/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-50b6972 [2020-10-06 18:21:36,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 18:21:36,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 18:21:36,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 18:21:36,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 18:21:36,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 18:21:36,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 18:21:36,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 18:21:36,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 18:21:36,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 18:21:36,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 18:21:36,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 18:21:36,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 18:21:36,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 18:21:36,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 18:21:36,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 18:21:36,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 18:21:36,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 18:21:36,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 18:21:36,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 18:21:36,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 18:21:36,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 18:21:36,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 18:21:36,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 18:21:36,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 18:21:36,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 18:21:36,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 18:21:36,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 18:21:36,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 18:21:36,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 18:21:36,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 18:21:36,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 18:21:36,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 18:21:36,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 18:21:36,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 18:21:36,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 18:21:36,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-06 18:21:36,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 18:21:36,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 18:21:36,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 18:21:36,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 18:21:36,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 18:21:36,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 18:21:36,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 18:21:36,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 18:21:36,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 18:21:36,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 18:21:36,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 18:21:36,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 18:21:36,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 18:21:36,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 18:21:36,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 18:21:36,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 18:21:36,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 18:21:36,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 18:21:36,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 18:21:36,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 18:21:36,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 18:21:36,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 18:21:36,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 18:21:36,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-06 18:21:36,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 18:21:36,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 18:21:36,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 18:21:36,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 18:21:36,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-06 18:21:36,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-06 18:21:36,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 18:21:36,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 18:21:36,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 18:21:36,921 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-10-06 18:21:36,922 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-10-06 18:21:36,923 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=05.bpl [2020-10-06 18:21:36,923 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=05.bpl' [2020-10-06 18:21:36,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 18:21:36,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-06 18:21:36,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 18:21:36,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 18:21:36,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 18:21:36,980 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 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:36,990 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 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:36,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 18:21:37,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 18:21:37,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 18:21:37,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 18:21:37,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/1) ... [2020-10-06 18:21:37,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 18:21:37,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 18:21:37,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 18:21:37,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 18:21:37,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (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 [2020-10-06 18:21:37,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-10-06 18:21:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-06 18:21:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-06 18:21:37,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-10-06 18:21:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-06 18:21:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-06 18:21:37,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-10-06 18:21:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-06 18:21:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-06 18:21:37,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-10-06 18:21:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 18:21:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 18:21:37,108 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-10-06 18:21:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-10-06 18:21:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-10-06 18:21:37,108 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-10-06 18:21:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-10-06 18:21:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-10-06 18:21:37,110 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 18:21:37,336 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 18:21:37,336 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-06 18:21:37,338 INFO L202 PluginConnector]: Adding new model example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 06:21:37 BoogieIcfgContainer [2020-10-06 18:21:37,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 18:21:37,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 18:21:37,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 18:21:37,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 18:21:37,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:36" (1/2) ... [2020-10-06 18:21:37,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26615438 and model type example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 06:21:37, skipping insertion in model container [2020-10-06 18:21:37,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 06:21:37" (2/2) ... [2020-10-06 18:21:37,347 INFO L111 eAbstractionObserver]: Analyzing ICFG example2_N=05.bpl [2020-10-06 18:21:37,362 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 18:21:37,363 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-06 18:21:37,371 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 18:21:37,372 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 18:21:37,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-06 18:21:37,491 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-06 18:21:37,491 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-06 18:21:37,491 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-06 18:21:37,492 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-06 18:21:37,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 18:21:37,492 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-06 18:21:37,492 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 18:21:37,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 18:21:37,506 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-06 18:21:37,509 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 34 transitions, 108 flow [2020-10-06 18:21:37,512 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 34 transitions, 108 flow [2020-10-06 18:21:37,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 34 transitions, 108 flow [2020-10-06 18:21:37,552 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2020-10-06 18:21:37,553 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-06 18:21:37,562 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 29 events. 5/29 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-06 18:21:37,565 INFO L117 LiptonReduction]: Number of co-enabled transitions 300 [2020-10-06 18:21:37,855 INFO L132 LiptonReduction]: Checked pairs total: 436 [2020-10-06 18:21:37,856 INFO L134 LiptonReduction]: Total number of compositions: 2 [2020-10-06 18:21:37,862 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 32 transitions, 104 flow [2020-10-06 18:21:37,907 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 367 states. [2020-10-06 18:21:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states. [2020-10-06 18:21:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 18:21:37,940 INFO L413 BasicCegarLoop]: Found error trace [2020-10-06 18:21:37,941 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 18:21:37,941 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-10-06 18:21:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 18:21:37,947 INFO L82 PathProgramCache]: Analyzing trace with hash 128259073, now seen corresponding path program 1 times [2020-10-06 18:21:37,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 18:21:37,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516392383] [2020-10-06 18:21:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 18:21:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 18:21:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 18:21:38,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516392383] [2020-10-06 18:21:38,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 18:21:38,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 18:21:38,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034132371] [2020-10-06 18:21:38,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 18:21:38,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 18:21:38,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 18:21:38,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 18:21:38,122 INFO L87 Difference]: Start difference. First operand 367 states. Second operand 3 states. [2020-10-06 18:21:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 18:21:38,215 INFO L93 Difference]: Finished difference Result 366 states and 1724 transitions. [2020-10-06 18:21:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 18:21:38,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-06 18:21:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 18:21:38,226 INFO L225 Difference]: With dead ends: 366 [2020-10-06 18:21:38,227 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 18:21:38,228 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 18:21:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 18:21:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 18:21:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 18:21:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 18:21:38,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 18:21:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 18:21:38,257 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 18:21:38,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 18:21:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 18:21:38,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 18:21:38,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 18:21:38,261 INFO L202 PluginConnector]: Adding new model example2_N=05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 06:21:38 BasicIcfg [2020-10-06 18:21:38,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 18:21:38,264 INFO L168 Benchmark]: Toolchain (without parser) took 1301.93 ms. Allocated memory is still 248.0 MB. Free memory was 221.9 MB in the beginning and 151.3 MB in the end (delta: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 14.2 GB. [2020-10-06 18:21:38,265 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.48 ms. Allocated memory is still 248.0 MB. Free memory is still 221.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-06 18:21:38,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 248.0 MB. Free memory was 221.9 MB in the beginning and 219.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-06 18:21:38,271 INFO L168 Benchmark]: Boogie Preprocessor took 24.06 ms. Allocated memory is still 248.0 MB. Free memory was 219.3 MB in the beginning and 216.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-06 18:21:38,272 INFO L168 Benchmark]: RCFGBuilder took 314.02 ms. Allocated memory is still 248.0 MB. Free memory was 216.8 MB in the beginning and 204.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.2 GB. [2020-10-06 18:21:38,273 INFO L168 Benchmark]: TraceAbstraction took 922.55 ms. Allocated memory is still 248.0 MB. Free memory was 204.2 MB in the beginning and 151.3 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 14.2 GB. [2020-10-06 18:21:38,284 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 0.48 ms. Allocated memory is still 248.0 MB. Free memory is still 221.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 248.0 MB. Free memory was 221.9 MB in the beginning and 219.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.06 ms. Allocated memory is still 248.0 MB. Free memory was 219.3 MB in the beginning and 216.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 314.02 ms. Allocated memory is still 248.0 MB. Free memory was 216.8 MB in the beginning and 204.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.2 GB. * TraceAbstraction took 922.55 ms. Allocated memory is still 248.0 MB. Free memory was 204.2 MB in the beginning and 151.3 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 120 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 126 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.3s, 45 PlacesBefore, 43 PlacesAfterwards, 34 TransitionsBefore, 32 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 436 MoverChecksTotal - 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, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 16 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...