/usr/bin/java -Xmx16000000000 -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/VMCAI2021_PN.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 14:38:51,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 14:38:51,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 14:38:51,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 14:38:51,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 14:38:51,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 14:38:51,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 14:38:51,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 14:38:51,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 14:38:51,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 14:38:51,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 14:38:51,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 14:38:51,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 14:38:51,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 14:38:51,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 14:38:51,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 14:38:51,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 14:38:51,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 14:38:51,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 14:38:51,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 14:38:51,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 14:38:51,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 14:38:51,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 14:38:51,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 14:38:51,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-29 14:38:51,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-09-29 14:38:51,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 14:38:51,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 14:38:51,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 14:38:51,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 14:38:51,367 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 14:38:51,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 14:38:51,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 14:38:51,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 14:38:51,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 14:38:51,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 14:38:51,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 14:38:51,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 14:38:51,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 14:38:51,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 14:38:51,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 14:38:51,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 14:38:51,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 14:38:51,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 14:38:51,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 14:38:51,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 14:38:51,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 14:38:51,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 14:38:51,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 14:38:51,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 14:38:51,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 14:38:51,372 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-09-29 14:38:51,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 14:38:51,372 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-09-29 14:38:51,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-09-29 14:38:51,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 14:38:52,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 14:38:52,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 14:38:52,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 14:38:52,027 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 14:38:52,028 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 14:38:52,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=05.bpl [2020-09-29 14:38:52,030 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=05.bpl' [2020-09-29 14:38:52,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 14:38:52,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 14:38:52,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 14:38:52,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 14:38:52,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 14:38:52,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 14:38:52,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 14:38:52,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 14:38:52,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 14:38:52,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/1) ... [2020-09-29 14:38:52,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 14:38:52,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 14:38:52,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 14:38:52,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 14:38:52,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (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 [2020-09-29 14:38:52,270 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 14:38:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 14:38:52,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 14:38:52,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 14:38:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 14:38:52,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 14:38:52,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 14:38:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 14:38:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 14:38:52,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 14:38:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 14:38:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 14:38:52,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 14:38:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 14:38:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 14:38:52,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 14:38:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 14:38:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 14:38:52,277 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-29 14:38:52,503 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 14:38:52,503 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-29 14:38:52,508 INFO L202 PluginConnector]: Adding new model example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 02:38:52 BoogieIcfgContainer [2020-09-29 14:38:52,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 14:38:52,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 14:38:52,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 14:38:52,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 14:38:52,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:38:52" (1/2) ... [2020-09-29 14:38:52,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb71480 and model type example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 02:38:52, skipping insertion in model container [2020-09-29 14:38:52,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 02:38:52" (2/2) ... [2020-09-29 14:38:52,518 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=05.bpl [2020-09-29 14:38:52,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 14:38:52,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 14:38:52,541 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 14:38:52,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-29 14:38:52,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 14:38:52,667 INFO L376 AbstractCegarLoop]: Hoare is false [2020-09-29 14:38:52,667 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 14:38:52,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 14:38:52,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 14:38:52,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 14:38:52,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 14:38:52,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 14:38:52,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 29 transitions, 98 flow [2020-09-29 14:38:52,722 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-09-29 14:38:52,722 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-09-29 14:38:52,729 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 5/24 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2020-09-29 14:38:52,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 29 transitions, 98 flow [2020-09-29 14:38:52,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 22 transitions, 74 flow [2020-09-29 14:38:52,749 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2020-09-29 14:38:52,749 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-09-29 14:38:52,749 INFO L245 CegarLoopForPetriNet]: Found error trace [2020-09-29 14:38:52,751 INFO L253 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-29 14:38:52,751 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-09-29 14:38:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-29 14:38:52,759 INFO L82 PathProgramCache]: Analyzing trace with hash 824257992, now seen corresponding path program 1 times [2020-09-29 14:38:52,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-09-29 14:38:52,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956908344] [2020-09-29 14:38:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-09-29 14:38:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-29 14:38:52,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-29 14:38:52,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-29 14:38:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-29 14:38:52,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-09-29 14:38:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-29 14:38:52,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956908344] [2020-09-29 14:38:52,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-09-29 14:38:52,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-09-29 14:38:52,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300526699] [2020-09-29 14:38:52,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-29 14:38:53,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-09-29 14:38:53,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-29 14:38:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 14:38:53,019 INFO L503 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 29 [2020-09-29 14:38:53,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 74 flow. Second operand 3 states. [2020-09-29 14:38:53,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-09-29 14:38:53,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 29 [2020-09-29 14:38:53,022 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-09-29 14:38:53,059 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2020-09-29 14:38:53,060 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-09-29 14:38:53,061 INFO L80 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 21 events. 5/21 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2020-09-29 14:38:53,062 INFO L132 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-09-29 14:38:53,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 21 transitions, 84 flow [2020-09-29 14:38:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-29 14:38:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-09-29 14:38:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2020-09-29 14:38:53,079 INFO L550 CegarLoopForPetriNet]: DFA transition density 0.8045977011494253 [2020-09-29 14:38:53,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 70 transitions. [2020-09-29 14:38:53,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 70 transitions. [2020-09-29 14:38:53,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-09-29 14:38:53,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 70 transitions. [2020-09-29 14:38:53,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-09-29 14:38:53,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-09-29 14:38:53,094 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-09-29 14:38:53,097 INFO L185 Difference]: Start difference. First operand has 33 places, 22 transitions, 74 flow. Second operand 3 states and 70 transitions. [2020-09-29 14:38:53,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 21 transitions, 84 flow [2020-09-29 14:38:53,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 64 flow, removed 0 selfloop flow, removed 10 redundant places. [2020-09-29 14:38:53,105 INFO L241 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2020-09-29 14:38:53,108 INFO L321 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2020-09-29 14:38:53,109 INFO L337 CegarLoopForPetriNet]: 33 programPoint places, -9 predicate places. [2020-09-29 14:38:53,110 INFO L479 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2020-09-29 14:38:53,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-29 14:38:53,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-09-29 14:38:53,331 INFO L202 PluginConnector]: Adding new model example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.09 02:38:53 BasicIcfg [2020-09-29 14:38:53,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-29 14:38:53,334 INFO L168 Benchmark]: Toolchain (without parser) took 1252.41 ms. Allocated memory is still 250.6 MB. Free memory was 227.0 MB in the beginning and 176.0 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 14.2 GB. [2020-09-29 14:38:53,335 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.22 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-09-29 14:38:53,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.60 ms. Allocated memory is still 250.6 MB. Free memory is still 224.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-09-29 14:38:53,337 INFO L168 Benchmark]: Boogie Preprocessor took 35.97 ms. Allocated memory is still 250.6 MB. Free memory was 224.5 MB in the beginning and 222.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-09-29 14:38:53,338 INFO L168 Benchmark]: RCFGBuilder took 337.13 ms. Allocated memory is still 250.6 MB. Free memory was 222.0 MB in the beginning and 209.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.2 GB. [2020-09-29 14:38:53,338 INFO L168 Benchmark]: TraceAbstraction took 821.56 ms. Allocated memory is still 250.6 MB. Free memory was 209.4 MB in the beginning and 176.0 MB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-09-29 14:38:53,342 INFO L336 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 1.22 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.60 ms. Allocated memory is still 250.6 MB. Free memory is still 224.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 35.97 ms. Allocated memory is still 250.6 MB. Free memory was 224.5 MB in the beginning and 222.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 337.13 ms. Allocated memory is still 250.6 MB. Free memory was 222.0 MB in the beginning and 209.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.2 GB. * TraceAbstraction took 821.56 ms. Allocated memory is still 250.6 MB. Free memory was 209.4 MB in the beginning and 176.0 MB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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 6 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...