/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=03.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-08 13:14:27,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-08 13:14:27,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-08 13:14:27,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-08 13:14:27,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-08 13:14:27,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-08 13:14:27,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-08 13:14:27,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-08 13:14:27,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-08 13:14:27,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-08 13:14:27,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-08 13:14:27,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-08 13:14:27,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-08 13:14:27,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-08 13:14:27,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-08 13:14:27,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-08 13:14:27,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-08 13:14:27,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-08 13:14:27,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-08 13:14:27,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-08 13:14:27,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-08 13:14:27,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-08 13:14:27,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-08 13:14:27,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-08 13:14:27,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-08 13:14:27,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-08 13:14:27,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-08 13:14:27,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-08 13:14:27,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-08 13:14:27,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-08 13:14:27,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-08 13:14:27,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-08 13:14:27,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-08 13:14:27,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-08 13:14:27,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-08 13:14:27,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-08 13:14:27,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-08 13:14:27,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-08 13:14:27,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-08 13:14:27,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-08 13:14:27,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-08 13:14:27,971 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 [2020-10-08 13:14:28,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-08 13:14:28,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-08 13:14:28,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-08 13:14:28,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-08 13:14:28,014 INFO L138 SettingsManager]: * Use SBE=true [2020-10-08 13:14:28,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-08 13:14:28,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-08 13:14:28,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-08 13:14:28,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-08 13:14:28,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-08 13:14:28,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-08 13:14:28,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-08 13:14:28,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-08 13:14:28,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-08 13:14:28,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-08 13:14:28,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-08 13:14:28,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-08 13:14:28,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-08 13:14:28,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-08 13:14:28,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-08 13:14:28,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-08 13:14:28,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-08 13:14:28,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-08 13:14:28,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-08 13:14:28,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-08 13:14:28,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-08 13:14:28,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-08 13:14:28,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-08 13:14:28,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-08 13:14:28,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-08 13:14:28,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-08 13:14:28,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-08 13:14:28,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-08 13:14:28,342 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-10-08 13:14:28,342 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-10-08 13:14:28,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=03.bpl [2020-10-08 13:14:28,344 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=03.bpl' [2020-10-08 13:14:28,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-08 13:14:28,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-08 13:14:28,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-08 13:14:28,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-08 13:14:28,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-08 13:14:28,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-08 13:14:28,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-08 13:14:28,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-08 13:14:28,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-08 13:14:28,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/1) ... [2020-10-08 13:14:28,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-08 13:14:28,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-08 13:14:28,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-08 13:14:28,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-08 13:14:28,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (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 [2020-10-08 13:14:28,510 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-10-08 13:14:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-08 13:14:28,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-08 13:14:28,510 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-10-08 13:14:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-08 13:14:28,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-08 13:14:28,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-10-08 13:14:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-08 13:14:28,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-08 13:14:28,512 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-10-08 13:14:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-08 13:14:28,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-08 13:14:28,513 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-08 13:14:28,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-08 13:14:28,679 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-08 13:14:28,681 INFO L202 PluginConnector]: Adding new model example2_N=03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 01:14:28 BoogieIcfgContainer [2020-10-08 13:14:28,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-08 13:14:28,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-08 13:14:28,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-08 13:14:28,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-08 13:14:28,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:28" (1/2) ... [2020-10-08 13:14:28,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679da1be and model type example2_N=03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 01:14:28, skipping insertion in model container [2020-10-08 13:14:28,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 01:14:28" (2/2) ... [2020-10-08 13:14:28,690 INFO L111 eAbstractionObserver]: Analyzing ICFG example2_N=03.bpl [2020-10-08 13:14:28,701 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-08 13:14:28,702 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-08 13:14:28,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-08 13:14:28,710 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-08 13:14:28,784 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-08 13:14:28,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-08 13:14:28,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-08 13:14:28,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-08 13:14:28,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-08 13:14:28,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-08 13:14:28,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-08 13:14:28,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-08 13:14:28,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-08 13:14:28,838 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-08 13:14:28,841 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 22 transitions, 68 flow [2020-10-08 13:14:28,844 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 22 transitions, 68 flow [2020-10-08 13:14:28,845 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 68 flow [2020-10-08 13:14:28,873 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-10-08 13:14:28,873 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-08 13:14:28,878 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 19 events. 3/19 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 19 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2020-10-08 13:14:28,880 INFO L117 LiptonReduction]: Number of co-enabled transitions 90 [2020-10-08 13:14:29,085 INFO L132 LiptonReduction]: Checked pairs total: 122 [2020-10-08 13:14:29,085 INFO L134 LiptonReduction]: Total number of compositions: 2 [2020-10-08 13:14:29,092 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 64 flow [2020-10-08 13:14:29,103 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 43 states. [2020-10-08 13:14:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-08 13:14:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-08 13:14:29,112 INFO L413 BasicCegarLoop]: Found error trace [2020-10-08 13:14:29,114 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-08 13:14:29,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-08 13:14:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-08 13:14:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash -844579652, now seen corresponding path program 1 times [2020-10-08 13:14:29,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-08 13:14:29,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061522023] [2020-10-08 13:14:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-08 13:14:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-08 13:14:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-08 13:14:29,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061522023] [2020-10-08 13:14:29,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-08 13:14:29,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-08 13:14:29,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605901086] [2020-10-08 13:14:29,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-08 13:14:29,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-08 13:14:29,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-08 13:14:29,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-08 13:14:29,297 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-10-08 13:14:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-08 13:14:29,339 INFO L93 Difference]: Finished difference Result 42 states and 113 transitions. [2020-10-08 13:14:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-08 13:14:29,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-08 13:14:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-08 13:14:29,346 INFO L225 Difference]: With dead ends: 42 [2020-10-08 13:14:29,347 INFO L226 Difference]: Without dead ends: 0 [2020-10-08 13:14:29,348 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 [2020-10-08 13:14:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-08 13:14:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-08 13:14:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-08 13:14:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-08 13:14:29,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-08 13:14:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-08 13:14:29,373 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-08 13:14:29,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-08 13:14:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-08 13:14:29,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-08 13:14:29,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-08 13:14:29,378 INFO L202 PluginConnector]: Adding new model example2_N=03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 01:14:29 BasicIcfg [2020-10-08 13:14:29,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-08 13:14:29,381 INFO L168 Benchmark]: Toolchain (without parser) took 998.02 ms. Allocated memory is still 253.2 MB. Free memory was 227.1 MB in the beginning and 174.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 14.2 GB. [2020-10-08 13:14:29,381 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.32 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-08 13:14:29,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 253.2 MB. Free memory was 227.1 MB in the beginning and 224.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-08 13:14:29,383 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 253.2 MB. Free memory is still 224.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-08 13:14:29,384 INFO L168 Benchmark]: RCFGBuilder took 243.68 ms. Allocated memory is still 253.2 MB. Free memory was 222.1 MB in the beginning and 212.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.2 GB. [2020-10-08 13:14:29,385 INFO L168 Benchmark]: TraceAbstraction took 695.83 ms. Allocated memory is still 253.2 MB. Free memory was 209.5 MB in the beginning and 174.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 14.2 GB. [2020-10-08 13:14:29,388 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 0.32 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 253.2 MB. Free memory was 227.1 MB in the beginning and 224.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 253.2 MB. Free memory is still 224.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 243.68 ms. Allocated memory is still 253.2 MB. Free memory was 222.1 MB in the beginning and 212.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 695.83 ms. Allocated memory is still 253.2 MB. Free memory was 209.5 MB in the beginning and 174.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 31 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 5 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 34 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.2s, 29 PlacesBefore, 27 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 90 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 122 MoverChecksTotal - PositiveResult [Line: 16]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 5 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=43occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 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...