51:52,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:52,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:52,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:52,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:52,855 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 163 [2021-03-26 13:51:52,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 1720 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:52,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:52,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 163 [2021-03-26 13:51:52,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:53,089 INFO L129 PetriNetUnfolder]: 115/253 cut-off events. [2021-03-26 13:51:53,089 INFO L130 PetriNetUnfolder]: For 19012/19018 co-relation queries the response was YES. [2021-03-26 13:51:53,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2672 conditions, 253 events. 115/253 cut-off events. For 19012/19018 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1290 event pairs, 0 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 2578. Up to 180 conditions per place. [2021-03-26 13:51:53,091 INFO L132 encePairwiseOnDemand]: 112/163 looper letters, 32 selfloop transitions, 94 changer transitions 2/134 dead transitions. [2021-03-26 13:51:53,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 2392 flow [2021-03-26 13:51:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2021-03-26 13:51:53,092 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.15132924335378323 [2021-03-26 13:51:53,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 148 transitions. [2021-03-26 13:51:53,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 148 transitions. [2021-03-26 13:51:53,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:53,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 148 transitions. [2021-03-26 13:51:53,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,093 INFO L185 Difference]: Start difference. First operand has 147 places, 130 transitions, 1720 flow. Second operand 6 states and 148 transitions. [2021-03-26 13:51:53,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 2392 flow [2021-03-26 13:51:53,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 134 transitions, 2172 flow, removed 60 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:53,127 INFO L241 Difference]: Finished difference. Result has 145 places, 132 transitions, 1909 flow [2021-03-26 13:51:53,127 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1909, PETRI_PLACES=145, PETRI_TRANSITIONS=132} [2021-03-26 13:51:53,128 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 130 predicate places. [2021-03-26 13:51:53,128 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:53,128 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 132 transitions, 1909 flow [2021-03-26 13:51:53,128 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 132 transitions, 1909 flow [2021-03-26 13:51:53,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 132 transitions, 1909 flow [2021-03-26 13:51:53,147 INFO L129 PetriNetUnfolder]: 113/248 cut-off events. [2021-03-26 13:51:53,147 INFO L130 PetriNetUnfolder]: For 15513/15513 co-relation queries the response was YES. [2021-03-26 13:51:53,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 248 events. 113/248 cut-off events. For 15513/15513 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1274 event pairs, 1 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 2135. Up to 178 conditions per place. [2021-03-26 13:51:53,149 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:53,190 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:53,190 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:53,190 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-03-26 13:51:53,190 INFO L480 AbstractCegarLoop]: Abstraction has has 144 places, 132 transitions, 1910 flow [2021-03-26 13:51:53,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,191 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:53,191 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:53,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:53,395 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:53,396 INFO L82 PathProgramCache]: Analyzing trace with hash -207105867, now seen corresponding path program 1 times [2021-03-26 13:51:53,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:53,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368133418] [2021-03-26 13:51:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:53,400 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:53,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:53,410 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:53,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:53,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:53,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368133418] [2021-03-26 13:51:53,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726084050] [2021-03-26 13:51:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:53,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:53,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:53,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:53,444 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:53,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:53,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:53,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:53,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:53,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:53,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:53,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:53,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:53,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:53,475 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:51:53,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:53,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:53,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:53,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:53,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:53,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433796586] [2021-03-26 13:51:53,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:53,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:53,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:53,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:53,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 164 [2021-03-26 13:51:53,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 132 transitions, 1910 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:53,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 164 [2021-03-26 13:51:53,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:53,812 INFO L129 PetriNetUnfolder]: 116/260 cut-off events. [2021-03-26 13:51:53,813 INFO L130 PetriNetUnfolder]: For 13705/13705 co-relation queries the response was YES. [2021-03-26 13:51:53,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 260 events. 116/260 cut-off events. For 13705/13705 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1347 event pairs, 1 based on Foata normal form. 3/263 useless extension candidates. Maximal degree in co-relation 2617. Up to 235 conditions per place. [2021-03-26 13:51:53,814 INFO L132 encePairwiseOnDemand]: 111/164 looper letters, 77 selfloop transitions, 54 changer transitions 3/138 dead transitions. [2021-03-26 13:51:53,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 138 transitions, 2532 flow [2021-03-26 13:51:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2021-03-26 13:51:53,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.10670731707317073 [2021-03-26 13:51:53,815 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 175 transitions. [2021-03-26 13:51:53,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 175 transitions. [2021-03-26 13:51:53,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:53,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 175 transitions. [2021-03-26 13:51:53,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,816 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:53,816 INFO L185 Difference]: Start difference. First operand has 144 places, 132 transitions, 1910 flow. Second operand 10 states and 175 transitions. [2021-03-26 13:51:53,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 138 transitions, 2532 flow [2021-03-26 13:51:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 138 transitions, 2204 flow, removed 96 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:53,849 INFO L241 Difference]: Finished difference. Result has 156 places, 135 transitions, 2022 flow [2021-03-26 13:51:53,849 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2022, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2021-03-26 13:51:53,850 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 141 predicate places. [2021-03-26 13:51:53,850 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:53,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 135 transitions, 2022 flow [2021-03-26 13:51:53,850 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 135 transitions, 2022 flow [2021-03-26 13:51:53,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 135 transitions, 2022 flow [2021-03-26 13:51:53,870 INFO L129 PetriNetUnfolder]: 114/251 cut-off events. [2021-03-26 13:51:53,870 INFO L130 PetriNetUnfolder]: For 14116/14203 co-relation queries the response was YES. [2021-03-26 13:51:53,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 251 events. 114/251 cut-off events. For 14116/14203 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1311 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 2214. Up to 180 conditions per place. [2021-03-26 13:51:53,872 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:54,005 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:54,005 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:54,005 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 155 [2021-03-26 13:51:54,005 INFO L480 AbstractCegarLoop]: Abstraction has has 150 places, 132 transitions, 1802 flow [2021-03-26 13:51:54,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,005 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:54,005 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:54,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:54,219 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash -974685605, now seen corresponding path program 1 times [2021-03-26 13:51:54,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:54,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143085130] [2021-03-26 13:51:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:54,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,229 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:54,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:54,251 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:54,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:54,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143085130] [2021-03-26 13:51:54,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377566105] [2021-03-26 13:51:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:54,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:54,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:54,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:54,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:54,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:54,312 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:54,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:54,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:54,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:54,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:54,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:54,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:54,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:54,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:54,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155066249] [2021-03-26 13:51:54,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:54,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:54,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:54,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 167 [2021-03-26 13:51:54,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 132 transitions, 1802 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:54,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 167 [2021-03-26 13:51:54,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:54,544 INFO L129 PetriNetUnfolder]: 117/257 cut-off events. [2021-03-26 13:51:54,544 INFO L130 PetriNetUnfolder]: For 19964/20022 co-relation queries the response was YES. [2021-03-26 13:51:54,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 257 events. 117/257 cut-off events. For 19964/20022 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1322 event pairs, 0 based on Foata normal form. 53/310 useless extension candidates. Maximal degree in co-relation 2629. Up to 184 conditions per place. [2021-03-26 13:51:54,546 INFO L132 encePairwiseOnDemand]: 115/167 looper letters, 32 selfloop transitions, 96 changer transitions 2/136 dead transitions. [2021-03-26 13:51:54,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 136 transitions, 2486 flow [2021-03-26 13:51:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2021-03-26 13:51:54,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.14870259481037923 [2021-03-26 13:51:54,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 149 transitions. [2021-03-26 13:51:54,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 149 transitions. [2021-03-26 13:51:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:54,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 149 transitions. [2021-03-26 13:51:54,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,548 INFO L185 Difference]: Start difference. First operand has 150 places, 132 transitions, 1802 flow. Second operand 6 states and 149 transitions. [2021-03-26 13:51:54,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 136 transitions, 2486 flow [2021-03-26 13:51:54,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 136 transitions, 2212 flow, removed 61 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:54,591 INFO L241 Difference]: Finished difference. Result has 147 places, 134 transitions, 1945 flow [2021-03-26 13:51:54,591 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1945, PETRI_PLACES=147, PETRI_TRANSITIONS=134} [2021-03-26 13:51:54,591 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 132 predicate places. [2021-03-26 13:51:54,592 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:54,592 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 134 transitions, 1945 flow [2021-03-26 13:51:54,592 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 134 transitions, 1945 flow [2021-03-26 13:51:54,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 134 transitions, 1945 flow [2021-03-26 13:51:54,611 INFO L129 PetriNetUnfolder]: 115/252 cut-off events. [2021-03-26 13:51:54,611 INFO L130 PetriNetUnfolder]: For 16036/16037 co-relation queries the response was YES. [2021-03-26 13:51:54,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 252 events. 115/252 cut-off events. For 16036/16037 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1293 event pairs, 1 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 2177. Up to 182 conditions per place. [2021-03-26 13:51:54,613 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:54,655 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:54,655 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:54,655 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-26 13:51:54,655 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 134 transitions, 1946 flow [2021-03-26 13:51:54,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:54,656 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:54,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:54,856 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:54,856 INFO L82 PathProgramCache]: Analyzing trace with hash -73734443, now seen corresponding path program 1 times [2021-03-26 13:51:54,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:54,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436420840] [2021-03-26 13:51:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:54,861 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:54,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:54,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:54,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:54,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:54,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:54,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436420840] [2021-03-26 13:51:54,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743648472] [2021-03-26 13:51:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:54,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:54,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:54,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:54,905 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:54,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:54,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:54,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:54,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:54,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:54,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:54,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:54,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:54,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:54,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:54,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:51:54,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:54,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:54,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:54,937 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:54,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:54,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:54,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:54,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:54,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401252744] [2021-03-26 13:51:54,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:54,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:54,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:54,964 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 168 [2021-03-26 13:51:54,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 134 transitions, 1946 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:54,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:54,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 168 [2021-03-26 13:51:54,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:55,242 INFO L129 PetriNetUnfolder]: 118/264 cut-off events. [2021-03-26 13:51:55,242 INFO L130 PetriNetUnfolder]: For 14362/14411 co-relation queries the response was YES. [2021-03-26 13:51:55,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2750 conditions, 264 events. 118/264 cut-off events. For 14362/14411 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1388 event pairs, 1 based on Foata normal form. 52/316 useless extension candidates. Maximal degree in co-relation 2667. Up to 239 conditions per place. [2021-03-26 13:51:55,244 INFO L132 encePairwiseOnDemand]: 114/168 looper letters, 78 selfloop transitions, 55 changer transitions 3/140 dead transitions. [2021-03-26 13:51:55,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 2578 flow [2021-03-26 13:51:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2021-03-26 13:51:55,245 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.10476190476190476 [2021-03-26 13:51:55,245 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 176 transitions. [2021-03-26 13:51:55,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 176 transitions. [2021-03-26 13:51:55,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:55,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 176 transitions. [2021-03-26 13:51:55,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 168.0) internal successors, (1848), 11 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,246 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 168.0) internal successors, (1848), 11 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,246 INFO L185 Difference]: Start difference. First operand has 146 places, 134 transitions, 1946 flow. Second operand 10 states and 176 transitions. [2021-03-26 13:51:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 2578 flow [2021-03-26 13:51:55,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 2243 flow, removed 98 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:55,282 INFO L241 Difference]: Finished difference. Result has 158 places, 137 transitions, 2059 flow [2021-03-26 13:51:55,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2059, PETRI_PLACES=158, PETRI_TRANSITIONS=137} [2021-03-26 13:51:55,282 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 143 predicate places. [2021-03-26 13:51:55,282 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:55,282 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 137 transitions, 2059 flow [2021-03-26 13:51:55,282 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 137 transitions, 2059 flow [2021-03-26 13:51:55,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 137 transitions, 2059 flow [2021-03-26 13:51:55,303 INFO L129 PetriNetUnfolder]: 116/255 cut-off events. [2021-03-26 13:51:55,303 INFO L130 PetriNetUnfolder]: For 13779/13785 co-relation queries the response was YES. [2021-03-26 13:51:55,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 255 events. 116/255 cut-off events. For 13779/13785 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1357 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 2257. Up to 184 conditions per place. [2021-03-26 13:51:55,305 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:55,422 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:55,423 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:55,423 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 141 [2021-03-26 13:51:55,423 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 1835 flow [2021-03-26 13:51:55,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,423 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:55,423 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:55,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:55,623 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash -860169001, now seen corresponding path program 1 times [2021-03-26 13:51:55,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:55,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610316230] [2021-03-26 13:51:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:55,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,647 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:55,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:55,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-26 13:51:55,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:55,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610316230] [2021-03-26 13:51:55,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423930841] [2021-03-26 13:51:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 13:51:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:55,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:55,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:55,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:55,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:55,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:55,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:55,723 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:55,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:55,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:55,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:55,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:55,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:55,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:55,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:55,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:55,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:55,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:55,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104069325] [2021-03-26 13:51:55,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:55,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:55,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:55,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:55,737 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 171 [2021-03-26 13:51:55,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 1835 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:55,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 171 [2021-03-26 13:51:55,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:55,980 INFO L129 PetriNetUnfolder]: 118/260 cut-off events. [2021-03-26 13:51:55,981 INFO L130 PetriNetUnfolder]: For 18080/18135 co-relation queries the response was YES. [2021-03-26 13:51:55,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 260 events. 118/260 cut-off events. For 18080/18135 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1333 event pairs, 0 based on Foata normal form. 50/310 useless extension candidates. Maximal degree in co-relation 2624. Up to 188 conditions per place. [2021-03-26 13:51:55,982 INFO L132 encePairwiseOnDemand]: 118/171 looper letters, 32 selfloop transitions, 98 changer transitions 2/138 dead transitions. [2021-03-26 13:51:55,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 138 transitions, 2531 flow [2021-03-26 13:51:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-03-26 13:51:55,983 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.14619883040935672 [2021-03-26 13:51:55,983 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-03-26 13:51:55,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-03-26 13:51:55,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:55,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-03-26 13:51:55,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,984 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:55,984 INFO L185 Difference]: Start difference. First operand has 152 places, 134 transitions, 1835 flow. Second operand 6 states and 150 transitions. [2021-03-26 13:51:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 138 transitions, 2531 flow [2021-03-26 13:51:56,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 138 transitions, 2252 flow, removed 62 selfloop flow, removed 10 redundant places. [2021-03-26 13:51:56,030 INFO L241 Difference]: Finished difference. Result has 149 places, 136 transitions, 1981 flow [2021-03-26 13:51:56,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1981, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2021-03-26 13:51:56,030 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 134 predicate places. [2021-03-26 13:51:56,030 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:56,030 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 136 transitions, 1981 flow [2021-03-26 13:51:56,030 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 136 transitions, 1981 flow [2021-03-26 13:51:56,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 136 transitions, 1981 flow [2021-03-26 13:51:56,050 INFO L129 PetriNetUnfolder]: 117/256 cut-off events. [2021-03-26 13:51:56,050 INFO L130 PetriNetUnfolder]: For 13531/13534 co-relation queries the response was YES. [2021-03-26 13:51:56,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 256 events. 117/256 cut-off events. For 13531/13534 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1349 event pairs, 0 based on Foata normal form. 2/258 useless extension candidates. Maximal degree in co-relation 2219. Up to 186 conditions per place. [2021-03-26 13:51:56,052 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:56,055 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:56,055 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:51:56,055 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-26 13:51:56,056 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 1981 flow [2021-03-26 13:51:56,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:56,056 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:56,056 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:56,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:56,256 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:56,256 INFO L82 PathProgramCache]: Analyzing trace with hash -70040359, now seen corresponding path program 1 times [2021-03-26 13:51:56,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:56,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246624607] [2021-03-26 13:51:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:56,266 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:56,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:56,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:56,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:56,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:56,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:56,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246624607] [2021-03-26 13:51:56,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775823703] [2021-03-26 13:51:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:56,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:56,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:56,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:56,311 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:56,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:56,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:56,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:56,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:51:56,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:56,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:56,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:56,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:56,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:56,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:51:56,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:51:56,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:56,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:56,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:56,350 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:56,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:56,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:56,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:56,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:56,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:56,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058553515] [2021-03-26 13:51:56,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:56,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:56,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:56,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:56,379 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 171 [2021-03-26 13:51:56,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 136 transitions, 1981 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:56,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:56,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 171 [2021-03-26 13:51:56,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:56,662 INFO L129 PetriNetUnfolder]: 120/269 cut-off events. [2021-03-26 13:51:56,662 INFO L130 PetriNetUnfolder]: For 18569/18569 co-relation queries the response was YES. [2021-03-26 13:51:56,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 269 events. 120/269 cut-off events. For 18569/18569 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1406 event pairs, 0 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 2715. Up to 243 conditions per place. [2021-03-26 13:51:56,665 INFO L132 encePairwiseOnDemand]: 117/171 looper letters, 80 selfloop transitions, 55 changer transitions 3/142 dead transitions. [2021-03-26 13:51:56,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 142 transitions, 2623 flow [2021-03-26 13:51:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2021-03-26 13:51:56,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.10292397660818714 [2021-03-26 13:51:56,666 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 176 transitions. [2021-03-26 13:51:56,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 176 transitions. [2021-03-26 13:51:56,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:56,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 176 transitions. [2021-03-26 13:51:56,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:56,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:56,667 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:56,667 INFO L185 Difference]: Start difference. First operand has 148 places, 136 transitions, 1981 flow. Second operand 10 states and 176 transitions. [2021-03-26 13:51:56,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 142 transitions, 2623 flow [2021-03-26 13:51:56,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 142 transitions, 2232 flow, removed 99 selfloop flow, removed 4 redundant places. [2021-03-26 13:51:56,707 INFO L241 Difference]: Finished difference. Result has 159 places, 139 transitions, 2044 flow [2021-03-26 13:51:56,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=159, PETRI_TRANSITIONS=139} [2021-03-26 13:51:56,707 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 144 predicate places. [2021-03-26 13:51:56,707 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:56,707 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 139 transitions, 2044 flow [2021-03-26 13:51:56,707 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 139 transitions, 2044 flow [2021-03-26 13:51:56,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 139 transitions, 2044 flow [2021-03-26 13:51:56,728 INFO L129 PetriNetUnfolder]: 118/259 cut-off events. [2021-03-26 13:51:56,728 INFO L130 PetriNetUnfolder]: For 15252/15343 co-relation queries the response was YES. [2021-03-26 13:51:56,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2388 conditions, 259 events. 118/259 cut-off events. For 15252/15343 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1380 event pairs, 1 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 2296. Up to 188 conditions per place. [2021-03-26 13:51:56,730 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:56,884 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:56,884 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 13:51:56,885 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-03-26 13:51:56,885 INFO L480 AbstractCegarLoop]: Abstraction has has 153 places, 136 transitions, 1824 flow [2021-03-26 13:51:56,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:56,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:56,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:57,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-03-26 13:51:57,085 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:57,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1247191971, now seen corresponding path program 1 times [2021-03-26 13:51:57,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:57,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035608491] [2021-03-26 13:51:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:57,104 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:57,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:57,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:57,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:57,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:57,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:57,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:57,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035608491] [2021-03-26 13:51:57,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444954123] [2021-03-26 13:51:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:57,153 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-26 13:51:57,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:57,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,159 INFO L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-03-26 13:51:57,159 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-26 13:51:57,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,171 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:57,171 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-03-26 13:51:57,171 INFO L142 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-03-26 13:51:57,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:57,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:51:57,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:51:57,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:57,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:51:57,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,187 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-03-26 13:51:57,187 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-03-26 13:51:57,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:57,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:57,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:51:57,204 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-26 13:51:57,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:57,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:57,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 13:51:57,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-26 13:51:57,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:57,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:57,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 13:51:57,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361926966] [2021-03-26 13:51:57,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:51:57,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:51:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:51:57,230 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 175 [2021-03-26 13:51:57,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 136 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:57,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:57,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 175 [2021-03-26 13:51:57,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:57,560 INFO L129 PetriNetUnfolder]: 119/266 cut-off events. [2021-03-26 13:51:57,561 INFO L130 PetriNetUnfolder]: For 18144/18144 co-relation queries the response was YES. [2021-03-26 13:51:57,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2828 conditions, 266 events. 119/266 cut-off events. For 18144/18144 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1384 event pairs, 0 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 2731. Up to 242 conditions per place. [2021-03-26 13:51:57,562 INFO L132 encePairwiseOnDemand]: 114/175 looper letters, 72 selfloop transitions, 62 changer transitions 2/140 dead transitions. [2021-03-26 13:51:57,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 140 transitions, 2536 flow [2021-03-26 13:51:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:51:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:51:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2021-03-26 13:51:57,563 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.10476190476190476 [2021-03-26 13:51:57,563 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 165 transitions. [2021-03-26 13:51:57,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 165 transitions. [2021-03-26 13:51:57,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:57,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 165 transitions. [2021-03-26 13:51:57,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:57,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:57,564 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:57,564 INFO L185 Difference]: Start difference. First operand has 153 places, 136 transitions, 1824 flow. Second operand 9 states and 165 transitions. [2021-03-26 13:51:57,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 140 transitions, 2536 flow [2021-03-26 13:51:57,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 2300 flow, removed 65 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:57,598 INFO L241 Difference]: Finished difference. Result has 156 places, 138 transitions, 1946 flow [2021-03-26 13:51:57,598 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1946, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2021-03-26 13:51:57,598 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 141 predicate places. [2021-03-26 13:51:57,598 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:57,598 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 1946 flow [2021-03-26 13:51:57,599 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 1946 flow [2021-03-26 13:51:57,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 138 transitions, 1946 flow [2021-03-26 13:51:57,619 INFO L129 PetriNetUnfolder]: 117/258 cut-off events. [2021-03-26 13:51:57,619 INFO L130 PetriNetUnfolder]: For 14913/14914 co-relation queries the response was YES. [2021-03-26 13:51:57,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 258 events. 117/258 cut-off events. For 14913/14914 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1355 event pairs, 0 based on Foata normal form. 1/259 useless extension candidates. Maximal degree in co-relation 2113. Up to 188 conditions per place. [2021-03-26 13:51:57,620 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:57,702 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:57,702 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:51:57,702 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2021-03-26 13:51:57,702 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 136 transitions, 1828 flow [2021-03-26 13:51:57,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:57,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:57,703 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:57,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:57,903 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash -66346275, now seen corresponding path program 1 times [2021-03-26 13:51:57,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:57,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690036500] [2021-03-26 13:51:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:57,909 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:57,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:57,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:57,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:57,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:57,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690036500] [2021-03-26 13:51:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814922591] [2021-03-26 13:51:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:57,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:57,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:57,955 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:57,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 13:51:57,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:57,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:57,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:51:57,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:57,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:57,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:57,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:57,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:57,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:57,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,970 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-03-26 13:51:57,970 INFO L142 QuantifierPusher]: treesize reduction 2, result has 94.4 percent of original size [2021-03-26 13:51:57,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:57,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:57,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:51:57,985 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.0 percent of original size [2021-03-26 13:51:57,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-26 13:51:57,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:57,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:57,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:57,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:51:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:58,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:58,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:58,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565398924] [2021-03-26 13:51:58,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:58,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:58,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:58,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:58,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 177 [2021-03-26 13:51:58,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 136 transitions, 1828 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:58,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:58,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 177 [2021-03-26 13:51:58,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:58,291 INFO L129 PetriNetUnfolder]: 120/268 cut-off events. [2021-03-26 13:51:58,292 INFO L130 PetriNetUnfolder]: For 16692/16692 co-relation queries the response was YES. [2021-03-26 13:51:58,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 268 events. 120/268 cut-off events. For 16692/16692 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1397 event pairs, 1 based on Foata normal form. 3/271 useless extension candidates. Maximal degree in co-relation 2551. Up to 243 conditions per place. [2021-03-26 13:51:58,293 INFO L132 encePairwiseOnDemand]: 122/177 looper letters, 79 selfloop transitions, 56 changer transitions 3/142 dead transitions. [2021-03-26 13:51:58,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 142 transitions, 2470 flow [2021-03-26 13:51:58,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2021-03-26 13:51:58,294 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1 [2021-03-26 13:51:58,294 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 177 transitions. [2021-03-26 13:51:58,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 177 transitions. [2021-03-26 13:51:58,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:58,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 177 transitions. [2021-03-26 13:51:58,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:58,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:58,295 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:58,295 INFO L185 Difference]: Start difference. First operand has 152 places, 136 transitions, 1828 flow. Second operand 10 states and 177 transitions. [2021-03-26 13:51:58,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 142 transitions, 2470 flow [2021-03-26 13:51:58,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 142 transitions, 2230 flow, removed 60 selfloop flow, removed 8 redundant places. [2021-03-26 13:51:58,340 INFO L241 Difference]: Finished difference. Result has 159 places, 139 transitions, 2044 flow [2021-03-26 13:51:58,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=159, PETRI_TRANSITIONS=139} [2021-03-26 13:51:58,340 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 144 predicate places. [2021-03-26 13:51:58,340 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:58,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 139 transitions, 2044 flow [2021-03-26 13:51:58,340 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 139 transitions, 2044 flow [2021-03-26 13:51:58,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 139 transitions, 2044 flow [2021-03-26 13:51:58,361 INFO L129 PetriNetUnfolder]: 118/259 cut-off events. [2021-03-26 13:51:58,361 INFO L130 PetriNetUnfolder]: For 15060/15152 co-relation queries the response was YES. [2021-03-26 13:51:58,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 259 events. 118/259 cut-off events. For 15060/15152 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1364 event pairs, 0 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 2299. Up to 188 conditions per place. [2021-03-26 13:51:58,363 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:51:58,482 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:51:58,482 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:51:58,482 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 142 [2021-03-26 13:51:58,482 INFO L480 AbstractCegarLoop]: Abstraction has has 153 places, 136 transitions, 1816 flow [2021-03-26 13:51:58,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:58,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:58,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:58,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:58,682 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:58,683 INFO L82 PathProgramCache]: Analyzing trace with hash -745652397, now seen corresponding path program 1 times [2021-03-26 13:51:58,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:58,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006681297] [2021-03-26 13:51:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:58,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,702 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:51:58,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:51:58,727 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:51:58,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:51:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:58,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006681297] [2021-03-26 13:51:58,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868402854] [2021-03-26 13:51:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:58,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:51:58,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:58,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:58,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:58,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:58,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:51:58,795 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:51:58,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:51:58,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:58,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:58,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:51:58,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:58,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:58,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:58,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:51:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:58,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:58,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:51:58,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343993334] [2021-03-26 13:51:58,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:51:58,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:58,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:51:58,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:51:58,811 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 180 [2021-03-26 13:51:58,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 136 transitions, 1816 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:58,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:58,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 180 [2021-03-26 13:51:58,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:59,080 INFO L129 PetriNetUnfolder]: 121/265 cut-off events. [2021-03-26 13:51:59,080 INFO L130 PetriNetUnfolder]: For 21256/21262 co-relation queries the response was YES. [2021-03-26 13:51:59,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 265 events. 121/265 cut-off events. For 21256/21262 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1374 event pairs, 0 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 2728. Up to 192 conditions per place. [2021-03-26 13:51:59,082 INFO L132 encePairwiseOnDemand]: 126/180 looper letters, 32 selfloop transitions, 100 changer transitions 2/140 dead transitions. [2021-03-26 13:51:59,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 140 transitions, 2524 flow [2021-03-26 13:51:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:51:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:51:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2021-03-26 13:51:59,083 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1398148148148148 [2021-03-26 13:51:59,083 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 151 transitions. [2021-03-26 13:51:59,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 151 transitions. [2021-03-26 13:51:59,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:59,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 151 transitions. [2021-03-26 13:51:59,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,084 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,084 INFO L185 Difference]: Start difference. First operand has 153 places, 136 transitions, 1816 flow. Second operand 6 states and 151 transitions. [2021-03-26 13:51:59,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 140 transitions, 2524 flow [2021-03-26 13:51:59,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 140 transitions, 2292 flow, removed 63 selfloop flow, removed 9 redundant places. [2021-03-26 13:51:59,131 INFO L241 Difference]: Finished difference. Result has 151 places, 138 transitions, 2017 flow [2021-03-26 13:51:59,132 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2017, PETRI_PLACES=151, PETRI_TRANSITIONS=138} [2021-03-26 13:51:59,132 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 136 predicate places. [2021-03-26 13:51:59,132 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:59,132 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 138 transitions, 2017 flow [2021-03-26 13:51:59,132 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 138 transitions, 2017 flow [2021-03-26 13:51:59,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 138 transitions, 2017 flow [2021-03-26 13:51:59,153 INFO L129 PetriNetUnfolder]: 119/260 cut-off events. [2021-03-26 13:51:59,153 INFO L130 PetriNetUnfolder]: For 17296/17297 co-relation queries the response was YES. [2021-03-26 13:51:59,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 260 events. 119/260 cut-off events. For 17296/17297 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1366 event pairs, 1 based on Foata normal form. 1/261 useless extension candidates. Maximal degree in co-relation 2261. Up to 190 conditions per place. [2021-03-26 13:51:59,155 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:51:59,198 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:51:59,198 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:51:59,198 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-03-26 13:51:59,198 INFO L480 AbstractCegarLoop]: Abstraction has has 150 places, 138 transitions, 2018 flow [2021-03-26 13:51:59,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,198 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:51:59,198 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:51:59,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-03-26 13:51:59,413 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:51:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:51:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash 658816216, now seen corresponding path program 1 times [2021-03-26 13:51:59,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:51:59,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173808453] [2021-03-26 13:51:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:51:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:59,419 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:51:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:51:59,430 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:51:59,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:51:59,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:51:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:51:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:59,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173808453] [2021-03-26 13:51:59,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269344142] [2021-03-26 13:51:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:51:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:51:59,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:51:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:51:59,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,467 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:51:59,468 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.3 percent of original size 41 [2021-03-26 13:51:59,468 INFO L142 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-03-26 13:51:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:51:59,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:51:59,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:51:59,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:59,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:59,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:59,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:59,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:59,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-26 13:51:59,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,485 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.3 percent of original size 49 [2021-03-26 13:51:59,485 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.2 percent of original size [2021-03-26 13:51:59,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:59,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:59,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-26 13:51:59,501 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.6 percent of original size [2021-03-26 13:51:59,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-26 13:51:59,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:51:59,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-26 13:51:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:51:59,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:51:59,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:51:59,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201622663] [2021-03-26 13:51:59,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:51:59,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:51:59,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:51:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:51:59,526 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 181 [2021-03-26 13:51:59,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 138 transitions, 2018 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:51:59,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 181 [2021-03-26 13:51:59,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:51:59,900 INFO L129 PetriNetUnfolder]: 122/272 cut-off events. [2021-03-26 13:51:59,900 INFO L130 PetriNetUnfolder]: For 15310/15310 co-relation queries the response was YES. [2021-03-26 13:51:59,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 272 events. 122/272 cut-off events. For 15310/15310 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1423 event pairs, 1 based on Foata normal form. 3/275 useless extension candidates. Maximal degree in co-relation 2767. Up to 247 conditions per place. [2021-03-26 13:51:59,902 INFO L132 encePairwiseOnDemand]: 125/181 looper letters, 80 selfloop transitions, 57 changer transitions 3/144 dead transitions. [2021-03-26 13:51:59,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 144 transitions, 2670 flow [2021-03-26 13:51:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:51:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:51:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2021-03-26 13:51:59,903 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.09834254143646409 [2021-03-26 13:51:59,903 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 178 transitions. [2021-03-26 13:51:59,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 178 transitions. [2021-03-26 13:51:59,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:51:59,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 178 transitions. [2021-03-26 13:51:59,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,904 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:51:59,904 INFO L185 Difference]: Start difference. First operand has 150 places, 138 transitions, 2018 flow. Second operand 10 states and 178 transitions. [2021-03-26 13:51:59,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 144 transitions, 2670 flow [2021-03-26 13:51:59,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 144 transitions, 2321 flow, removed 102 selfloop flow, removed 3 redundant places. [2021-03-26 13:51:59,942 INFO L241 Difference]: Finished difference. Result has 162 places, 141 transitions, 2133 flow [2021-03-26 13:51:59,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2021-03-26 13:51:59,942 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 147 predicate places. [2021-03-26 13:51:59,942 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:51:59,942 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 141 transitions, 2133 flow [2021-03-26 13:51:59,942 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 141 transitions, 2133 flow [2021-03-26 13:51:59,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 141 transitions, 2133 flow [2021-03-26 13:51:59,963 INFO L129 PetriNetUnfolder]: 120/263 cut-off events. [2021-03-26 13:51:59,963 INFO L130 PetriNetUnfolder]: For 14804/14812 co-relation queries the response was YES. [2021-03-26 13:51:59,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 263 events. 120/263 cut-off events. For 14804/14812 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1354 event pairs, 0 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 2343. Up to 192 conditions per place. [2021-03-26 13:51:59,965 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:52:00,083 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:52:00,083 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:52:00,083 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 141 [2021-03-26 13:52:00,083 INFO L480 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1901 flow [2021-03-26 13:52:00,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:00,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:52:00,083 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:52:00,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-03-26 13:52:00,284 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:52:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:52:00,284 INFO L82 PathProgramCache]: Analyzing trace with hash -488076528, now seen corresponding path program 1 times [2021-03-26 13:52:00,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:52:00,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977568974] [2021-03-26 13:52:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:52:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:52:00,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,295 INFO L142 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-03-26 13:52:00,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:52:00,319 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-26 13:52:00,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:52:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:52:00,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977568974] [2021-03-26 13:52:00,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25591111] [2021-03-26 13:52:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:52:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:52:00,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 13:52:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:52:00,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:52:00,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:52:00,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:52:00,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:52:00,370 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-03-26 13:52:00,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 13:52:00,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:00,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 13:52:00,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:52:00,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:52:00,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:52:00,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:52:00,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-26 13:52:00,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881215894] [2021-03-26 13:52:00,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:52:00,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:52:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:52:00,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:52:00,384 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 184 [2021-03-26 13:52:00,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1901 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:00,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:52:00,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 184 [2021-03-26 13:52:00,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:52:00,614 INFO L129 PetriNetUnfolder]: 123/269 cut-off events. [2021-03-26 13:52:00,614 INFO L130 PetriNetUnfolder]: For 22246/22252 co-relation queries the response was YES. [2021-03-26 13:52:00,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 269 events. 123/269 cut-off events. For 22246/22252 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1401 event pairs, 0 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 2779. Up to 196 conditions per place. [2021-03-26 13:52:00,616 INFO L132 encePairwiseOnDemand]: 129/184 looper letters, 32 selfloop transitions, 102 changer transitions 2/142 dead transitions. [2021-03-26 13:52:00,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 142 transitions, 2621 flow [2021-03-26 13:52:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:52:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:52:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-03-26 13:52:00,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.13768115942028986 [2021-03-26 13:52:00,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-03-26 13:52:00,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-03-26 13:52:00,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:52:00,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-03-26 13:52:00,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:00,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:00,618 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:00,618 INFO L185 Difference]: Start difference. First operand has 156 places, 138 transitions, 1901 flow. Second operand 6 states and 152 transitions. [2021-03-26 13:52:00,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 142 transitions, 2621 flow [2021-03-26 13:52:00,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 142 transitions, 2332 flow, removed 64 selfloop flow, removed 10 redundant places. [2021-03-26 13:52:00,667 INFO L241 Difference]: Finished difference. Result has 153 places, 140 transitions, 2053 flow [2021-03-26 13:52:00,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2053, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2021-03-26 13:52:00,668 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 138 predicate places. [2021-03-26 13:52:00,668 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:52:00,668 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 140 transitions, 2053 flow [2021-03-26 13:52:00,668 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 140 transitions, 2053 flow [2021-03-26 13:52:00,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 140 transitions, 2053 flow [2021-03-26 13:52:00,689 INFO L129 PetriNetUnfolder]: 121/264 cut-off events. [2021-03-26 13:52:00,689 INFO L130 PetriNetUnfolder]: For 14604/14607 co-relation queries the response was YES. [2021-03-26 13:52:00,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 264 events. 121/264 cut-off events. For 14604/14607 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1401 event pairs, 0 based on Foata normal form. 2/266 useless extension candidates. Maximal degree in co-relation 2303. Up to 194 conditions per place. [2021-03-26 13:52:00,691 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 13:52:00,694 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:52:00,694 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:52:00,694 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-26 13:52:00,694 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 140 transitions, 2053 flow [2021-03-26 13:52:00,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:00,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:52:00,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:52:00,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-03-26 13:52:00,901 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:52:00,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:52:00,901 INFO L82 PathProgramCache]: Analyzing trace with hash -58121076, now seen corresponding path program 1 times [2021-03-26 13:52:00,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:52:00,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635821780] [2021-03-26 13:52:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:52:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:52:00,906 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-03-26 13:52:00,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:52:00,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:52:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:00,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:52:00,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:52:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:52:00,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635821780] [2021-03-26 13:52:00,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694933492] [2021-03-26 13:52:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:52:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:52:00,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-26 13:52:00,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:52:00,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:00,953 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 13:52:00,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:00,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:00,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:52:00,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:52:00,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:52:00,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:52:00,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:52:00,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:52:00,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:52:00,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 13:52:00,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,967 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.6 percent of original size 25 [2021-03-26 13:52:00,968 INFO L142 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size [2021-03-26 13:52:00,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:00,988 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-03-26 13:52:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 13:52:00,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:00,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:00,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:00,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:01,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:01,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:01,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:01,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:52:01,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 13:52:01,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 13:52:01,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441978779] [2021-03-26 13:52:01,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:52:01,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:52:01,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:52:01,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:52:01,008 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 184 [2021-03-26 13:52:01,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 140 transitions, 2053 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:01,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:52:01,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 184 [2021-03-26 13:52:01,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:52:01,268 INFO L129 PetriNetUnfolder]: 123/275 cut-off events. [2021-03-26 13:52:01,268 INFO L130 PetriNetUnfolder]: For 19511/19563 co-relation queries the response was YES. [2021-03-26 13:52:01,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 275 events. 123/275 cut-off events. For 19511/19563 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1445 event pairs, 2 based on Foata normal form. 55/330 useless extension candidates. Maximal degree in co-relation 2813. Up to 251 conditions per place. [2021-03-26 13:52:01,270 INFO L132 encePairwiseOnDemand]: 128/184 looper letters, 82 selfloop transitions, 57 changer transitions 3/146 dead transitions. [2021-03-26 13:52:01,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 146 transitions, 2715 flow [2021-03-26 13:52:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:52:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:52:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2021-03-26 13:52:01,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.0967391304347826 [2021-03-26 13:52:01,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 178 transitions. [2021-03-26 13:52:01,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 178 transitions. [2021-03-26 13:52:01,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:52:01,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 178 transitions. [2021-03-26 13:52:01,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:01,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:01,272 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:01,272 INFO L185 Difference]: Start difference. First operand has 152 places, 140 transitions, 2053 flow. Second operand 10 states and 178 transitions. [2021-03-26 13:52:01,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 146 transitions, 2715 flow [2021-03-26 13:52:01,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 146 transitions, 2308 flow, removed 103 selfloop flow, removed 4 redundant places. [2021-03-26 13:52:01,305 INFO L241 Difference]: Finished difference. Result has 163 places, 143 transitions, 2116 flow [2021-03-26 13:52:01,305 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2116, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2021-03-26 13:52:01,305 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 148 predicate places. [2021-03-26 13:52:01,306 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:52:01,306 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 143 transitions, 2116 flow [2021-03-26 13:52:01,306 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 143 transitions, 2116 flow [2021-03-26 13:52:01,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 143 transitions, 2116 flow [2021-03-26 13:52:01,328 INFO L129 PetriNetUnfolder]: 122/269 cut-off events. [2021-03-26 13:52:01,328 INFO L130 PetriNetUnfolder]: For 16648/16648 co-relation queries the response was YES. [2021-03-26 13:52:01,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 269 events. 122/269 cut-off events. For 16648/16648 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1425 event pairs, 1 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 2440. Up to 196 conditions per place. [2021-03-26 13:52:01,330 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 13:52:01,483 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:52:01,483 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 13:52:01,483 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-03-26 13:52:01,484 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 1888 flow [2021-03-26 13:52:01,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:52:01,484 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:52:01,484 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:52:01,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-03-26 13:52:01,684 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:52:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:52:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash 749283735, now seen corresponding path program 1 times [2021-03-26 13:52:01,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:52:01,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031098076] [2021-03-26 13:52:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:52:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:52:01,689 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 13:52:01,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:52:01,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:52:01,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:52:01,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 13:52:01,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:52:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:52:01,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031098076] [2021-03-26 13:52:01,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055894851] [2021-03-26 13:52:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 13:52:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:52:01,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-26 13:52:01,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 13:52:01,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 13:52:01,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,753 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-26 13:52:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 13:52:01,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:52:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 13:52:01,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:01,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,768 INFO L147 QuantifierPusher]: treesize reduction -2, result has 106.7 percent of original size 32 [2021-03-26 13:52:01,768 INFO L142 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size [2021-03-26 13:52:01,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-26 13:52:01,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-26 13:52:01,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-26 13:52:01,785 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-03-26 13:52:01,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:52:01,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,802 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:01,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-03-26 13:52:01,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-03-26 13:52:01,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,822 INFO L142 QuantifierPusher]: treesize reduction -3, result has 103.5 percent of original size [2021-03-26 13:52:01,824 INFO L147 QuantifierPusher]: treesize reduction -3, result has 101.6 percent of original size 194 [2021-03-26 13:52:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,825 INFO L142 QuantifierPusher]: treesize reduction -3, result has 103.3 percent of original size [2021-03-26 13:52:01,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 13:52:01,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,854 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:01,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:52:01,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,858 INFO L142 QuantifierPusher]: treesize reduction -2, result has 102.1 percent of original size [2021-03-26 13:52:01,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,866 INFO L147 QuantifierPusher]: treesize reduction -4, result has 101.8 percent of original size 232 [2021-03-26 13:52:01,897 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:01,908 INFO L147 QuantifierPusher]: treesize reduction -2, result has 101.5 percent of original size 138 [2021-03-26 13:52:01,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:01,908 INFO L142 QuantifierPusher]: treesize reduction -1, result has 100.3 percent of original size [2021-03-26 13:52:01,950 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,014 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,097 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:02,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,149 INFO L142 QuantifierPusher]: treesize reduction -2, result has 101.9 percent of original size [2021-03-26 13:52:02,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,163 INFO L147 QuantifierPusher]: treesize reduction -4, result has 106.7 percent of original size 64 [2021-03-26 13:52:02,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,164 INFO L142 QuantifierPusher]: treesize reduction -6, result has 104.3 percent of original size [2021-03-26 13:52:02,193 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,268 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 13:52:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,313 INFO L147 QuantifierPusher]: treesize reduction -4, result has 104.5 percent of original size 93 [2021-03-26 13:52:02,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,315 INFO L147 QuantifierPusher]: treesize reduction -4, result has 106.9 percent of original size 62 [2021-03-26 13:52:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,317 INFO L142 QuantifierPusher]: treesize reduction -2, result has 102.7 percent of original size [2021-03-26 13:52:02,321 INFO L147 QuantifierPusher]: treesize reduction -14, result has 103.6 percent of original size 407 [2021-03-26 13:52:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,324 INFO L142 QuantifierPusher]: treesize reduction -4, result has 102.1 percent of original size [2021-03-26 13:52:02,345 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,367 INFO L147 QuantifierPusher]: treesize reduction -7, result has 112.5 percent of original size 63 [2021-03-26 13:52:02,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,368 INFO L142 QuantifierPusher]: treesize reduction -1, result has 101.4 percent of original size [2021-03-26 13:52:02,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 13:52:02,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:52:02,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-26 13:52:02,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,385 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,422 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:52:02,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:52:02,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,433 INFO L147 QuantifierPusher]: treesize reduction -2, result has 106.9 percent of original size 31 [2021-03-26 13:52:02,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-26 13:52:02,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,440 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.3 percent of original size 24 [2021-03-26 13:52:02,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:52:02,468 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,540 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,613 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:52:02,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 13:52:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-26 13:52:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,657 INFO L147 QuantifierPusher]: treesize reduction -9, result has 114.1 percent of original size 73 [2021-03-26 13:52:02,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,658 INFO L142 QuantifierPusher]: treesize reduction -9, result has 109.0 percent of original size [2021-03-26 13:52:02,674 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-26 13:52:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 13:52:02,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,696 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,705 INFO L147 QuantifierPusher]: treesize reduction 53, result has 88.2 percent of original size 395 [2021-03-26 13:52:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:02,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:02,730 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:02,902 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:03,173 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:03,596 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:04,220 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:05,134 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:06,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:06,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:06,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:52:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:06,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:06,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:06,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:52:06,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:06,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:52:06,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:52:06,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-26 13:52:06,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,121 INFO L142 QuantifierPusher]: treesize reduction 105, result has 84.4 percent of original size [2021-03-26 13:52:06,134 INFO L147 QuantifierPusher]: treesize reduction -201, result has 103.6 percent of original size 5734 [2021-03-26 13:52:06,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,155 INFO L142 QuantifierPusher]: treesize reduction -5, result has 100.3 percent of original size [2021-03-26 13:52:06,281 INFO L147 QuantifierPusher]: treesize reduction -97, result has 100.3 percent of original size 37200 [2021-03-26 13:52:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 13:52:06,411 INFO L142 QuantifierPusher]: treesize reduction -198, result has 101.1 percent of original size [2021-03-26 13:52:08,236 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:12,152 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:18,320 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:26,682 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:39,202 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:52:54,731 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:53:12,806 INFO L842 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:53:33,285 INFO L842 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:53:56,774 INFO L842 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:54:22,830 INFO L842 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:54:51,800 INFO L842 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:55:23,367 INFO L842 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:55:57,865 INFO L842 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:56:34,932 INFO L842 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:57:14,758 INFO L842 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:57:57,360 INFO L842 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:58:43,315 INFO L842 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 13:59:31,888 INFO L842 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 14:00:23,399 INFO L842 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 14:01:17,912 INFO L842 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 14:02:15,036 INFO L842 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 14:03:15,265 INFO L842 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 14:04:18,853 INFO L842 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 14:05:25,060 INFO L842 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown