/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 15:11:05,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 15:11:05,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 15:11:05,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 15:11:05,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 15:11:05,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 15:11:05,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 15:11:05,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 15:11:05,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 15:11:05,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 15:11:05,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 15:11:05,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 15:11:05,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 15:11:05,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 15:11:05,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 15:11:05,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 15:11:05,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 15:11:05,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 15:11:05,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 15:11:05,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 15:11:05,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 15:11:05,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 15:11:05,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 15:11:05,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 15:11:05,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 15:11:05,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 15:11:05,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 15:11:05,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 15:11:05,208 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-VariableLbe.epf [2021-03-24 15:11:05,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 15:11:05,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 15:11:05,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 15:11:05,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 15:11:05,250 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 15:11:05,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 15:11:05,250 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 15:11:05,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 15:11:05,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 15:11:05,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 15:11:05,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 15:11:05,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 15:11:05,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 15:11:05,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 15:11:05,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 15:11:05,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 15:11:05,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 15:11:05,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 15:11:05,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 15:11:05,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 15:11:05,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 15:11:05,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:11:05,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 15:11:05,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 15:11:05,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 15:11:05,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 15:11:05,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 15:11:05,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 15:11:05,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 15:11:05,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 15:11:05,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 15:11:05,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 15:11:05,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 15:11:05,575 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 15:11:05,575 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 15:11:05,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-03-24 15:11:05,586 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-03-24 15:11:05,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 15:11:05,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 15:11:05,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 15:11:05,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 15:11:05,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 15:11:05,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 15:11:05,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 15:11:05,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 15:11:05,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 15:11:05,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/1) ... [2021-03-24 15:11:05,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 15:11:05,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 15:11:05,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 15:11:05,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 15:11:05,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (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 [2021-03-24 15:11:05,720 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 15:11:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 15:11:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 15:11:05,720 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 15:11:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 15:11:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 15:11:05,721 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 15:11:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 15:11:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 15:11:05,721 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-24 15:11:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 15:11:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 15:11:05,722 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 15:11:05,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 15:11:05,953 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 15:11:05,954 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:11:05 BoogieIcfgContainer [2021-03-24 15:11:05,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 15:11:05,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 15:11:05,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 15:11:05,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 15:11:05,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:05" (1/2) ... [2021-03-24 15:11:05,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b5ad80 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 03:11:05, skipping insertion in model container [2021-03-24 15:11:05,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:11:05" (2/2) ... [2021-03-24 15:11:05,960 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-03-24 15:11:05,964 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 15:11:05,981 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 15:11:05,982 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 15:11:06,018 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-24 15:11:06,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 15:11:06,050 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 15:11:06,050 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 15:11:06,050 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 15:11:06,050 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 15:11:06,051 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 15:11:06,051 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 15:11:06,051 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 15:11:06,051 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 15:11:06,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 106 flow [2021-03-24 15:11:06,102 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-24 15:11:06,102 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:11:06,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 15:11:06,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 106 flow [2021-03-24 15:11:06,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 36 transitions, 90 flow [2021-03-24 15:11:06,109 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 15:11:06,138 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 36 transitions, 90 flow [2021-03-24 15:11:06,140 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 36 transitions, 90 flow [2021-03-24 15:11:06,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 36 transitions, 90 flow [2021-03-24 15:11:06,171 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-24 15:11:06,171 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:11:06,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 0/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 15:11:06,174 INFO L142 LiptonReduction]: Number of co-enabled transitions 412 [2021-03-24 15:11:06,350 INFO L154 LiptonReduction]: Checked pairs total: 1322 [2021-03-24 15:11:06,350 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-24 15:11:06,352 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 244 [2021-03-24 15:11:06,363 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-24 15:11:06,363 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:11:06,364 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:06,364 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:06,365 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash -400902158, now seen corresponding path program 1 times [2021-03-24 15:11:06,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:06,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527573176] [2021-03-24 15:11:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:06,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:06,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:06,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:06,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:06,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:06,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:06,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527573176] [2021-03-24 15:11:06,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:06,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:06,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792189646] [2021-03-24 15:11:06,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:06,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:06,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:06,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:06,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:06,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:06,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:06,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:06,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:06,813 INFO L129 PetriNetUnfolder]: 15/93 cut-off events. [2021-03-24 15:11:06,814 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 15:11:06,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 93 events. 15/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 354 event pairs, 1 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 134. Up to 23 conditions per place. [2021-03-24 15:11:06,817 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 12 selfloop transitions, 11 changer transitions 2/46 dead transitions. [2021-03-24 15:11:06,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 160 flow [2021-03-24 15:11:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 350 transitions. [2021-03-24 15:11:06,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2021-03-24 15:11:06,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 350 transitions. [2021-03-24 15:11:06,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 350 transitions. [2021-03-24 15:11:06,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:06,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 350 transitions. [2021-03-24 15:11:06,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.888888888888886) internal successors, (350), 9 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) [2021-03-24 15:11:06,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:06,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:06,870 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 74 flow. Second operand 9 states and 350 transitions. [2021-03-24 15:11:06,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 160 flow [2021-03-24 15:11:06,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-24 15:11:06,886 INFO L241 Difference]: Finished difference. Result has 44 places, 38 transitions, 127 flow [2021-03-24 15:11:06,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=127, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2021-03-24 15:11:06,889 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2021-03-24 15:11:06,889 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 127 flow [2021-03-24 15:11:06,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:06,889 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:06,889 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:06,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 15:11:06,890 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:06,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:06,891 INFO L82 PathProgramCache]: Analyzing trace with hash -706202102, now seen corresponding path program 2 times [2021-03-24 15:11:06,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:06,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241550584] [2021-03-24 15:11:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:06,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:06,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:06,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:06,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:06,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:06,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:06,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:11:07,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:07,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241550584] [2021-03-24 15:11:07,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:07,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:11:07,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104974231] [2021-03-24 15:11:07,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:07,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:07,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:07,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:07,021 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:07,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:07,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:07,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:07,194 INFO L129 PetriNetUnfolder]: 78/315 cut-off events. [2021-03-24 15:11:07,195 INFO L130 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2021-03-24 15:11:07,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 315 events. 78/315 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1924 event pairs, 8 based on Foata normal form. 2/302 useless extension candidates. Maximal degree in co-relation 586. Up to 45 conditions per place. [2021-03-24 15:11:07,199 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 19 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2021-03-24 15:11:07,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 253 flow [2021-03-24 15:11:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2021-03-24 15:11:07,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-24 15:11:07,201 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 343 transitions. [2021-03-24 15:11:07,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 343 transitions. [2021-03-24 15:11:07,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:07,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 343 transitions. [2021-03-24 15:11:07,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.111111111111114) internal successors, (343), 9 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,205 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,205 INFO L185 Difference]: Start difference. First operand has 44 places, 38 transitions, 127 flow. Second operand 9 states and 343 transitions. [2021-03-24 15:11:07,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 253 flow [2021-03-24 15:11:07,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 251 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-24 15:11:07,208 INFO L241 Difference]: Finished difference. Result has 55 places, 55 transitions, 241 flow [2021-03-24 15:11:07,208 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=241, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2021-03-24 15:11:07,209 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2021-03-24 15:11:07,209 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 241 flow [2021-03-24 15:11:07,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:07,209 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:07,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 15:11:07,210 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:07,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash 201367850, now seen corresponding path program 3 times [2021-03-24 15:11:07,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:07,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599399018] [2021-03-24 15:11:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:07,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:07,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:07,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599399018] [2021-03-24 15:11:07,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:07,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:07,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860487907] [2021-03-24 15:11:07,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:07,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:07,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:07,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:07,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:07,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 241 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:07,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:07,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:07,404 INFO L129 PetriNetUnfolder]: 99/414 cut-off events. [2021-03-24 15:11:07,404 INFO L130 PetriNetUnfolder]: For 188/207 co-relation queries the response was YES. [2021-03-24 15:11:07,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 414 events. 99/414 cut-off events. For 188/207 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2773 event pairs, 5 based on Foata normal form. 10/413 useless extension candidates. Maximal degree in co-relation 942. Up to 78 conditions per place. [2021-03-24 15:11:07,408 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 21 selfloop transitions, 11 changer transitions 2/72 dead transitions. [2021-03-24 15:11:07,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 377 flow [2021-03-24 15:11:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 352 transitions. [2021-03-24 15:11:07,410 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7981859410430839 [2021-03-24 15:11:07,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 352 transitions. [2021-03-24 15:11:07,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 352 transitions. [2021-03-24 15:11:07,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:07,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 352 transitions. [2021-03-24 15:11:07,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.111111111111114) internal successors, (352), 9 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,413 INFO L185 Difference]: Start difference. First operand has 55 places, 55 transitions, 241 flow. Second operand 9 states and 352 transitions. [2021-03-24 15:11:07,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 377 flow [2021-03-24 15:11:07,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 15:11:07,418 INFO L241 Difference]: Finished difference. Result has 69 places, 61 transitions, 319 flow [2021-03-24 15:11:07,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=319, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2021-03-24 15:11:07,419 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2021-03-24 15:11:07,419 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 319 flow [2021-03-24 15:11:07,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:07,419 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:07,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 15:11:07,419 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:07,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1762629156, now seen corresponding path program 4 times [2021-03-24 15:11:07,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:07,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043133589] [2021-03-24 15:11:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:07,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:07,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:07,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:07,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043133589] [2021-03-24 15:11:07,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:07,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:11:07,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198557466] [2021-03-24 15:11:07,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:11:07,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:07,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:11:07,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:11:07,436 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 49 [2021-03-24 15:11:07,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2021-03-24 15:11:07,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:07,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 49 [2021-03-24 15:11:07,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:07,463 INFO L129 PetriNetUnfolder]: 40/292 cut-off events. [2021-03-24 15:11:07,463 INFO L130 PetriNetUnfolder]: For 139/152 co-relation queries the response was YES. [2021-03-24 15:11:07,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 292 events. 40/292 cut-off events. For 139/152 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1907 event pairs, 1 based on Foata normal form. 7/286 useless extension candidates. Maximal degree in co-relation 653. Up to 45 conditions per place. [2021-03-24 15:11:07,466 INFO L132 encePairwiseOnDemand]: 46/49 looper letters, 2 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2021-03-24 15:11:07,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 321 flow [2021-03-24 15:11:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:11:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:11:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2021-03-24 15:11:07,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9115646258503401 [2021-03-24 15:11:07,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 134 transitions. [2021-03-24 15:11:07,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 134 transitions. [2021-03-24 15:11:07,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:07,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 134 transitions. [2021-03-24 15:11:07,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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) [2021-03-24 15:11:07,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2021-03-24 15:11:07,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2021-03-24 15:11:07,468 INFO L185 Difference]: Start difference. First operand has 69 places, 61 transitions, 319 flow. Second operand 3 states and 134 transitions. [2021-03-24 15:11:07,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 321 flow [2021-03-24 15:11:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 302 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 15:11:07,473 INFO L241 Difference]: Finished difference. Result has 66 places, 60 transitions, 302 flow [2021-03-24 15:11:07,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2021-03-24 15:11:07,473 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2021-03-24 15:11:07,473 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 302 flow [2021-03-24 15:11:07,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2021-03-24 15:11:07,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:07,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:07,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 15:11:07,474 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1038371146, now seen corresponding path program 5 times [2021-03-24 15:11:07,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:07,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197410780] [2021-03-24 15:11:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:07,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:07,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:07,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:07,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197410780] [2021-03-24 15:11:07,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:07,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:07,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321989430] [2021-03-24 15:11:07,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:07,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:07,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:07,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:07,547 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:07,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:07,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:07,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:07,717 INFO L129 PetriNetUnfolder]: 75/460 cut-off events. [2021-03-24 15:11:07,717 INFO L130 PetriNetUnfolder]: For 315/327 co-relation queries the response was YES. [2021-03-24 15:11:07,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 460 events. 75/460 cut-off events. For 315/327 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3503 event pairs, 5 based on Foata normal form. 14/454 useless extension candidates. Maximal degree in co-relation 1068. Up to 98 conditions per place. [2021-03-24 15:11:07,721 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 17 selfloop transitions, 19 changer transitions 2/75 dead transitions. [2021-03-24 15:11:07,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 458 flow [2021-03-24 15:11:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 350 transitions. [2021-03-24 15:11:07,722 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2021-03-24 15:11:07,723 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 350 transitions. [2021-03-24 15:11:07,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 350 transitions. [2021-03-24 15:11:07,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:07,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 350 transitions. [2021-03-24 15:11:07,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.888888888888886) internal successors, (350), 9 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) [2021-03-24 15:11:07,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,725 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,725 INFO L185 Difference]: Start difference. First operand has 66 places, 60 transitions, 302 flow. Second operand 9 states and 350 transitions. [2021-03-24 15:11:07,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 458 flow [2021-03-24 15:11:07,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:11:07,730 INFO L241 Difference]: Finished difference. Result has 77 places, 69 transitions, 424 flow [2021-03-24 15:11:07,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2021-03-24 15:11:07,730 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2021-03-24 15:11:07,730 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 424 flow [2021-03-24 15:11:07,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,731 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:07,731 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:07,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 15:11:07,731 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:07,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2007824732, now seen corresponding path program 6 times [2021-03-24 15:11:07,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:07,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277349290] [2021-03-24 15:11:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:07,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:07,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:07,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277349290] [2021-03-24 15:11:07,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:07,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:07,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829867881] [2021-03-24 15:11:07,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:07,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:07,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:07,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:07,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:07,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:07,924 INFO L129 PetriNetUnfolder]: 72/483 cut-off events. [2021-03-24 15:11:07,924 INFO L130 PetriNetUnfolder]: For 565/593 co-relation queries the response was YES. [2021-03-24 15:11:07,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 483 events. 72/483 cut-off events. For 565/593 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3842 event pairs, 3 based on Foata normal form. 22/487 useless extension candidates. Maximal degree in co-relation 1332. Up to 133 conditions per place. [2021-03-24 15:11:07,929 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 27 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2021-03-24 15:11:07,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 582 flow [2021-03-24 15:11:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:11:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:11:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 386 transitions. [2021-03-24 15:11:07,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7877551020408163 [2021-03-24 15:11:07,932 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 386 transitions. [2021-03-24 15:11:07,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 386 transitions. [2021-03-24 15:11:07,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:07,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 386 transitions. [2021-03-24 15:11:07,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.6) internal successors, (386), 10 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 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) [2021-03-24 15:11:07,934 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 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) [2021-03-24 15:11:07,934 INFO L185 Difference]: Start difference. First operand has 77 places, 69 transitions, 424 flow. Second operand 10 states and 386 transitions. [2021-03-24 15:11:07,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 582 flow [2021-03-24 15:11:07,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 556 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 15:11:07,941 INFO L241 Difference]: Finished difference. Result has 83 places, 77 transitions, 502 flow [2021-03-24 15:11:07,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=502, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2021-03-24 15:11:07,942 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2021-03-24 15:11:07,942 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 502 flow [2021-03-24 15:11:07,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:07,943 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:07,943 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:07,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 15:11:07,944 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:07,944 INFO L82 PathProgramCache]: Analyzing trace with hash -62983742, now seen corresponding path program 7 times [2021-03-24 15:11:07,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:07,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970658713] [2021-03-24 15:11:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:07,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:07,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:08,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:08,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:08,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970658713] [2021-03-24 15:11:08,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:08,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376747513] [2021-03-24 15:11:08,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:08,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:08,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:08,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:08,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 502 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:08,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:08,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:08,163 INFO L129 PetriNetUnfolder]: 66/513 cut-off events. [2021-03-24 15:11:08,163 INFO L130 PetriNetUnfolder]: For 661/697 co-relation queries the response was YES. [2021-03-24 15:11:08,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 513 events. 66/513 cut-off events. For 661/697 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4242 event pairs, 3 based on Foata normal form. 21/515 useless extension candidates. Maximal degree in co-relation 1420. Up to 81 conditions per place. [2021-03-24 15:11:08,167 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 35 selfloop transitions, 20 changer transitions 2/94 dead transitions. [2021-03-24 15:11:08,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 756 flow [2021-03-24 15:11:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 352 transitions. [2021-03-24 15:11:08,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7981859410430839 [2021-03-24 15:11:08,169 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 352 transitions. [2021-03-24 15:11:08,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 352 transitions. [2021-03-24 15:11:08,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 352 transitions. [2021-03-24 15:11:08,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.111111111111114) internal successors, (352), 9 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,172 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,172 INFO L185 Difference]: Start difference. First operand has 83 places, 77 transitions, 502 flow. Second operand 9 states and 352 transitions. [2021-03-24 15:11:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 756 flow [2021-03-24 15:11:08,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 713 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-24 15:11:08,181 INFO L241 Difference]: Finished difference. Result has 94 places, 84 transitions, 615 flow [2021-03-24 15:11:08,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=615, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2021-03-24 15:11:08,181 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 56 predicate places. [2021-03-24 15:11:08,181 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 615 flow [2021-03-24 15:11:08,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,182 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:08,182 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:08,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 15:11:08,182 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1297909826, now seen corresponding path program 8 times [2021-03-24 15:11:08,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:08,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967165769] [2021-03-24 15:11:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:08,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:08,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:11:08,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:08,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967165769] [2021-03-24 15:11:08,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:08,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:08,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791103036] [2021-03-24 15:11:08,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:08,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:08,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:08,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:08,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:08,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 615 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:08,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:08,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:08,531 INFO L129 PetriNetUnfolder]: 170/990 cut-off events. [2021-03-24 15:11:08,531 INFO L130 PetriNetUnfolder]: For 1968/2130 co-relation queries the response was YES. [2021-03-24 15:11:08,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 990 events. 170/990 cut-off events. For 1968/2130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9487 event pairs, 3 based on Foata normal form. 41/1008 useless extension candidates. Maximal degree in co-relation 3293. Up to 165 conditions per place. [2021-03-24 15:11:08,540 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 40 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2021-03-24 15:11:08,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 915 flow [2021-03-24 15:11:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2021-03-24 15:11:08,542 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-24 15:11:08,542 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 343 transitions. [2021-03-24 15:11:08,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 343 transitions. [2021-03-24 15:11:08,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:08,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 343 transitions. [2021-03-24 15:11:08,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.111111111111114) internal successors, (343), 9 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,544 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,544 INFO L185 Difference]: Start difference. First operand has 94 places, 84 transitions, 615 flow. Second operand 9 states and 343 transitions. [2021-03-24 15:11:08,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 915 flow [2021-03-24 15:11:08,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 872 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 15:11:08,567 INFO L241 Difference]: Finished difference. Result has 101 places, 98 transitions, 739 flow [2021-03-24 15:11:08,567 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=739, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2021-03-24 15:11:08,568 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2021-03-24 15:11:08,568 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 739 flow [2021-03-24 15:11:08,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:08,568 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:08,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 15:11:08,569 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash 452033726, now seen corresponding path program 9 times [2021-03-24 15:11:08,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:08,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334389410] [2021-03-24 15:11:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:08,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:08,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:08,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:11:08,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:08,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334389410] [2021-03-24 15:11:08,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:08,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:08,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287886472] [2021-03-24 15:11:08,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:08,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:08,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:08,667 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:08,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:08,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:08,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:08,919 INFO L129 PetriNetUnfolder]: 205/1105 cut-off events. [2021-03-24 15:11:08,919 INFO L130 PetriNetUnfolder]: For 3127/3341 co-relation queries the response was YES. [2021-03-24 15:11:08,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 1105 events. 205/1105 cut-off events. For 3127/3341 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10690 event pairs, 15 based on Foata normal form. 66/1136 useless extension candidates. Maximal degree in co-relation 3957. Up to 187 conditions per place. [2021-03-24 15:11:08,929 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 37 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2021-03-24 15:11:08,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 120 transitions, 1018 flow [2021-03-24 15:11:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2021-03-24 15:11:08,931 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.780045351473923 [2021-03-24 15:11:08,931 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 344 transitions. [2021-03-24 15:11:08,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 344 transitions. [2021-03-24 15:11:08,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:08,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 344 transitions. [2021-03-24 15:11:08,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.22222222222222) internal successors, (344), 9 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,934 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,934 INFO L185 Difference]: Start difference. First operand has 101 places, 98 transitions, 739 flow. Second operand 9 states and 344 transitions. [2021-03-24 15:11:08,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 120 transitions, 1018 flow [2021-03-24 15:11:08,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 120 transitions, 1008 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-03-24 15:11:08,963 INFO L241 Difference]: Finished difference. Result has 113 places, 109 transitions, 907 flow [2021-03-24 15:11:08,964 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=907, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2021-03-24 15:11:08,964 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2021-03-24 15:11:08,964 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 907 flow [2021-03-24 15:11:08,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:08,964 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:08,965 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:08,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 15:11:08,965 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1798721420, now seen corresponding path program 10 times [2021-03-24 15:11:08,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:08,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009650569] [2021-03-24 15:11:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:08,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:08,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:08,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:09,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:09,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:09,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:11:09,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:09,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009650569] [2021-03-24 15:11:09,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:09,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:11:09,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673993985] [2021-03-24 15:11:09,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:09,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:09,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:09,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:09,042 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:09,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 907 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:09,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:09,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:09,261 INFO L129 PetriNetUnfolder]: 213/1103 cut-off events. [2021-03-24 15:11:09,261 INFO L130 PetriNetUnfolder]: For 4173/4349 co-relation queries the response was YES. [2021-03-24 15:11:09,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4570 conditions, 1103 events. 213/1103 cut-off events. For 4173/4349 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10600 event pairs, 6 based on Foata normal form. 79/1174 useless extension candidates. Maximal degree in co-relation 4356. Up to 218 conditions per place. [2021-03-24 15:11:09,272 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 30 selfloop transitions, 45 changer transitions 0/134 dead transitions. [2021-03-24 15:11:09,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 134 transitions, 1271 flow [2021-03-24 15:11:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 341 transitions. [2021-03-24 15:11:09,273 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7732426303854876 [2021-03-24 15:11:09,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 341 transitions. [2021-03-24 15:11:09,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 341 transitions. [2021-03-24 15:11:09,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:09,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 341 transitions. [2021-03-24 15:11:09,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.888888888888886) internal successors, (341), 9 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,277 INFO L185 Difference]: Start difference. First operand has 113 places, 109 transitions, 907 flow. Second operand 9 states and 341 transitions. [2021-03-24 15:11:09,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 134 transitions, 1271 flow [2021-03-24 15:11:09,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 134 transitions, 1236 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-24 15:11:09,314 INFO L241 Difference]: Finished difference. Result has 124 places, 123 transitions, 1175 flow [2021-03-24 15:11:09,315 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1175, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2021-03-24 15:11:09,315 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 86 predicate places. [2021-03-24 15:11:09,315 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 1175 flow [2021-03-24 15:11:09,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,315 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:09,315 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:09,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 15:11:09,316 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1575366618, now seen corresponding path program 11 times [2021-03-24 15:11:09,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:09,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919756883] [2021-03-24 15:11:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:09,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:09,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919756883] [2021-03-24 15:11:09,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:09,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:11:09,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892122444] [2021-03-24 15:11:09,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:11:09,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:09,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:11:09,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:11:09,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 49 [2021-03-24 15:11:09,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 1175 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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) [2021-03-24 15:11:09,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:09,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 49 [2021-03-24 15:11:09,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:09,424 INFO L129 PetriNetUnfolder]: 130/798 cut-off events. [2021-03-24 15:11:09,424 INFO L130 PetriNetUnfolder]: For 3012/3052 co-relation queries the response was YES. [2021-03-24 15:11:09,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 798 events. 130/798 cut-off events. For 3012/3052 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7298 event pairs, 2 based on Foata normal form. 32/825 useless extension candidates. Maximal degree in co-relation 3069. Up to 152 conditions per place. [2021-03-24 15:11:09,431 INFO L132 encePairwiseOnDemand]: 46/49 looper letters, 2 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2021-03-24 15:11:09,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 118 transitions, 1113 flow [2021-03-24 15:11:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:11:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:11:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2021-03-24 15:11:09,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.891156462585034 [2021-03-24 15:11:09,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2021-03-24 15:11:09,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2021-03-24 15:11:09,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:09,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2021-03-24 15:11:09,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 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) [2021-03-24 15:11:09,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2021-03-24 15:11:09,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2021-03-24 15:11:09,434 INFO L185 Difference]: Start difference. First operand has 124 places, 123 transitions, 1175 flow. Second operand 3 states and 131 transitions. [2021-03-24 15:11:09,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 118 transitions, 1113 flow [2021-03-24 15:11:09,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 1058 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 15:11:09,465 INFO L241 Difference]: Finished difference. Result has 123 places, 118 transitions, 1058 flow [2021-03-24 15:11:09,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2021-03-24 15:11:09,465 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 85 predicate places. [2021-03-24 15:11:09,465 INFO L480 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 1058 flow [2021-03-24 15:11:09,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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) [2021-03-24 15:11:09,465 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:09,466 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:09,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 15:11:09,466 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:09,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1975293438, now seen corresponding path program 12 times [2021-03-24 15:11:09,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:09,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205158130] [2021-03-24 15:11:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:09,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:09,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205158130] [2021-03-24 15:11:09,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:09,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:09,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098547140] [2021-03-24 15:11:09,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:09,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:09,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:09,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 1058 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:09,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:09,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:09,771 INFO L129 PetriNetUnfolder]: 135/828 cut-off events. [2021-03-24 15:11:09,772 INFO L130 PetriNetUnfolder]: For 4027/4173 co-relation queries the response was YES. [2021-03-24 15:11:09,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 828 events. 135/828 cut-off events. For 4027/4173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7531 event pairs, 4 based on Foata normal form. 71/898 useless extension candidates. Maximal degree in co-relation 3381. Up to 152 conditions per place. [2021-03-24 15:11:09,780 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 48 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2021-03-24 15:11:09,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 130 transitions, 1309 flow [2021-03-24 15:11:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2021-03-24 15:11:09,782 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.780045351473923 [2021-03-24 15:11:09,782 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 344 transitions. [2021-03-24 15:11:09,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 344 transitions. [2021-03-24 15:11:09,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:09,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 344 transitions. [2021-03-24 15:11:09,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.22222222222222) internal successors, (344), 9 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,785 INFO L185 Difference]: Start difference. First operand has 123 places, 118 transitions, 1058 flow. Second operand 9 states and 344 transitions. [2021-03-24 15:11:09,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 130 transitions, 1309 flow [2021-03-24 15:11:09,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1305 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:11:09,809 INFO L241 Difference]: Finished difference. Result has 132 places, 122 transitions, 1166 flow [2021-03-24 15:11:09,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1166, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2021-03-24 15:11:09,809 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2021-03-24 15:11:09,809 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 1166 flow [2021-03-24 15:11:09,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:09,810 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:09,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 15:11:09,810 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:09,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:09,810 INFO L82 PathProgramCache]: Analyzing trace with hash 284671338, now seen corresponding path program 13 times [2021-03-24 15:11:09,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:09,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434431420] [2021-03-24 15:11:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:09,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:09,868 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-24 15:11:09,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:11:09,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:09,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:09,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434431420] [2021-03-24 15:11:09,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:09,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:09,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581983921] [2021-03-24 15:11:09,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:09,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:09,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:09,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:09,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 1166 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:09,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:09,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:09,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:10,117 INFO L129 PetriNetUnfolder]: 102/768 cut-off events. [2021-03-24 15:11:10,117 INFO L130 PetriNetUnfolder]: For 4456/4611 co-relation queries the response was YES. [2021-03-24 15:11:10,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 768 events. 102/768 cut-off events. For 4456/4611 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7023 event pairs, 4 based on Foata normal form. 75/842 useless extension candidates. Maximal degree in co-relation 3176. Up to 136 conditions per place. [2021-03-24 15:11:10,125 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 43 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2021-03-24 15:11:10,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 128 transitions, 1350 flow [2021-03-24 15:11:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 341 transitions. [2021-03-24 15:11:10,128 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7732426303854876 [2021-03-24 15:11:10,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 341 transitions. [2021-03-24 15:11:10,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 341 transitions. [2021-03-24 15:11:10,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:10,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 341 transitions. [2021-03-24 15:11:10,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.888888888888886) internal successors, (341), 9 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,132 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,132 INFO L185 Difference]: Start difference. First operand has 132 places, 122 transitions, 1166 flow. Second operand 9 states and 341 transitions. [2021-03-24 15:11:10,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 128 transitions, 1350 flow [2021-03-24 15:11:10,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 128 transitions, 1313 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 15:11:10,158 INFO L241 Difference]: Finished difference. Result has 137 places, 120 transitions, 1163 flow [2021-03-24 15:11:10,158 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1163, PETRI_PLACES=137, PETRI_TRANSITIONS=120} [2021-03-24 15:11:10,159 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 99 predicate places. [2021-03-24 15:11:10,159 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 120 transitions, 1163 flow [2021-03-24 15:11:10,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:10,160 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:10,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 15:11:10,160 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:10,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1317704596, now seen corresponding path program 14 times [2021-03-24 15:11:10,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:10,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523290936] [2021-03-24 15:11:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:10,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:10,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,229 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-24 15:11:10,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:10,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523290936] [2021-03-24 15:11:10,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:10,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:10,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95647912] [2021-03-24 15:11:10,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:10,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:10,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:10,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:10,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:10,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 120 transitions, 1163 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:10,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:10,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:10,438 INFO L129 PetriNetUnfolder]: 79/620 cut-off events. [2021-03-24 15:11:10,439 INFO L130 PetriNetUnfolder]: For 3165/3245 co-relation queries the response was YES. [2021-03-24 15:11:10,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 620 events. 79/620 cut-off events. For 3165/3245 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5305 event pairs, 4 based on Foata normal form. 35/654 useless extension candidates. Maximal degree in co-relation 2559. Up to 119 conditions per place. [2021-03-24 15:11:10,445 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 47 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2021-03-24 15:11:10,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 126 transitions, 1341 flow [2021-03-24 15:11:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2021-03-24 15:11:10,446 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-24 15:11:10,446 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 343 transitions. [2021-03-24 15:11:10,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 343 transitions. [2021-03-24 15:11:10,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:10,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 343 transitions. [2021-03-24 15:11:10,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.111111111111114) internal successors, (343), 9 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,448 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,448 INFO L185 Difference]: Start difference. First operand has 137 places, 120 transitions, 1163 flow. Second operand 9 states and 343 transitions. [2021-03-24 15:11:10,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 126 transitions, 1341 flow [2021-03-24 15:11:10,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 126 transitions, 1277 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-24 15:11:10,469 INFO L241 Difference]: Finished difference. Result has 139 places, 118 transitions, 1125 flow [2021-03-24 15:11:10,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1125, PETRI_PLACES=139, PETRI_TRANSITIONS=118} [2021-03-24 15:11:10,469 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 101 predicate places. [2021-03-24 15:11:10,469 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 118 transitions, 1125 flow [2021-03-24 15:11:10,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,470 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:10,470 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:10,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 15:11:10,470 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:10,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1332418180, now seen corresponding path program 15 times [2021-03-24 15:11:10,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:10,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839164813] [2021-03-24 15:11:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:10,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:10,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839164813] [2021-03-24 15:11:10,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:10,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:10,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811710567] [2021-03-24 15:11:10,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:10,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:10,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:10,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:10,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 118 transitions, 1125 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:10,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:10,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:10,662 INFO L129 PetriNetUnfolder]: 93/642 cut-off events. [2021-03-24 15:11:10,662 INFO L130 PetriNetUnfolder]: For 2501/2568 co-relation queries the response was YES. [2021-03-24 15:11:10,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 642 events. 93/642 cut-off events. For 2501/2568 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5528 event pairs, 18 based on Foata normal form. 68/705 useless extension candidates. Maximal degree in co-relation 2582. Up to 181 conditions per place. [2021-03-24 15:11:10,668 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 27 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2021-03-24 15:11:10,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 120 transitions, 1232 flow [2021-03-24 15:11:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 349 transitions. [2021-03-24 15:11:10,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7913832199546486 [2021-03-24 15:11:10,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 349 transitions. [2021-03-24 15:11:10,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 349 transitions. [2021-03-24 15:11:10,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:10,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 349 transitions. [2021-03-24 15:11:10,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.77777777777778) internal successors, (349), 9 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,672 INFO L185 Difference]: Start difference. First operand has 139 places, 118 transitions, 1125 flow. Second operand 9 states and 349 transitions. [2021-03-24 15:11:10,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 120 transitions, 1232 flow [2021-03-24 15:11:10,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 120 transitions, 1186 flow, removed 1 selfloop flow, removed 8 redundant places. [2021-03-24 15:11:10,690 INFO L241 Difference]: Finished difference. Result has 140 places, 118 transitions, 1126 flow [2021-03-24 15:11:10,691 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1126, PETRI_PLACES=140, PETRI_TRANSITIONS=118} [2021-03-24 15:11:10,691 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 102 predicate places. [2021-03-24 15:11:10,691 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 118 transitions, 1126 flow [2021-03-24 15:11:10,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:10,691 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:10,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 15:11:10,692 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:10,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1097449354, now seen corresponding path program 16 times [2021-03-24 15:11:10,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:10,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586431281] [2021-03-24 15:11:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:10,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:10,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:10,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586431281] [2021-03-24 15:11:10,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:10,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:10,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488755652] [2021-03-24 15:11:10,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:10,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:10,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:10,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:10,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:10,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 118 transitions, 1126 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:10,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:10,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:10,899 INFO L129 PetriNetUnfolder]: 93/638 cut-off events. [2021-03-24 15:11:10,900 INFO L130 PetriNetUnfolder]: For 2451/2505 co-relation queries the response was YES. [2021-03-24 15:11:10,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 638 events. 93/638 cut-off events. For 2451/2505 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5470 event pairs, 18 based on Foata normal form. 55/688 useless extension candidates. Maximal degree in co-relation 2633. Up to 201 conditions per place. [2021-03-24 15:11:10,905 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 26 selfloop transitions, 13 changer transitions 27/119 dead transitions. [2021-03-24 15:11:10,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 119 transitions, 1227 flow [2021-03-24 15:11:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:11:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:11:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 312 transitions. [2021-03-24 15:11:10,906 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-03-24 15:11:10,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 312 transitions. [2021-03-24 15:11:10,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 312 transitions. [2021-03-24 15:11:10,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:10,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 312 transitions. [2021-03-24 15:11:10,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,911 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,912 INFO L185 Difference]: Start difference. First operand has 140 places, 118 transitions, 1126 flow. Second operand 8 states and 312 transitions. [2021-03-24 15:11:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 119 transitions, 1227 flow [2021-03-24 15:11:10,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 119 transitions, 1114 flow, removed 11 selfloop flow, removed 12 redundant places. [2021-03-24 15:11:10,927 INFO L241 Difference]: Finished difference. Result has 136 places, 91 transitions, 804 flow [2021-03-24 15:11:10,928 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=136, PETRI_TRANSITIONS=91} [2021-03-24 15:11:10,928 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 98 predicate places. [2021-03-24 15:11:10,928 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 91 transitions, 804 flow [2021-03-24 15:11:10,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,928 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:10,928 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:10,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 15:11:10,929 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1644874486, now seen corresponding path program 17 times [2021-03-24 15:11:10,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:10,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486360503] [2021-03-24 15:11:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:10,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:10,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:10,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:10,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486360503] [2021-03-24 15:11:10,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:10,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:10,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337571403] [2021-03-24 15:11:10,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:10,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:10,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:10,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:10,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:10,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 91 transitions, 804 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:10,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:10,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:10,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:11,088 INFO L129 PetriNetUnfolder]: 62/454 cut-off events. [2021-03-24 15:11:11,089 INFO L130 PetriNetUnfolder]: For 1653/1684 co-relation queries the response was YES. [2021-03-24 15:11:11,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 454 events. 62/454 cut-off events. For 1653/1684 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3497 event pairs, 3 based on Foata normal form. 34/487 useless extension candidates. Maximal degree in co-relation 1816. Up to 120 conditions per place. [2021-03-24 15:11:11,092 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 26 selfloop transitions, 19 changer transitions 0/98 dead transitions. [2021-03-24 15:11:11,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 98 transitions, 950 flow [2021-03-24 15:11:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:11:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:11:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 384 transitions. [2021-03-24 15:11:11,094 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7836734693877551 [2021-03-24 15:11:11,094 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 384 transitions. [2021-03-24 15:11:11,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 384 transitions. [2021-03-24 15:11:11,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:11,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 384 transitions. [2021-03-24 15:11:11,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 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) [2021-03-24 15:11:11,096 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 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) [2021-03-24 15:11:11,096 INFO L185 Difference]: Start difference. First operand has 136 places, 91 transitions, 804 flow. Second operand 10 states and 384 transitions. [2021-03-24 15:11:11,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 98 transitions, 950 flow [2021-03-24 15:11:11,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 98 transitions, 841 flow, removed 11 selfloop flow, removed 23 redundant places. [2021-03-24 15:11:11,107 INFO L241 Difference]: Finished difference. Result has 112 places, 96 transitions, 796 flow [2021-03-24 15:11:11,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=796, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2021-03-24 15:11:11,107 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 74 predicate places. [2021-03-24 15:11:11,107 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 796 flow [2021-03-24 15:11:11,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,108 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:11,108 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:11,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 15:11:11,108 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:11,108 INFO L82 PathProgramCache]: Analyzing trace with hash -125806366, now seen corresponding path program 18 times [2021-03-24 15:11:11,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:11,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977049382] [2021-03-24 15:11:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:11,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:11,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:11,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:11,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:11,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:11,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:11,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977049382] [2021-03-24 15:11:11,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:11,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:11,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811664893] [2021-03-24 15:11:11,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:11,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:11,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:11,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:11,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:11,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:11,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:11,255 INFO L129 PetriNetUnfolder]: 62/450 cut-off events. [2021-03-24 15:11:11,256 INFO L130 PetriNetUnfolder]: For 1291/1330 co-relation queries the response was YES. [2021-03-24 15:11:11,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 450 events. 62/450 cut-off events. For 1291/1330 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3453 event pairs, 3 based on Foata normal form. 42/491 useless extension candidates. Maximal degree in co-relation 1699. Up to 109 conditions per place. [2021-03-24 15:11:11,259 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 24 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2021-03-24 15:11:11,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 98 transitions, 895 flow [2021-03-24 15:11:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:11:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:11:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 347 transitions. [2021-03-24 15:11:11,260 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7868480725623582 [2021-03-24 15:11:11,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 347 transitions. [2021-03-24 15:11:11,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 347 transitions. [2021-03-24 15:11:11,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:11,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 347 transitions. [2021-03-24 15:11:11,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.55555555555556) internal successors, (347), 9 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,262 INFO L185 Difference]: Start difference. First operand has 112 places, 96 transitions, 796 flow. Second operand 9 states and 347 transitions. [2021-03-24 15:11:11,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 98 transitions, 895 flow [2021-03-24 15:11:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 98 transitions, 843 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 15:11:11,273 INFO L241 Difference]: Finished difference. Result has 116 places, 96 transitions, 789 flow [2021-03-24 15:11:11,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=789, PETRI_PLACES=116, PETRI_TRANSITIONS=96} [2021-03-24 15:11:11,273 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2021-03-24 15:11:11,273 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 96 transitions, 789 flow [2021-03-24 15:11:11,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,274 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:11,274 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:11,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 15:11:11,274 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:11,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:11,274 INFO L82 PathProgramCache]: Analyzing trace with hash 483482294, now seen corresponding path program 19 times [2021-03-24 15:11:11,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:11,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509158664] [2021-03-24 15:11:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:11,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:11,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:11,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:11,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 15:11:11,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:11:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:11,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509158664] [2021-03-24 15:11:11,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:11,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:11:11,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955652057] [2021-03-24 15:11:11,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:11:11,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:11:11,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:11:11,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 49 [2021-03-24 15:11:11,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 96 transitions, 789 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:11,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 49 [2021-03-24 15:11:11,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:11,421 INFO L129 PetriNetUnfolder]: 62/446 cut-off events. [2021-03-24 15:11:11,421 INFO L130 PetriNetUnfolder]: For 1113/1148 co-relation queries the response was YES. [2021-03-24 15:11:11,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 446 events. 62/446 cut-off events. For 1113/1148 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3411 event pairs, 3 based on Foata normal form. 38/483 useless extension candidates. Maximal degree in co-relation 1689. Up to 128 conditions per place. [2021-03-24 15:11:11,424 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 12 changer transitions 35/97 dead transitions. [2021-03-24 15:11:11,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 97 transitions, 882 flow [2021-03-24 15:11:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:11:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:11:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 310 transitions. [2021-03-24 15:11:11,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-03-24 15:11:11,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 310 transitions. [2021-03-24 15:11:11,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 310 transitions. [2021-03-24 15:11:11,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:11,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 310 transitions. [2021-03-24 15:11:11,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.75) internal successors, (310), 8 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,427 INFO L185 Difference]: Start difference. First operand has 116 places, 96 transitions, 789 flow. Second operand 8 states and 310 transitions. [2021-03-24 15:11:11,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 97 transitions, 882 flow [2021-03-24 15:11:11,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 97 transitions, 773 flow, removed 11 selfloop flow, removed 12 redundant places. [2021-03-24 15:11:11,435 INFO L241 Difference]: Finished difference. Result has 112 places, 61 transitions, 423 flow [2021-03-24 15:11:11,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=112, PETRI_TRANSITIONS=61} [2021-03-24 15:11:11,436 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 74 predicate places. [2021-03-24 15:11:11,436 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 61 transitions, 423 flow [2021-03-24 15:11:11,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,436 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:11,436 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:11,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 15:11:11,436 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1504634662, now seen corresponding path program 20 times [2021-03-24 15:11:11,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:11,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130353470] [2021-03-24 15:11:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:11,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:11,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,484 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-24 15:11:11,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:11:11,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:11,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130353470] [2021-03-24 15:11:11,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:11,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:11,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247241374] [2021-03-24 15:11:11,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:11,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:11,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:11,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:11,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:11,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 61 transitions, 423 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:11,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:11,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:11,607 INFO L129 PetriNetUnfolder]: 13/168 cut-off events. [2021-03-24 15:11:11,607 INFO L130 PetriNetUnfolder]: For 498/518 co-relation queries the response was YES. [2021-03-24 15:11:11,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 168 events. 13/168 cut-off events. For 498/518 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 943 event pairs, 1 based on Foata normal form. 9/172 useless extension candidates. Maximal degree in co-relation 611. Up to 34 conditions per place. [2021-03-24 15:11:11,608 INFO L132 encePairwiseOnDemand]: 41/49 looper letters, 5 selfloop transitions, 5 changer transitions 4/60 dead transitions. [2021-03-24 15:11:11,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 60 transitions, 445 flow [2021-03-24 15:11:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:11:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:11:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2021-03-24 15:11:11,610 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7295918367346939 [2021-03-24 15:11:11,610 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 286 transitions. [2021-03-24 15:11:11,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 286 transitions. [2021-03-24 15:11:11,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:11,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 286 transitions. [2021-03-24 15:11:11,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,612 INFO L185 Difference]: Start difference. First operand has 112 places, 61 transitions, 423 flow. Second operand 8 states and 286 transitions. [2021-03-24 15:11:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 60 transitions, 445 flow [2021-03-24 15:11:11,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 340 flow, removed 7 selfloop flow, removed 26 redundant places. [2021-03-24 15:11:11,616 INFO L241 Difference]: Finished difference. Result has 76 places, 56 transitions, 298 flow [2021-03-24 15:11:11,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=298, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2021-03-24 15:11:11,616 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2021-03-24 15:11:11,616 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 298 flow [2021-03-24 15:11:11,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:11,620 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:11,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 15:11:11,621 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:11,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1980056816, now seen corresponding path program 21 times [2021-03-24 15:11:11,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:11,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942865615] [2021-03-24 15:11:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:11,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:11,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:11,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942865615] [2021-03-24 15:11:11,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:11,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:11,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779966121] [2021-03-24 15:11:11,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:11,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:11,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:11,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:11,693 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:11,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:11,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:11,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:11,781 INFO L129 PetriNetUnfolder]: 12/159 cut-off events. [2021-03-24 15:11:11,782 INFO L130 PetriNetUnfolder]: For 248/268 co-relation queries the response was YES. [2021-03-24 15:11:11,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 159 events. 12/159 cut-off events. For 248/268 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 901 event pairs, 0 based on Foata normal form. 13/172 useless extension candidates. Maximal degree in co-relation 458. Up to 33 conditions per place. [2021-03-24 15:11:11,782 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 2 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2021-03-24 15:11:11,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 57 transitions, 330 flow [2021-03-24 15:11:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:11:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:11:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2021-03-24 15:11:11,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2021-03-24 15:11:11,784 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2021-03-24 15:11:11,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2021-03-24 15:11:11,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:11,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2021-03-24 15:11:11,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,797 INFO L185 Difference]: Start difference. First operand has 76 places, 56 transitions, 298 flow. Second operand 8 states and 284 transitions. [2021-03-24 15:11:11,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 57 transitions, 330 flow [2021-03-24 15:11:11,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 299 flow, removed 3 selfloop flow, removed 11 redundant places. [2021-03-24 15:11:11,800 INFO L241 Difference]: Finished difference. Result has 68 places, 57 transitions, 302 flow [2021-03-24 15:11:11,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2021-03-24 15:11:11,800 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2021-03-24 15:11:11,800 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 302 flow [2021-03-24 15:11:11,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:11,801 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:11,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 15:11:11,801 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:11,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1622852558, now seen corresponding path program 22 times [2021-03-24 15:11:11,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:11,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550936304] [2021-03-24 15:11:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:11,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:11,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,862 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-24 15:11:11,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:11:11,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:11,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:11:11,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550936304] [2021-03-24 15:11:11,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:11,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:11:11,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723050234] [2021-03-24 15:11:11,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:11:11,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:11:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:11:11,874 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 49 [2021-03-24 15:11:11,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:11,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 49 [2021-03-24 15:11:11,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:11,965 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-24 15:11:11,965 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-24 15:11:11,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 28 events. 0/28 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 15:11:11,966 INFO L132 encePairwiseOnDemand]: 42/49 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-03-24 15:11:11,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 28 transitions, 146 flow [2021-03-24 15:11:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:11:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:11:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2021-03-24 15:11:11,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-03-24 15:11:11,967 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 280 transitions. [2021-03-24 15:11:11,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 280 transitions. [2021-03-24 15:11:11,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:11,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 280 transitions. [2021-03-24 15:11:11,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,970 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,970 INFO L185 Difference]: Start difference. First operand has 68 places, 57 transitions, 302 flow. Second operand 8 states and 280 transitions. [2021-03-24 15:11:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 28 transitions, 146 flow [2021-03-24 15:11:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 11 redundant places. [2021-03-24 15:11:11,970 INFO L241 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2021-03-24 15:11:11,971 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2021-03-24 15:11:11,971 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2021-03-24 15:11:11,971 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2021-03-24 15:11:11,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:11:11,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 15:11:11,974 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 03:11:11 BasicIcfg [2021-03-24 15:11:11,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 15:11:11,975 INFO L168 Benchmark]: Toolchain (without parser) took 6353.40 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 236.8 MB in the beginning and 390.7 MB in the end (delta: -154.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:11,975 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:11:11,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.91 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:11,976 INFO L168 Benchmark]: Boogie Preprocessor took 11.70 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 871.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:11:11,976 INFO L168 Benchmark]: RCFGBuilder took 292.06 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 238.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:11,977 INFO L168 Benchmark]: TraceAbstraction took 6019.16 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 237.6 MB in the beginning and 390.7 MB in the end (delta: -153.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:11,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.91 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.70 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 871.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 292.06 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 238.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6019.16 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 237.6 MB in the beginning and 390.7 MB in the end (delta: -153.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 209.8ms, 46 PlacesBefore, 38 PlacesAfterwards, 36 TransitionsBefore, 28 TransitionsAfterwards, 412 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 1322 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 564, positive: 470, positive conditional: 0, positive unconditional: 470, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 179, positive: 163, positive conditional: 0, positive unconditional: 163, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 179, positive: 163, positive conditional: 0, positive unconditional: 163, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 564, positive: 307, positive conditional: 0, positive unconditional: 307, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 179, unknown conditional: 0, unknown unconditional: 179] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 81, Positive conditional cache size: 0, Positive unconditional cache size: 81, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5925.1ms, OverallIterations: 22, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4009.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 305.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 153 SDtfs, 326 SDslu, 116 SDs, 0 SdLazy, 1410 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 720.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1530.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1175occurred in iteration=10, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.1ms SsaConstructionTime, 119.0ms SatisfiabilityAnalysisTime, 1227.1ms InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 594 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...