/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 23:38:19,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 23:38:19,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 23:38:19,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 23:38:19,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 23:38:19,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 23:38:19,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 23:38:19,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 23:38:19,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 23:38:19,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 23:38:19,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 23:38:19,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 23:38:19,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 23:38:19,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 23:38:19,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 23:38:19,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 23:38:19,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 23:38:19,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 23:38:19,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 23:38:19,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 23:38:19,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 23:38:19,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 23:38:19,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 23:38:19,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 23:38:19,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 23:38:19,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 23:38:19,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 23:38:19,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 23:38:19,159 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-NoLbe-MCR.epf [2020-01-16 23:38:19,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 23:38:19,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 23:38:19,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 23:38:19,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 23:38:19,184 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 23:38:19,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 23:38:19,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 23:38:19,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 23:38:19,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 23:38:19,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 23:38:19,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 23:38:19,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 23:38:19,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 23:38:19,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 23:38:19,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 23:38:19,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 23:38:19,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 23:38:19,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 23:38:19,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 23:38:19,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 23:38:19,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 23:38:19,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 23:38:19,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 23:38:19,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 23:38:19,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 23:38:19,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 23:38:19,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 23:38:19,190 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 23:38:19,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 23:38:19,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 23:38:19,192 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 23:38:19,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 23:38:19,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 23:38:19,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 23:38:19,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 23:38:19,506 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 23:38:19,507 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 23:38:19,508 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-01-16 23:38:19,508 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-01-16 23:38:19,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 23:38:19,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 23:38:19,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 23:38:19,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 23:38:19,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 23:38:19,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 23:38:19,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 23:38:19,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 23:38:19,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 23:38:19,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/1) ... [2020-01-16 23:38:19,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 23:38:19,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 23:38:19,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 23:38:19,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 23:38:19,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (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 [2020-01-16 23:38:19,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 23:38:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 23:38:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 23:38:19,679 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 23:38:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 23:38:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 23:38:19,682 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 23:38:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 23:38:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 23:38:19,683 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 23:38:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 23:38:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 23:38:19,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 23:38:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 23:38:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 23:38:19,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 23:38:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 23:38:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 23:38:19,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 23:38:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 23:38:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 23:38:19,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 23:38:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 23:38:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 23:38:19,695 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 23:38:19,938 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 23:38:19,939 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 23:38:19,940 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:38:19 BoogieIcfgContainer [2020-01-16 23:38:19,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 23:38:19,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 23:38:19,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 23:38:19,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 23:38:19,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:38:19" (1/2) ... [2020-01-16 23:38:19,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153bd8f9 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 11:38:19, skipping insertion in model container [2020-01-16 23:38:19,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:38:19" (2/2) ... [2020-01-16 23:38:19,948 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-01-16 23:38:19,958 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 23:38:19,964 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 23:38:19,965 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 23:38:20,120 INFO L250 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-01-16 23:38:20,137 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 23:38:20,143 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 23:38:20,143 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 23:38:20,143 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 23:38:20,143 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 23:38:20,144 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 23:38:20,144 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 23:38:20,144 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 23:38:20,406 INFO L129 PetriNetUnfolder]: 321/469 cut-off events. [2020-01-16 23:38:20,406 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-01-16 23:38:20,406 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:38:20,407 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:38:20,408 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:38:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:38:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1937343623, now seen corresponding path program 1 times [2020-01-16 23:38:20,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:38:20,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252281766] [2020-01-16 23:38:20,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:38:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:38:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:38:20,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252281766] [2020-01-16 23:38:20,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:38:20,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:38:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [999947126] [2020-01-16 23:38:20,612 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:38:20,630 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:38:21,366 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:38:21,367 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:38:21,412 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 10 times. [2020-01-16 23:38:21,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:38:21,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:21,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:38:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:38:21,433 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2020-01-16 23:38:21,436 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 80 transitions. Second operand 3 states. [2020-01-16 23:38:21,436 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:21,436 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2020-01-16 23:38:21,438 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:21,553 INFO L129 PetriNetUnfolder]: 225/354 cut-off events. [2020-01-16 23:38:21,553 INFO L130 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2020-01-16 23:38:21,564 INFO L76 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 354 events. 225/354 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1318 event pairs. 22/375 useless extension candidates. Maximal degree in co-relation 407. Up to 105 conditions per place. [2020-01-16 23:38:21,565 INFO L123 encePairwiseOnDemand]: 76/80 looper letters, 4 selfloop transitions, 4 changer transitions [2020-01-16 23:38:21,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:38:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:38:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2020-01-16 23:38:21,572 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 23:38:21,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2020-01-16 23:38:21,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2020-01-16 23:38:21,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:38:21,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2020-01-16 23:38:21,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:38:21,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:38:21,589 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:38:21,591 INFO L174 Difference]: Start difference. First operand has 60 places, 80 transitions. Second operand 3 states and 224 transitions. [2020-01-16 23:38:21,594 INFO L199 Difference]: Finished difference. Result has 62 places, 70 transitions [2020-01-16 23:38:21,596 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=62, PETRI_TRANSITIONS=70} [2020-01-16 23:38:21,598 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 62 places, 70 transitions [2020-01-16 23:38:21,598 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 70 transitions [2020-01-16 23:38:21,651 INFO L129 PetriNetUnfolder]: 225/354 cut-off events. [2020-01-16 23:38:21,652 INFO L130 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2020-01-16 23:38:21,656 INFO L76 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 354 events. 225/354 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1231 event pairs. 0/353 useless extension candidates. Maximal degree in co-relation 686. Up to 105 conditions per place. [2020-01-16 23:38:21,666 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 9 of 62 places, 0 of 70 transitions, 2 of 301 flow. [2020-01-16 23:38:21,668 INFO L478 AbstractCegarLoop]: Abstraction has has 53 places, 70 transitions [2020-01-16 23:38:21,668 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:38:21,713 INFO L129 PetriNetUnfolder]: 225/351 cut-off events. [2020-01-16 23:38:21,714 INFO L130 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2020-01-16 23:38:21,714 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:38:21,714 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:38:21,715 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:38:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:38:21,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1948315809, now seen corresponding path program 1 times [2020-01-16 23:38:21,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:38:21,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101607997] [2020-01-16 23:38:21,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:38:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:38:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:38:21,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101607997] [2020-01-16 23:38:21,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:38:21,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:38:21,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2067551588] [2020-01-16 23:38:21,804 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:38:21,808 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:38:22,491 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:38:22,491 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:38:22,520 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 23:38:22,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:38:22,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:38:22,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:38:22,524 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2020-01-16 23:38:22,524 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 70 transitions. Second operand 3 states. [2020-01-16 23:38:22,524 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:22,525 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2020-01-16 23:38:22,525 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:22,604 INFO L129 PetriNetUnfolder]: 200/323 cut-off events. [2020-01-16 23:38:22,605 INFO L130 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2020-01-16 23:38:22,608 INFO L76 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 323 events. 200/323 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1223 event pairs. 6/328 useless extension candidates. Maximal degree in co-relation 371. Up to 105 conditions per place. [2020-01-16 23:38:22,609 INFO L123 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 3 changer transitions [2020-01-16 23:38:22,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:38:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:38:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2020-01-16 23:38:22,613 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 23:38:22,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2020-01-16 23:38:22,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2020-01-16 23:38:22,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:38:22,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2020-01-16 23:38:22,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:38:22,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:38:22,619 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:38:22,624 INFO L174 Difference]: Start difference. First operand has 53 places, 70 transitions. Second operand 3 states and 224 transitions. [2020-01-16 23:38:22,627 INFO L199 Difference]: Finished difference. Result has 55 places, 68 transitions [2020-01-16 23:38:22,628 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=55, PETRI_TRANSITIONS=68} [2020-01-16 23:38:22,629 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 55 places, 68 transitions [2020-01-16 23:38:22,636 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 55 places, 68 transitions [2020-01-16 23:38:22,689 INFO L129 PetriNetUnfolder]: 200/323 cut-off events. [2020-01-16 23:38:22,689 INFO L130 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2020-01-16 23:38:22,693 INFO L76 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 323 events. 200/323 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1155 event pairs. 0/322 useless extension candidates. Maximal degree in co-relation 626. Up to 105 conditions per place. [2020-01-16 23:38:22,696 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 55 places, 0 of 68 transitions, 1 of 291 flow. [2020-01-16 23:38:22,697 INFO L478 AbstractCegarLoop]: Abstraction has has 54 places, 68 transitions [2020-01-16 23:38:22,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:38:22,746 INFO L129 PetriNetUnfolder]: 200/320 cut-off events. [2020-01-16 23:38:22,746 INFO L130 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2020-01-16 23:38:22,747 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:38:22,747 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:38:22,747 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:38:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:38:22,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2127605057, now seen corresponding path program 1 times [2020-01-16 23:38:22,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:38:22,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578816964] [2020-01-16 23:38:22,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:38:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:38:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:38:22,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578816964] [2020-01-16 23:38:22,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:38:22,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:38:22,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [362105303] [2020-01-16 23:38:22,805 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:38:22,808 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:38:23,259 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:38:23,260 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:38:23,286 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2020-01-16 23:38:23,286 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:38:23,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:38:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:38:23,288 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2020-01-16 23:38:23,288 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 68 transitions. Second operand 3 states. [2020-01-16 23:38:23,288 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:23,288 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2020-01-16 23:38:23,288 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:23,321 INFO L129 PetriNetUnfolder]: 64/137 cut-off events. [2020-01-16 23:38:23,321 INFO L130 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2020-01-16 23:38:23,323 INFO L76 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 137 events. 64/137 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs. 36/172 useless extension candidates. Maximal degree in co-relation 217. Up to 30 conditions per place. [2020-01-16 23:38:23,323 INFO L123 encePairwiseOnDemand]: 74/80 looper letters, 2 selfloop transitions, 6 changer transitions [2020-01-16 23:38:23,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:38:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:38:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2020-01-16 23:38:23,325 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 23:38:23,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2020-01-16 23:38:23,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2020-01-16 23:38:23,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:38:23,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2020-01-16 23:38:23,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:38:23,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:38:23,327 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:38:23,327 INFO L174 Difference]: Start difference. First operand has 54 places, 68 transitions. Second operand 3 states and 224 transitions. [2020-01-16 23:38:23,328 INFO L199 Difference]: Finished difference. Result has 56 places, 63 transitions [2020-01-16 23:38:23,328 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2020-01-16 23:38:23,328 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 56 places, 63 transitions [2020-01-16 23:38:23,328 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 63 transitions [2020-01-16 23:38:23,345 INFO L129 PetriNetUnfolder]: 64/137 cut-off events. [2020-01-16 23:38:23,345 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-01-16 23:38:23,347 INFO L76 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 137 events. 64/137 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 414 event pairs. 0/136 useless extension candidates. Maximal degree in co-relation 245. Up to 30 conditions per place. [2020-01-16 23:38:23,348 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 56 places, 0 of 63 transitions, 1 of 267 flow. [2020-01-16 23:38:23,348 INFO L478 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions [2020-01-16 23:38:23,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:38:23,365 INFO L129 PetriNetUnfolder]: 64/134 cut-off events. [2020-01-16 23:38:23,366 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-01-16 23:38:23,366 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:38:23,366 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:38:23,366 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:38:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:38:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash -149698753, now seen corresponding path program 1 times [2020-01-16 23:38:23,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:38:23,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836214160] [2020-01-16 23:38:23,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:38:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:38:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:38:23,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836214160] [2020-01-16 23:38:23,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:38:23,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:38:23,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [354474192] [2020-01-16 23:38:23,398 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:38:23,402 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:38:23,739 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:38:23,740 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:38:23,756 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 23:38:23,757 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:38:23,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:38:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:38:23,758 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2020-01-16 23:38:23,759 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions. Second operand 3 states. [2020-01-16 23:38:23,759 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:23,759 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2020-01-16 23:38:23,759 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:23,779 INFO L129 PetriNetUnfolder]: 12/54 cut-off events. [2020-01-16 23:38:23,779 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2020-01-16 23:38:23,780 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 54 events. 12/54 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs. 17/70 useless extension candidates. Maximal degree in co-relation 74. Up to 8 conditions per place. [2020-01-16 23:38:23,781 INFO L123 encePairwiseOnDemand]: 73/80 looper letters, 1 selfloop transitions, 7 changer transitions [2020-01-16 23:38:23,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:38:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:38:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2020-01-16 23:38:23,782 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2020-01-16 23:38:23,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2020-01-16 23:38:23,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2020-01-16 23:38:23,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:38:23,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2020-01-16 23:38:23,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:38:23,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:38:23,784 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:38:23,784 INFO L174 Difference]: Start difference. First operand has 55 places, 63 transitions. Second operand 3 states and 224 transitions. [2020-01-16 23:38:23,785 INFO L199 Difference]: Finished difference. Result has 57 places, 46 transitions [2020-01-16 23:38:23,785 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2020-01-16 23:38:23,786 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 57 places, 46 transitions [2020-01-16 23:38:23,786 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 46 transitions [2020-01-16 23:38:23,793 INFO L129 PetriNetUnfolder]: 12/54 cut-off events. [2020-01-16 23:38:23,794 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-01-16 23:38:23,794 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 54 events. 12/54 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs. 0/53 useless extension candidates. Maximal degree in co-relation 76. Up to 8 conditions per place. [2020-01-16 23:38:23,795 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 57 places, 0 of 46 transitions, 1 of 183 flow. [2020-01-16 23:38:23,795 INFO L478 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions [2020-01-16 23:38:23,795 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:38:23,802 INFO L129 PetriNetUnfolder]: 12/51 cut-off events. [2020-01-16 23:38:23,803 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-01-16 23:38:23,803 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:38:23,803 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:38:23,803 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:38:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:38:23,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1530990637, now seen corresponding path program 1 times [2020-01-16 23:38:23,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:38:23,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964660178] [2020-01-16 23:38:23,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:38:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:38:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:38:23,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964660178] [2020-01-16 23:38:23,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:38:23,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:38:23,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1758981240] [2020-01-16 23:38:23,830 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:38:23,833 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:38:24,437 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:38:24,437 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:38:24,453 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-01-16 23:38:24,453 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:38:24,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:24,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:38:24,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:38:24,456 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2020-01-16 23:38:24,456 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions. Second operand 3 states. [2020-01-16 23:38:24,456 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:24,456 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2020-01-16 23:38:24,457 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:24,474 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2020-01-16 23:38:24,475 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-01-16 23:38:24,475 INFO L76 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 33 events. 1/33 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2020-01-16 23:38:24,476 INFO L123 encePairwiseOnDemand]: 75/80 looper letters, 1 selfloop transitions, 5 changer transitions [2020-01-16 23:38:24,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:38:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:38:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-01-16 23:38:24,477 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.925 [2020-01-16 23:38:24,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2020-01-16 23:38:24,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2020-01-16 23:38:24,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:38:24,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2020-01-16 23:38:24,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:38:24,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:38:24,479 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:38:24,479 INFO L174 Difference]: Start difference. First operand has 56 places, 46 transitions. Second operand 3 states and 222 transitions. [2020-01-16 23:38:24,480 INFO L199 Difference]: Finished difference. Result has 58 places, 33 transitions [2020-01-16 23:38:24,480 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=33} [2020-01-16 23:38:24,480 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 58 places, 33 transitions [2020-01-16 23:38:24,480 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 33 transitions [2020-01-16 23:38:24,486 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2020-01-16 23:38:24,486 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-01-16 23:38:24,487 INFO L76 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 33 events. 1/33 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs. 0/32 useless extension candidates. Maximal degree in co-relation 40. Up to 3 conditions per place. [2020-01-16 23:38:24,490 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 58 places, 0 of 33 transitions, 1 of 119 flow. [2020-01-16 23:38:24,490 INFO L478 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions [2020-01-16 23:38:24,491 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:38:24,496 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2020-01-16 23:38:24,496 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-01-16 23:38:24,496 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:38:24,496 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:38:24,496 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:38:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:38:24,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1180965809, now seen corresponding path program 1 times [2020-01-16 23:38:24,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:38:24,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200088770] [2020-01-16 23:38:24,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:38:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:38:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:38:25,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200088770] [2020-01-16 23:38:25,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:38:25,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 23:38:25,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [232447663] [2020-01-16 23:38:25,150 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:38:25,152 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:38:25,522 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:38:25,522 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:38:41,468 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 322 times. [2020-01-16 23:38:41,469 INFO L458 AbstractCegarLoop]: Interpolant automaton has 189 states [2020-01-16 23:38:41,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:38:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2020-01-16 23:38:41,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3138, Invalid=32394, Unknown=0, NotChecked=0, Total=35532 [2020-01-16 23:38:41,491 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 80 [2020-01-16 23:38:41,495 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions. Second operand 189 states. [2020-01-16 23:38:41,495 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:38:41,495 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 80 [2020-01-16 23:38:41,495 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:38:46,852 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:38:47,066 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-01-16 23:38:47,285 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-01-16 23:38:47,513 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:38:47,719 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:38:47,954 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-01-16 23:38:48,173 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:38:50,250 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-01-16 23:38:50,664 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-01-16 23:38:53,547 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:38:56,148 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-01-16 23:38:56,539 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:38:57,135 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-01-16 23:38:57,688 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-01-16 23:38:59,785 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:39:01,040 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:01,902 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-01-16 23:39:03,509 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-01-16 23:39:03,756 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-01-16 23:39:04,215 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-01-16 23:39:04,636 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:04,912 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-01-16 23:39:05,374 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-01-16 23:39:05,828 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-01-16 23:39:07,721 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:39:08,238 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-01-16 23:39:09,230 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:39:09,745 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-01-16 23:39:11,245 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-01-16 23:39:11,605 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:11,886 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-01-16 23:39:12,295 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:39:12,637 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-01-16 23:39:13,072 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-01-16 23:39:13,334 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-01-16 23:39:13,745 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-01-16 23:39:15,470 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-01-16 23:39:16,305 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-01-16 23:39:16,872 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:39:18,121 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2020-01-16 23:39:18,401 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-01-16 23:39:18,667 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-01-16 23:39:18,863 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-01-16 23:39:19,061 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 23 [2020-01-16 23:39:19,320 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:19,623 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2020-01-16 23:39:19,903 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:39:20,238 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-01-16 23:39:20,508 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:20,828 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 35 [2020-01-16 23:39:21,094 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-01-16 23:39:21,346 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-01-16 23:39:21,764 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-01-16 23:39:22,784 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-01-16 23:39:23,218 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-01-16 23:39:24,441 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:24,641 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-01-16 23:39:24,922 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-01-16 23:39:25,227 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:25,528 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-01-16 23:39:25,810 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-01-16 23:39:28,355 INFO L129 PetriNetUnfolder]: 1312/2330 cut-off events. [2020-01-16 23:39:28,356 INFO L130 PetriNetUnfolder]: For 1274/1321 co-relation queries the response was YES. [2020-01-16 23:39:28,373 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 2330 events. 1312/2330 cut-off events. For 1274/1321 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 14797 event pairs. 26/2355 useless extension candidates. Maximal degree in co-relation 4560. Up to 272 conditions per place. [2020-01-16 23:39:28,377 INFO L123 encePairwiseOnDemand]: 66/80 looper letters, 270 selfloop transitions, 896 changer transitions [2020-01-16 23:39:28,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2020-01-16 23:39:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-01-16 23:39:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 10721 transitions. [2020-01-16 23:39:28,395 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.5469897959183674 [2020-01-16 23:39:28,395 INFO L72 ComplementDD]: Start complementDD. Operand 245 states and 10721 transitions. [2020-01-16 23:39:28,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 10721 transitions. [2020-01-16 23:39:28,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:39:28,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 245 states and 10721 transitions. [2020-01-16 23:39:28,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 246 states. [2020-01-16 23:39:28,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 246 states. [2020-01-16 23:39:28,444 INFO L81 ComplementDD]: Finished complementDD. Result 246 states. [2020-01-16 23:39:28,444 INFO L174 Difference]: Start difference. First operand has 57 places, 33 transitions. Second operand 245 states and 10721 transitions. [2020-01-16 23:39:28,450 INFO L199 Difference]: Finished difference. Result has 372 places, 940 transitions [2020-01-16 23:39:28,451 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=245, PETRI_FLOW=4966, PETRI_PLACES=372, PETRI_TRANSITIONS=940} [2020-01-16 23:39:28,451 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 372 places, 940 transitions [2020-01-16 23:39:28,451 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 372 places, 940 transitions [2020-01-16 23:39:29,259 INFO L129 PetriNetUnfolder]: 828/1557 cut-off events. [2020-01-16 23:39:29,259 INFO L130 PetriNetUnfolder]: For 12295/12358 co-relation queries the response was YES. [2020-01-16 23:39:29,294 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4246 conditions, 1557 events. 828/1557 cut-off events. For 12295/12358 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10422 event pairs. 21/1570 useless extension candidates. Maximal degree in co-relation 4129. Up to 175 conditions per place. [2020-01-16 23:39:29,299 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 372 places, 0 of 940 transitions, 0 of 4966 flow. [2020-01-16 23:39:29,300 INFO L478 AbstractCegarLoop]: Abstraction has has 372 places, 940 transitions [2020-01-16 23:39:29,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 189 states. [2020-01-16 23:39:30,012 INFO L129 PetriNetUnfolder]: 830/1544 cut-off events. [2020-01-16 23:39:30,012 INFO L130 PetriNetUnfolder]: For 11618/11694 co-relation queries the response was YES. [2020-01-16 23:39:30,012 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:39:30,012 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:39:30,012 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:39:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:39:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash 710696447, now seen corresponding path program 1 times [2020-01-16 23:39:30,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:39:30,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657199864] [2020-01-16 23:39:30,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:39:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:39:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:39:30,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657199864] [2020-01-16 23:39:30,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:39:30,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:39:30,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [124078195] [2020-01-16 23:39:30,032 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:39:30,034 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:39:30,335 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 23:39:30,336 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:39:30,346 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 23:39:30,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:39:30,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:39:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:39:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:39:30,347 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2020-01-16 23:39:30,347 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 940 transitions. Second operand 3 states. [2020-01-16 23:39:30,347 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:39:30,347 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2020-01-16 23:39:30,347 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:39:30,608 INFO L129 PetriNetUnfolder]: 549/1030 cut-off events. [2020-01-16 23:39:30,608 INFO L130 PetriNetUnfolder]: For 2568/2630 co-relation queries the response was YES. [2020-01-16 23:39:30,630 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1030 events. 549/1030 cut-off events. For 2568/2630 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6067 event pairs. 113/1141 useless extension candidates. Maximal degree in co-relation 2284. Up to 124 conditions per place. [2020-01-16 23:39:30,632 INFO L123 encePairwiseOnDemand]: 78/80 looper letters, 17 selfloop transitions, 109 changer transitions [2020-01-16 23:39:30,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:39:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:39:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2020-01-16 23:39:30,634 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9125 [2020-01-16 23:39:30,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2020-01-16 23:39:30,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2020-01-16 23:39:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:39:30,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2020-01-16 23:39:30,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:39:30,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:39:30,635 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:39:30,636 INFO L174 Difference]: Start difference. First operand has 372 places, 940 transitions. Second operand 3 states and 219 transitions. [2020-01-16 23:39:30,639 INFO L199 Difference]: Finished difference. Result has 374 places, 659 transitions [2020-01-16 23:39:30,640 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=831, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3368, PETRI_PLACES=374, PETRI_TRANSITIONS=659} [2020-01-16 23:39:30,641 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 374 places, 659 transitions [2020-01-16 23:39:30,641 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 374 places, 659 transitions [2020-01-16 23:39:30,987 INFO L129 PetriNetUnfolder]: 548/1046 cut-off events. [2020-01-16 23:39:30,988 INFO L130 PetriNetUnfolder]: For 11258/11324 co-relation queries the response was YES. [2020-01-16 23:39:31,014 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 1046 events. 548/1046 cut-off events. For 11258/11324 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6583 event pairs. 10/1052 useless extension candidates. Maximal degree in co-relation 2859. Up to 124 conditions per place. [2020-01-16 23:39:31,017 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 59 of 374 places, 0 of 659 transitions, 5 of 3368 flow. [2020-01-16 23:39:31,017 INFO L478 AbstractCegarLoop]: Abstraction has has 315 places, 659 transitions [2020-01-16 23:39:31,017 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:39:31,862 INFO L129 PetriNetUnfolder]: 548/1046 cut-off events. [2020-01-16 23:39:31,862 INFO L130 PetriNetUnfolder]: For 11258/11324 co-relation queries the response was YES. [2020-01-16 23:39:31,867 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 11:39:31 BasicIcfg [2020-01-16 23:39:31,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 23:39:31,869 INFO L168 Benchmark]: Toolchain (without parser) took 72326.27 ms. Allocated memory was 140.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 122.0 MB in the beginning and 1.0 GB in the end (delta: -886.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-01-16 23:39:31,870 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 23:39:31,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.61 ms. Allocated memory is still 140.0 MB. Free memory was 121.7 MB in the beginning and 120.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 23:39:31,871 INFO L168 Benchmark]: Boogie Preprocessor took 22.85 ms. Allocated memory is still 140.0 MB. Free memory was 120.1 MB in the beginning and 118.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 23:39:31,872 INFO L168 Benchmark]: RCFGBuilder took 338.08 ms. Allocated memory is still 140.0 MB. Free memory was 118.9 MB in the beginning and 106.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-01-16 23:39:31,873 INFO L168 Benchmark]: TraceAbstraction took 71926.25 ms. Allocated memory was 140.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 106.0 MB in the beginning and 1.0 GB in the end (delta: -902.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-01-16 23:39:31,876 INFO L335 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 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.61 ms. Allocated memory is still 140.0 MB. Free memory was 121.7 MB in the beginning and 120.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.85 ms. Allocated memory is still 140.0 MB. Free memory was 120.1 MB in the beginning and 118.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.08 ms. Allocated memory is still 140.0 MB. Free memory was 118.9 MB in the beginning and 106.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 71926.25 ms. Allocated memory was 140.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 106.0 MB in the beginning and 1.0 GB in the end (delta: -902.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 71.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 47.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 791 SDtfs, 1340 SDslu, 12132 SDs, 0 SdLazy, 11377 SolverSat, 123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 566 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41364 ImplicationChecksByTransitivity, 49.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=372occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 72 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 25984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...