/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_PETRI_NET -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:22:17,090 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:22:17,153 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:22:17,179 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:22:17,179 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:22:17,179 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:22:17,180 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:22:17,181 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:22:17,181 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:22:17,184 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:22:17,184 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:22:17,184 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:22:17,184 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:22:17,185 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:22:17,186 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:22:17,186 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:22:17,186 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:22:17,186 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:22:17,186 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:22:17,187 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:22:17,187 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:22:17,188 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:22:17,188 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:22:17,188 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:22:17,188 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:22:17,188 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:22:17,188 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:22:17,189 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:22:17,189 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:22:17,189 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:22:17,190 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:22:17,190 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:22:17,190 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:22:17,191 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:22:17,191 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:22:17,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:22:17,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:22:17,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:22:17,402 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:22:17,405 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:22:17,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl [2023-10-12 17:22:17,406 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl' [2023-10-12 17:22:17,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:22:17,428 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:22:17,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:17,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:22:17,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:22:17,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,449 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:22:17,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:17,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:22:17,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:22:17,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:22:17,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:22:17,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:22:17,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:22:17,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:22:17,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/1) ... [2023-10-12 17:22:17,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:17,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:17,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:22:17,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:22:17,524 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:22:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:22:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:22:17,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:22:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:22:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:22:17,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:22:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:22:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:22:17,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:22:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:22:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:22:17,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:22:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:22:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:22:17,528 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:22:17,563 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:22:17,565 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:22:17,692 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:22:17,698 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:22:17,698 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-10-12 17:22:17,699 INFO L201 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:17 BoogieIcfgContainer [2023-10-12 17:22:17,699 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:22:17,700 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:22:17,700 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:22:17,711 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:22:17,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:17,712 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:17" (1/2) ... [2023-10-12 17:22:17,714 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79c3b25a and model type spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:22:17, skipping insertion in model container [2023-10-12 17:22:17,714 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:17,714 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:17" (2/2) ... [2023-10-12 17:22:17,716 INFO L332 chiAutomizerObserver]: Analyzing ICFG spaghetti.wvr.bpl [2023-10-12 17:22:17,765 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:22:17,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 38 transitions, 108 flow [2023-10-12 17:22:17,831 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-10-12 17:22:17,831 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:22:17,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 62 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-10-12 17:22:17,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 38 transitions, 108 flow [2023-10-12 17:22:17,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 30 transitions, 84 flow [2023-10-12 17:22:17,844 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:22:17,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 30 transitions, 84 flow [2023-10-12 17:22:17,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 30 transitions, 84 flow [2023-10-12 17:22:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 30 transitions, 84 flow [2023-10-12 17:22:17,862 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-10-12 17:22:17,862 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:22:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 62 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-10-12 17:22:17,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 350 [2023-10-12 17:22:18,195 INFO L134 LiptonReduction]: Checked pairs total: 452 [2023-10-12 17:22:18,195 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-10-12 17:22:18,207 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:22:18,207 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:22:18,207 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:22:18,207 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:22:18,207 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:22:18,207 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:22:18,207 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:22:18,207 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:22:18,208 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:22:18,210 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:18,210 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-10-12 17:22:18,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:18,211 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:18,213 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:22:18,213 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:22:18,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:18,213 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-10-12 17:22:18,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:18,214 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:18,217 INFO L748 eck$LassoCheckResult]: Stem: 47#[$Ultimate##0]true [101] $Ultimate##0-->L15: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0] 49#[L15, L57]true [2023-10-12 17:22:18,217 INFO L750 eck$LassoCheckResult]: Loop: 49#[L15, L57]true [114] L15-->L15: Formula: (= (+ 6 (* 2 v_x_0_100)) v_x_0_99) InVars {} OutVars{x_0=v_x_0_99} AuxVars[v_x_0_100] AssignedVars[x_0] 49#[L15, L57]true [2023-10-12 17:22:18,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 132, now seen corresponding path program 1 times [2023-10-12 17:22:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021559561] [2023-10-12 17:22:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:18,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash 145, now seen corresponding path program 1 times [2023-10-12 17:22:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986377632] [2023-10-12 17:22:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:18,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash 4206, now seen corresponding path program 1 times [2023-10-12 17:22:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697305351] [2023-10-12 17:22:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:18,406 INFO L201 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:22:18 BoogieIcfgContainer [2023-10-12 17:22:18,407 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:22:18,408 INFO L158 Benchmark]: Toolchain (without parser) took 979.68ms. Allocated memory was 217.1MB in the beginning and 294.6MB in the end (delta: 77.6MB). Free memory was 173.7MB in the beginning and 264.6MB in the end (delta: -90.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:18,408 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.23ms. Allocated memory is still 217.1MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:18,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.22ms. Allocated memory is still 217.1MB. Free memory was 173.7MB in the beginning and 172.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:18,409 INFO L158 Benchmark]: Boogie Preprocessor took 14.72ms. Allocated memory is still 217.1MB. Free memory was 172.1MB in the beginning and 171.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:22:18,409 INFO L158 Benchmark]: RCFGBuilder took 232.54ms. Allocated memory is still 217.1MB. Free memory was 171.1MB in the beginning and 161.6MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:22:18,410 INFO L158 Benchmark]: BuchiAutomizer took 706.88ms. Allocated memory was 217.1MB in the beginning and 294.6MB in the end (delta: 77.6MB). Free memory was 161.4MB in the beginning and 264.6MB in the end (delta: -103.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:18,411 INFO L338 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 0.23ms. Allocated memory is still 217.1MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.22ms. Allocated memory is still 217.1MB. Free memory was 173.7MB in the beginning and 172.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.72ms. Allocated memory is still 217.1MB. Free memory was 172.1MB in the beginning and 171.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 232.54ms. Allocated memory is still 217.1MB. Free memory was 171.1MB in the beginning and 161.6MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 706.88ms. Allocated memory was 217.1MB in the beginning and 294.6MB in the end (delta: 77.6MB). Free memory was 161.4MB in the beginning and 264.6MB in the end (delta: -103.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 1 iterations. TraceHistogramMax:0. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L57] FORK 0 fork 1 thread1(); Loop: [L16] havoc x_0; [L17] x_0 := x_0 + 3; [L18] x_0 := 2 * x_0; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] FORK 0 fork 1 thread1(); Loop: [L16] havoc x_0; [L17] x_0 := x_0 + 3; [L18] x_0 := 2 * x_0; End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 39 PlacesBefore, 28 PlacesAfterwards, 30 TransitionsBefore, 19 TransitionsAfterwards, 350 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 353, independent: 337, independent conditional: 0, independent unconditional: 337, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 230, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 230, independent: 188, independent conditional: 0, independent unconditional: 188, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 150, unknown conditional: 0, unknown unconditional: 150] ], Cache Queries: [ total: 353, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 230, unknown conditional: 0, unknown unconditional: 230] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1 RESULT: Ultimate proved your program to be incorrect! [2023-10-12 17:22:18,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...