/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:45:56,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:45:56,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:45:56,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-12 00:45:56,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-12 00:45:56,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-12 00:45:56,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-12 00:45:56,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-12 00:45:56,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-12 00:45:56,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-12 00:45:56,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-12 00:45:56,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-12 00:45:56,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:45:56,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:45:56,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:45:56,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:45:56,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:45:56,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:45:56,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:45:56,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:45:56,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:45:56,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:45:56,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:45:57,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:45:57,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:45:57,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-12 00:45:57,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-12 00:45:57,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-12 00:45:57,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-12 00:45:57,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-12 00:45:57,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-12 00:45:57,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-12 00:45:57,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-12 00:45:57,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 00:45:57,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 00:45:57,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 00:45:57,211 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-SemanticLbe.epf [2021-03-12 00:45:57,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:45:57,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:45:57,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:45:57,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:45:57,242 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:45:57,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:45:57,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:45:57,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:45:57,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:45:57,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:45:57,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:45:57,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:45:57,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:45:57,243 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:45:57,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:45:57,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:45:57,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:45:57,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:45:57,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:45:57,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:45:57,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:45:57,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:45:57,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:45:57,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:45:57,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:45:57,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:45:57,496 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:45:57,497 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:45:57,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl [2021-03-12 00:45:57,498 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl' [2021-03-12 00:45:57,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:45:57,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:45:57,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:45:57,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:45:57,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:45:57,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:45:57,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:45:57,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:45:57,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:45:57,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/1) ... [2021-03-12 00:45:57,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:45:57,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:45:57,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:45:57,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:45:57,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (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 [2021-03-12 00:45:57,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:45:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:45:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:45:57,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:45:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:45:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:45:57,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:45:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:45:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:45:57,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:45:57,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:45:57,791 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:45:57,792 INFO L202 PluginConnector]: Adding new model figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:45:57 BoogieIcfgContainer [2021-03-12 00:45:57,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:45:57,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:45:57,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:45:57,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:45:57,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:45:57" (1/2) ... [2021-03-12 00:45:57,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dadb5b and model type figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:45:57, skipping insertion in model container [2021-03-12 00:45:57,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:45:57" (2/2) ... [2021-03-12 00:45:57,796 INFO L111 eAbstractionObserver]: Analyzing ICFG figure1-alt.wvr.bpl [2021-03-12 00:45:57,799 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:45:57,801 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:45:57,802 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:45:57,846 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-12 00:45:57,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-12 00:45:57,870 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:45:57,871 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:45:57,871 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:45:57,871 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:45:57,871 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:45:57,871 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:45:57,871 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:45:57,871 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:45:57,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 62 flow [2021-03-12 00:45:57,890 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-12 00:45:57,890 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:45:57,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-12 00:45:57,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 62 flow [2021-03-12 00:45:57,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2021-03-12 00:45:57,897 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:45:57,903 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-12 00:45:57,905 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-12 00:45:57,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-03-12 00:45:57,909 INFO L129 PetriNetUnfolder]: 2/19 cut-off events. [2021-03-12 00:45:57,909 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:45:57,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-12 00:45:57,910 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-12 00:45:58,196 INFO L131 LiptonReduction]: Checked pairs total: 38 [2021-03-12 00:45:58,196 INFO L133 LiptonReduction]: Total number of compositions: 9 [2021-03-12 00:45:58,198 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 304 [2021-03-12 00:45:58,208 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-12 00:45:58,208 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:45:58,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:45:58,209 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:45:58,209 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:45:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:45:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash -488252231, now seen corresponding path program 1 times [2021-03-12 00:45:58,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:45:58,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879699732] [2021-03-12 00:45:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:45:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:45:58,310 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-03-12 00:45:58,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:45:58,331 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-12 00:45:58,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:45:58,341 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:45:58,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:45:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:58,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879699732] [2021-03-12 00:45:58,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:45:58,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:45:58,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218053998] [2021-03-12 00:45:58,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:45:58,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:45:58,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:45:58,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:45:58,363 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:45:58,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 32 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:45:58,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:45:58,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:45:58,420 INFO L129 PetriNetUnfolder]: 12/34 cut-off events. [2021-03-12 00:45:58,420 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-12 00:45:58,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 34 events. 12/34 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 69 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 52. Up to 20 conditions per place. [2021-03-12 00:45:58,421 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 7 selfloop transitions, 5 changer transitions 1/17 dead transitions. [2021-03-12 00:45:58,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 72 flow [2021-03-12 00:45:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:45:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:45:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2021-03-12 00:45:58,430 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.4 [2021-03-12 00:45:58,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 64 transitions. [2021-03-12 00:45:58,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 64 transitions. [2021-03-12 00:45:58,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:45:58,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 64 transitions. [2021-03-12 00:45:58,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,441 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 32 flow. Second operand 5 states and 64 transitions. [2021-03-12 00:45:58,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 72 flow [2021-03-12 00:45:58,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:45:58,446 INFO L241 Difference]: Finished difference. Result has 18 places, 14 transitions, 58 flow [2021-03-12 00:45:58,448 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2021-03-12 00:45:58,448 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 3 predicate places. [2021-03-12 00:45:58,448 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 58 flow [2021-03-12 00:45:58,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,449 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:45:58,449 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:45:58,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:45:58,449 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:45:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:45:58,450 INFO L82 PathProgramCache]: Analyzing trace with hash -490039691, now seen corresponding path program 2 times [2021-03-12 00:45:58,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:45:58,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395384744] [2021-03-12 00:45:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:45:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:45:58,495 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-03-12 00:45:58,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:45:58,516 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:45:58,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:45:58,529 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:45:58,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:45:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:58,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395384744] [2021-03-12 00:45:58,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:45:58,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:45:58,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112029285] [2021-03-12 00:45:58,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:45:58,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:45:58,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:45:58,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:45:58,547 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:45:58,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:45:58,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:45:58,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:45:58,573 INFO L129 PetriNetUnfolder]: 12/29 cut-off events. [2021-03-12 00:45:58,573 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2021-03-12 00:45:58,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 29 events. 12/29 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 51 event pairs, 1 based on Foata normal form. 4/29 useless extension candidates. Maximal degree in co-relation 80. Up to 20 conditions per place. [2021-03-12 00:45:58,576 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 6 selfloop transitions, 6 changer transitions 1/17 dead transitions. [2021-03-12 00:45:58,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 99 flow [2021-03-12 00:45:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:45:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:45:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2021-03-12 00:45:58,579 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.39375 [2021-03-12 00:45:58,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 63 transitions. [2021-03-12 00:45:58,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 63 transitions. [2021-03-12 00:45:58,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:45:58,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 63 transitions. [2021-03-12 00:45:58,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,585 INFO L185 Difference]: Start difference. First operand has 18 places, 14 transitions, 58 flow. Second operand 5 states and 63 transitions. [2021-03-12 00:45:58,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 99 flow [2021-03-12 00:45:58,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 97 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-12 00:45:58,588 INFO L241 Difference]: Finished difference. Result has 23 places, 16 transitions, 90 flow [2021-03-12 00:45:58,591 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2021-03-12 00:45:58,592 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 8 predicate places. [2021-03-12 00:45:58,592 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 90 flow [2021-03-12 00:45:58,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,592 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:45:58,592 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:45:58,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:45:58,592 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:45:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:45:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash 490659304, now seen corresponding path program 1 times [2021-03-12 00:45:58,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:45:58,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692637912] [2021-03-12 00:45:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:45:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:45:58,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:45:58,631 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-03-12 00:45:58,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:45:58,649 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:45:58,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:45:58,659 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:45:58,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:45:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:58,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692637912] [2021-03-12 00:45:58,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783440252] [2021-03-12 00:45:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:45:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:45:58,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-12 00:45:58,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:45:58,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:58,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,745 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-03-12 00:45:58,754 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-03-12 00:45:58,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,774 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:45:58,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:45:58,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:45:58,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:45:58,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:45:58,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,820 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:45:58,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:45:58,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:45:58,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:45:58,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:45:58,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:58,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:58,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:45:58,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-12 00:45:58,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12751397] [2021-03-12 00:45:58,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:45:58,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:45:58,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:45:58,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:45:58,864 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:45:58,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:58,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:45:58,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:45:58,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:45:59,081 INFO L129 PetriNetUnfolder]: 12/44 cut-off events. [2021-03-12 00:45:59,081 INFO L130 PetriNetUnfolder]: For 49/60 co-relation queries the response was YES. [2021-03-12 00:45:59,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 44 events. 12/44 cut-off events. For 49/60 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 127 event pairs, 0 based on Foata normal form. 12/50 useless extension candidates. Maximal degree in co-relation 118. Up to 15 conditions per place. [2021-03-12 00:45:59,083 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 11 selfloop transitions, 10 changer transitions 3/28 dead transitions. [2021-03-12 00:45:59,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 182 flow [2021-03-12 00:45:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:45:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:45:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2021-03-12 00:45:59,087 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.396875 [2021-03-12 00:45:59,087 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 127 transitions. [2021-03-12 00:45:59,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 127 transitions. [2021-03-12 00:45:59,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:45:59,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 127 transitions. [2021-03-12 00:45:59,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:59,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:45:59,089 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:45:59,089 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 90 flow. Second operand 10 states and 127 transitions. [2021-03-12 00:45:59,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 182 flow [2021-03-12 00:45:59,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 165 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-03-12 00:45:59,090 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 128 flow [2021-03-12 00:45:59,090 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=128, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2021-03-12 00:45:59,091 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 19 predicate places. [2021-03-12 00:45:59,091 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 128 flow [2021-03-12 00:45:59,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:59,091 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:45:59,091 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:45:59,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-03-12 00:45:59,292 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:45:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:45:59,292 INFO L82 PathProgramCache]: Analyzing trace with hash 298507354, now seen corresponding path program 2 times [2021-03-12 00:45:59,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:45:59,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965752453] [2021-03-12 00:45:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:45:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:45:59,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:45:59,323 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-03-12 00:45:59,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:45:59,333 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-12 00:45:59,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:45:59,342 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:45:59,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:45:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:59,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965752453] [2021-03-12 00:45:59,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226686112] [2021-03-12 00:45:59,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:45:59,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 00:45:59,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:45:59,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-12 00:45:59,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:45:59,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,399 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:45:59,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:45:59,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:45:59,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:45:59,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:45:59,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,416 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:45:59,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:45:59,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:45:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:45:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:45:59,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:59,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:45:59,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-12 00:45:59,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136988740] [2021-03-12 00:45:59,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:45:59,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:45:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:45:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:45:59,441 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:45:59,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:59,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:45:59,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:45:59,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:45:59,650 INFO L129 PetriNetUnfolder]: 12/46 cut-off events. [2021-03-12 00:45:59,650 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-03-12 00:45:59,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 46 events. 12/46 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 129 event pairs, 0 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 153. Up to 14 conditions per place. [2021-03-12 00:45:59,651 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 10 selfloop transitions, 13 changer transitions 2/29 dead transitions. [2021-03-12 00:45:59,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 240 flow [2021-03-12 00:45:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:45:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:45:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2021-03-12 00:45:59,653 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.390625 [2021-03-12 00:45:59,654 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 125 transitions. [2021-03-12 00:45:59,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 125 transitions. [2021-03-12 00:45:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:45:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 125 transitions. [2021-03-12 00:45:59,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:59,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:45:59,656 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:45:59,656 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 128 flow. Second operand 10 states and 125 transitions. [2021-03-12 00:45:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 240 flow [2021-03-12 00:45:59,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 193 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-03-12 00:45:59,660 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 164 flow [2021-03-12 00:45:59,660 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-03-12 00:45:59,660 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 21 predicate places. [2021-03-12 00:45:59,660 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 164 flow [2021-03-12 00:45:59,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:59,660 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:45:59,660 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:45:59,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:45:59,875 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:45:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:45:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2045151336, now seen corresponding path program 3 times [2021-03-12 00:45:59,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:45:59,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059083280] [2021-03-12 00:45:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:45:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:45:59,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:45:59,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:45:59,899 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-12 00:45:59,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:45:59,912 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:45:59,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:45:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:45:59,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059083280] [2021-03-12 00:45:59,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105164261] [2021-03-12 00:45:59,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:45:59,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-12 00:45:59,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:45:59,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-12 00:45:59,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:45:59,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,968 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-03-12 00:45:59,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:45:59,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:45:59,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:45:59,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:45:59,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,984 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-03-12 00:45:59,985 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-03-12 00:45:59,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:45:59,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:45:59,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,000 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:46:00,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:46:00,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:00,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:00,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:00,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:00,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:46:00,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-12 00:46:00,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072799832] [2021-03-12 00:46:00,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:46:00,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:46:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:46:00,026 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:46:00,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 164 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:00,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:00,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:46:00,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:46:00,136 INFO L129 PetriNetUnfolder]: 12/38 cut-off events. [2021-03-12 00:46:00,136 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-12 00:46:00,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 38 events. 12/38 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 87 event pairs, 0 based on Foata normal form. 2/40 useless extension candidates. Maximal degree in co-relation 146. Up to 14 conditions per place. [2021-03-12 00:46:00,137 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 9 selfloop transitions, 6 changer transitions 10/29 dead transitions. [2021-03-12 00:46:00,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 250 flow [2021-03-12 00:46:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:46:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:46:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2021-03-12 00:46:00,138 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.375 [2021-03-12 00:46:00,138 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 120 transitions. [2021-03-12 00:46:00,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 120 transitions. [2021-03-12 00:46:00,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:46:00,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 120 transitions. [2021-03-12 00:46:00,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:00,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:46:00,139 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:46:00,139 INFO L185 Difference]: Start difference. First operand has 36 places, 24 transitions, 164 flow. Second operand 10 states and 120 transitions. [2021-03-12 00:46:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 250 flow [2021-03-12 00:46:00,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 219 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-12 00:46:00,141 INFO L241 Difference]: Finished difference. Result has 43 places, 18 transitions, 122 flow [2021-03-12 00:46:00,141 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=18} [2021-03-12 00:46:00,141 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 28 predicate places. [2021-03-12 00:46:00,141 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 18 transitions, 122 flow [2021-03-12 00:46:00,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:00,141 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:46:00,141 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:46:00,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:00,358 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:46:00,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:46:00,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1976663239, now seen corresponding path program 1 times [2021-03-12 00:46:00,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:46:00,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100159916] [2021-03-12 00:46:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:46:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:00,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:00,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:00,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:00,399 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:46:00,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:46:00,409 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:46:00,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:46:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:00,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100159916] [2021-03-12 00:46:00,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703813748] [2021-03-12 00:46:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:00,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-12 00:46:00,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:46:00,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:00,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,472 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-03-12 00:46:00,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:00,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:00,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:46:00,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:00,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,502 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-03-12 00:46:00,502 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-03-12 00:46:00,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,518 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:46:00,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:46:00,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:00,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:00,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:00,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:00,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:00,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:46:00,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-12 00:46:00,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210162256] [2021-03-12 00:46:00,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:46:00,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:00,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:46:00,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:46:00,550 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:46:00,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 18 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:00,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:00,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:46:00,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:46:00,766 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2021-03-12 00:46:00,766 INFO L130 PetriNetUnfolder]: For 54/55 co-relation queries the response was YES. [2021-03-12 00:46:00,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 31 events. 8/31 cut-off events. For 54/55 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 110. Up to 10 conditions per place. [2021-03-12 00:46:00,767 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 6 selfloop transitions, 5 changer transitions 8/23 dead transitions. [2021-03-12 00:46:00,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 23 transitions, 190 flow [2021-03-12 00:46:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:46:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:46:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2021-03-12 00:46:00,768 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2021-03-12 00:46:00,768 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 129 transitions. [2021-03-12 00:46:00,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 129 transitions. [2021-03-12 00:46:00,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:46:00,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 129 transitions. [2021-03-12 00:46:00,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:00,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 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) [2021-03-12 00:46:00,771 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 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) [2021-03-12 00:46:00,771 INFO L185 Difference]: Start difference. First operand has 43 places, 18 transitions, 122 flow. Second operand 11 states and 129 transitions. [2021-03-12 00:46:00,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 23 transitions, 190 flow [2021-03-12 00:46:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 151 flow, removed 8 selfloop flow, removed 13 redundant places. [2021-03-12 00:46:00,772 INFO L241 Difference]: Finished difference. Result has 36 places, 14 transitions, 87 flow [2021-03-12 00:46:00,773 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=14} [2021-03-12 00:46:00,773 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 21 predicate places. [2021-03-12 00:46:00,773 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 14 transitions, 87 flow [2021-03-12 00:46:00,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:00,773 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:46:00,773 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:46:00,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:00,978 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:46:00,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:46:00,978 INFO L82 PathProgramCache]: Analyzing trace with hash 579930763, now seen corresponding path program 2 times [2021-03-12 00:46:00,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:46:00,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130659] [2021-03-12 00:46:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:46:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:01,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:01,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:01,013 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-03-12 00:46:01,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:46:01,022 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-12 00:46:01,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:46:01,032 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:46:01,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:46:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:01,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130659] [2021-03-12 00:46:01,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068713888] [2021-03-12 00:46:01,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-12 00:46:01,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 00:46:01,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:46:01,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-12 00:46:01,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:46:01,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:01,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:01,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:46:01,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:46:01,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:01,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:46:01,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:46:01,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,118 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-12 00:46:01,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:46:01,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:01,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:01,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:46:01,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,140 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-12 00:46:01,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:46:01,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:01,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:01,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:46:01,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:01,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:46:01,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-12 00:46:01,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876095032] [2021-03-12 00:46:01,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:46:01,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:01,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:46:01,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:46:01,165 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:46:01,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 14 transitions, 87 flow. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:01,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:01,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:46:01,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:46:01,365 INFO L129 PetriNetUnfolder]: 6/36 cut-off events. [2021-03-12 00:46:01,365 INFO L130 PetriNetUnfolder]: For 86/87 co-relation queries the response was YES. [2021-03-12 00:46:01,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 36 events. 6/36 cut-off events. For 86/87 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 0 based on Foata normal form. 4/40 useless extension candidates. Maximal degree in co-relation 112. Up to 12 conditions per place. [2021-03-12 00:46:01,365 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 8 selfloop transitions, 9 changer transitions 2/23 dead transitions. [2021-03-12 00:46:01,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 186 flow [2021-03-12 00:46:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:46:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:46:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2021-03-12 00:46:01,366 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.378125 [2021-03-12 00:46:01,366 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 121 transitions. [2021-03-12 00:46:01,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 121 transitions. [2021-03-12 00:46:01,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:46:01,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 121 transitions. [2021-03-12 00:46:01,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:01,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:46:01,367 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:46:01,367 INFO L185 Difference]: Start difference. First operand has 36 places, 14 transitions, 87 flow. Second operand 10 states and 121 transitions. [2021-03-12 00:46:01,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 186 flow [2021-03-12 00:46:01,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 156 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-12 00:46:01,368 INFO L241 Difference]: Finished difference. Result has 35 places, 18 transitions, 130 flow [2021-03-12 00:46:01,369 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=130, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2021-03-12 00:46:01,369 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 20 predicate places. [2021-03-12 00:46:01,369 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 130 flow [2021-03-12 00:46:01,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:01,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:46:01,369 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:46:01,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-03-12 00:46:01,582 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:46:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:46:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash 578143303, now seen corresponding path program 3 times [2021-03-12 00:46:01,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:46:01,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082412613] [2021-03-12 00:46:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:46:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:01,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:01,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:01,610 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-03-12 00:46:01,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:46:01,620 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:46:01,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:46:01,629 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:46:01,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:46:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:01,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082412613] [2021-03-12 00:46:01,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342639780] [2021-03-12 00:46:01,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-12 00:46:01,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-12 00:46:01,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:46:01,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-12 00:46:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:01,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:01,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,688 INFO L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-03-12 00:46:01,688 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-03-12 00:46:01,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:01,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,702 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-03-12 00:46:01,703 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-03-12 00:46:01,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,715 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:46:01,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:46:01,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:01,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:01,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,733 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:46:01,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:46:01,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:01,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:01,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:01,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:01,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:01,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:46:01,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-12 00:46:01,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989219388] [2021-03-12 00:46:01,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:46:01,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:01,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:46:01,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:46:01,756 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:46:01,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 130 flow. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:01,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:01,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:46:01,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:46:01,952 INFO L129 PetriNetUnfolder]: 6/28 cut-off events. [2021-03-12 00:46:01,952 INFO L130 PetriNetUnfolder]: For 76/77 co-relation queries the response was YES. [2021-03-12 00:46:01,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 28 events. 6/28 cut-off events. For 76/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 47 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 114. Up to 10 conditions per place. [2021-03-12 00:46:01,953 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 7 selfloop transitions, 7 changer transitions 3/21 dead transitions. [2021-03-12 00:46:01,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 21 transitions, 194 flow [2021-03-12 00:46:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:46:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:46:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2021-03-12 00:46:01,954 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.3625 [2021-03-12 00:46:01,954 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 116 transitions. [2021-03-12 00:46:01,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 116 transitions. [2021-03-12 00:46:01,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:46:01,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 116 transitions. [2021-03-12 00:46:01,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:01,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:46:01,955 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 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) [2021-03-12 00:46:01,955 INFO L185 Difference]: Start difference. First operand has 35 places, 18 transitions, 130 flow. Second operand 10 states and 116 transitions. [2021-03-12 00:46:01,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 21 transitions, 194 flow [2021-03-12 00:46:01,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 21 transitions, 155 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-03-12 00:46:01,956 INFO L241 Difference]: Finished difference. Result has 39 places, 18 transitions, 118 flow [2021-03-12 00:46:01,956 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=118, PETRI_PLACES=39, PETRI_TRANSITIONS=18} [2021-03-12 00:46:01,956 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 24 predicate places. [2021-03-12 00:46:01,956 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 18 transitions, 118 flow [2021-03-12 00:46:01,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:01,956 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:46:01,956 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:46:02,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:02,164 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:46:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:46:02,165 INFO L82 PathProgramCache]: Analyzing trace with hash 799085782, now seen corresponding path program 4 times [2021-03-12 00:46:02,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:46:02,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007554759] [2021-03-12 00:46:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:46:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:02,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:02,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:02,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:02,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:46:02,199 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-12 00:46:02,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:46:02,208 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-12 00:46:02,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:46:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:02,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007554759] [2021-03-12 00:46:02,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96640159] [2021-03-12 00:46:02,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:02,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 00:46:02,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:46:02,231 WARN L261 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-12 00:46:02,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:46:02,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:46:02,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,260 INFO L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-03-12 00:46:02,260 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-03-12 00:46:02,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:02,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:02,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:02,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-03-12 00:46:02,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:02,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:02,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:46:02,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:02,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:46:02,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,299 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-12 00:46:02,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:46:02,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 00:46:02,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:02,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:46:02,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:02,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:46:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:02,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:46:02,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-03-12 00:46:02,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628319434] [2021-03-12 00:46:02,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-12 00:46:02,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-12 00:46:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-03-12 00:46:02,321 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2021-03-12 00:46:02,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 18 transitions, 118 flow. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:02,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:02,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2021-03-12 00:46:02,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:46:02,538 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-03-12 00:46:02,538 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-12 00:46:02,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 25 events. 6/25 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 97. Up to 9 conditions per place. [2021-03-12 00:46:02,538 INFO L132 encePairwiseOnDemand]: 26/32 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-03-12 00:46:02,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 21 transitions, 182 flow [2021-03-12 00:46:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-12 00:46:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-12 00:46:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2021-03-12 00:46:02,539 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.359375 [2021-03-12 00:46:02,539 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 138 transitions. [2021-03-12 00:46:02,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 138 transitions. [2021-03-12 00:46:02,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:46:02,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 138 transitions. [2021-03-12 00:46:02,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:02,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:02,540 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:02,540 INFO L185 Difference]: Start difference. First operand has 39 places, 18 transitions, 118 flow. Second operand 12 states and 138 transitions. [2021-03-12 00:46:02,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 21 transitions, 182 flow [2021-03-12 00:46:02,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 21 transitions, 152 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-12 00:46:02,541 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-12 00:46:02,541 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-12 00:46:02,541 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 24 predicate places. [2021-03-12 00:46:02,541 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-03-12 00:46:02,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:02,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:46:02,751 INFO L202 PluginConnector]: Adding new model figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:46:02 BasicIcfg [2021-03-12 00:46:02,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:46:02,751 INFO L168 Benchmark]: Toolchain (without parser) took 5224.40 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 236.4 MB in the beginning and 180.0 MB in the end (delta: 56.4 MB). Peak memory consumption was 180.7 MB. Max. memory is 16.0 GB. [2021-03-12 00:46:02,751 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.5 MB in the beginning and 237.3 MB in the end (delta: 174.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:46:02,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.68 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:46:02,751 INFO L168 Benchmark]: Boogie Preprocessor took 11.79 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.5 MB in the end (delta: 925.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:46:02,751 INFO L168 Benchmark]: RCFGBuilder took 226.01 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 240.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-12 00:46:02,751 INFO L168 Benchmark]: TraceAbstraction took 4957.99 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 239.7 MB in the beginning and 180.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 183.4 MB. Max. memory is 16.0 GB. [2021-03-12 00:46:02,752 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 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.5 MB in the beginning and 237.3 MB in the end (delta: 174.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.68 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.79 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.5 MB in the end (delta: 925.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 226.01 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 240.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4957.99 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 239.7 MB in the beginning and 180.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 183.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 291.8ms, 24 PlacesBefore, 15 PlacesAfterwards, 19 TransitionsBefore, 10 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 3 FixpointIterations, 5 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 38, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 51]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4880.7ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 1545.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 333.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 132 SDslu, 0 SDs, 0 SdLazy, 439 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 260.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1578.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=4, InterpolantAutomatonStates: 83, 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: 22.0ms SsaConstructionTime, 90.8ms SatisfiabilityAnalysisTime, 1207.1ms InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 1951 SizeOfPredicates, 14 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/26 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...