/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:23:59,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:00,027 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:00,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:00,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:00,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:00,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:00,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:00,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:00,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:00,054 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:00,055 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:00,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:00,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:00,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:00,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:00,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:00,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:00,057 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:00,057 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:00,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:00,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:00,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:00,285 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:00,286 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:00,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl [2025-04-26 16:24:00,289 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl' [2025-04-26 16:24:00,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:00,306 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:00,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:00,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:00,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:00,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,341 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:00,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:00,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:00,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:00,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:00,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:00,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:00,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:00,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:00,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/1) ... [2025-04-26 16:24:00,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:00,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:00,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:00,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:24:00,426 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:00,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:00,427 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:00,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:00,427 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:00,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:00,428 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:00,465 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:00,466 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:00,550 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:00,550 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:00,560 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:00,560 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:00,561 INFO L201 PluginConnector]: Adding new model easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:00 BoogieIcfgContainer [2025-04-26 16:24:00,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:00,562 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:00,562 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:00,566 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:00,567 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:00,567 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:00" (1/2) ... [2025-04-26 16:24:00,569 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@548776a2 and model type easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:00, skipping insertion in model container [2025-04-26 16:24:00,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:00,569 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:00" (2/2) ... [2025-04-26 16:24:00,570 INFO L376 chiAutomizerObserver]: Analyzing ICFG easy11.wvr.bpl [2025-04-26 16:24:00,615 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:24:00,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 25 transitions, 64 flow [2025-04-26 16:24:00,676 INFO L116 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-04-26 16:24:00,679 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:24:00,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-04-26 16:24:00,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 25 transitions, 64 flow [2025-04-26 16:24:00,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2025-04-26 16:24:00,685 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 26 places, 21 transitions, 54 flow [2025-04-26 16:24:00,694 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:00,694 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:00,694 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:00,694 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:00,694 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:00,694 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:00,694 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:00,695 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:00,696 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:00,733 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 24 [2025-04-26 16:24:00,734 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:00,734 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:00,737 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:00,737 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:00,737 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:00,738 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 54 states, but on-demand construction may add more states [2025-04-26 16:24:00,741 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 24 [2025-04-26 16:24:00,741 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:00,741 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:00,741 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:00,741 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:00,745 INFO L752 eck$LassoCheckResult]: Stem: "[41] $Ultimate##0-->L38: Formula: (and (= v_Y_5 0) (<= v_X_3 10000)) InVars {Y=v_Y_5, X=v_X_3} OutVars{Y=v_Y_5, X=v_X_3} AuxVars[] AssignedVars[]" "[64] L38-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_14} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_x]" "[50] $Ultimate##0-->L17-1: Formula: (= v_X_1 v_thread1Thread1of1ForFork0_x_1) InVars {X=v_X_1, thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_1} OutVars{X=v_X_1, thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_1} AuxVars[] AssignedVars[]" [2025-04-26 16:24:00,746 INFO L754 eck$LassoCheckResult]: Loop: "[52] L17-1-->L18: Formula: (< v_thread1Thread1of1ForFork0_x_5 10000) InVars {thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_5} OutVars{thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_5} AuxVars[] AssignedVars[]" "[54] L18-->L17-1: Formula: (= v_thread1Thread1of1ForFork0_x_10 (+ v_thread1Thread1of1ForFork0_x_9 1)) InVars {thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_9} OutVars{thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_10} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_x]" [2025-04-26 16:24:00,749 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:00,750 INFO L85 PathProgramCache]: Analyzing trace with hash 71226, now seen corresponding path program 1 times [2025-04-26 16:24:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:00,755 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773485024] [2025-04-26 16:24:00,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:00,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:00,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:00,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:00,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:00,804 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:00,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:00,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:00,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:00,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:00,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:00,821 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2627, now seen corresponding path program 1 times [2025-04-26 16:24:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:00,821 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711410370] [2025-04-26 16:24:00,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:00,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:00,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:00,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:00,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:00,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:00,826 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:00,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:00,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:00,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:00,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:00,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:00,830 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 68449852, now seen corresponding path program 1 times [2025-04-26 16:24:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:00,830 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10165325] [2025-04-26 16:24:00,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:00,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:00,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:00,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:00,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:00,835 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:00,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:00,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:00,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:00,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:00,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:00,874 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:00,875 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:00,875 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:00,875 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:00,875 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:00,875 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:00,875 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:00,876 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:00,876 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy11.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:00,876 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:00,876 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:00,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:00,932 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:00,932 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:00,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:00,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:00,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:24:00,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:00,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:00,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:00,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:00,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:00,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:00,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:24:00,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:00,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:01,006 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:01,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:01,011 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:01,011 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:01,011 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:01,011 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:01,011 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:01,011 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,011 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:01,011 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:01,011 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy11.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:01,011 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:01,011 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:01,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:01,042 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:01,044 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:01,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:01,047 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:01,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:24:01,050 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:01,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:01,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:01,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:01,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:01,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:01,069 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:01,069 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:01,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:01,076 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:01,076 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:01,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:01,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:01,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:24:01,083 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:01,086 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:01,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:01,088 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:01,088 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:01,088 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread1Thread1of1ForFork0_x) = -2*thread1Thread1of1ForFork0_x + 19999 Supporting invariants [] [2025-04-26 16:24:01,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:01,097 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:01,115 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:01,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:01,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:01,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:01,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:01,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:01,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:01,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:01,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:01,143 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:01,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:01,219 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:01,239 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 54 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:01,345 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 54 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 128 states and 292 transitions. Complement of second has 7 states. [2025-04-26 16:24:01,346 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2025-04-26 16:24:01,354 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 44 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:24:01,355 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:01,355 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 44 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:24:01,355 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:01,355 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 44 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:24:01,355 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:01,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 292 transitions. [2025-04-26 16:24:01,359 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 14 [2025-04-26 16:24:01,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 51 states and 118 transitions. [2025-04-26 16:24:01,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2025-04-26 16:24:01,364 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2025-04-26 16:24:01,364 INFO L74 IsDeterministic]: Start isDeterministic. Operand 51 states and 118 transitions. [2025-04-26 16:24:01,364 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:01,364 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 118 transitions. [2025-04-26 16:24:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 118 transitions. [2025-04-26 16:24:01,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2025-04-26 16:24:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 2.395348837209302) internal successors, (in total 103), 42 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 103 transitions. [2025-04-26 16:24:01,386 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 103 transitions. [2025-04-26 16:24:01,386 INFO L438 stractBuchiCegarLoop]: Abstraction has 43 states and 103 transitions. [2025-04-26 16:24:01,386 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:01,386 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 103 transitions. [2025-04-26 16:24:01,387 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 14 [2025-04-26 16:24:01,387 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:01,387 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:01,388 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:01,388 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:01,388 INFO L752 eck$LassoCheckResult]: Stem: "[41] $Ultimate##0-->L38: Formula: (and (= v_Y_5 0) (<= v_X_3 10000)) InVars {Y=v_Y_5, X=v_X_3} OutVars{Y=v_Y_5, X=v_X_3} AuxVars[] AssignedVars[]" "[64] L38-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_x=v_thread1Thread1of1ForFork0_x_14} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_x]" "[67] L38-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_14, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_x, thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[56] $Ultimate##0-->L28-1: Formula: (= v_X_2 v_thread2Thread1of1ForFork1_x_1) InVars {thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_1, X=v_X_2} OutVars{thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_1, X=v_X_2} AuxVars[] AssignedVars[]" [2025-04-26 16:24:01,388 INFO L754 eck$LassoCheckResult]: Loop: "[58] L28-1-->L29: Formula: (< v_thread2Thread1of1ForFork1_x_5 10000) InVars {thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_5} OutVars{thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_5} AuxVars[] AssignedVars[]" "[60] L29-->L28-1: Formula: (= v_thread2Thread1of1ForFork1_x_10 (+ v_thread2Thread1of1ForFork1_x_9 1)) InVars {thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_9} OutVars{thread2Thread1of1ForFork1_x=v_thread2Thread1of1ForFork1_x_10} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_x]" [2025-04-26 16:24:01,388 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2208589, now seen corresponding path program 1 times [2025-04-26 16:24:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:01,389 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33376617] [2025-04-26 16:24:01,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:01,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:01,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:01,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:01,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:01,392 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:01,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:01,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:01,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:01,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:01,395 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2819, now seen corresponding path program 1 times [2025-04-26 16:24:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:01,396 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030812124] [2025-04-26 16:24:01,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:01,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:01,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:01,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:01,398 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:01,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:01,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:01,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:01,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:01,402 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2122455887, now seen corresponding path program 1 times [2025-04-26 16:24:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:01,402 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110881056] [2025-04-26 16:24:01,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:01,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:01,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:01,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:01,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:01,406 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:01,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:01,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:01,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:01,409 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:01,429 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:01,429 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:01,429 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:01,429 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:01,429 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:01,430 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,430 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:01,430 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:01,430 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy11.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:01,430 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:01,430 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:01,430 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:01,450 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:01,450 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:01,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:01,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:01,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:24:01,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:01,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:01,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:24:01,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:01,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:01,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:24:01,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:01,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:01,498 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:01,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:24:01,502 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:01,503 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:01,503 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:01,503 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:01,503 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:01,503 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,503 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:01,503 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:01,503 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy11.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:01,503 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:01,503 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:01,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:01,529 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:01,529 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:01,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:01,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:24:01,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:01,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:01,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:01,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:01,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:01,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:01,545 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:01,545 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:01,548 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:01,550 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:01,551 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:01,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:01,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:24:01,557 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:01,560 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:01,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:24:01,561 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:01,561 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:01,561 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread2Thread1of1ForFork1_x) = -2*thread2Thread1of1ForFork1_x + 19999 Supporting invariants [] [2025-04-26 16:24:01,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:01,568 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:01,580 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:01,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:01,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:01,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:01,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:01,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:01,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:01,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:01,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:01,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:01,598 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:01,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:01,612 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:01,612 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 103 transitions. cyclomatic complexity: 70 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:01,637 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 103 transitions. cyclomatic complexity: 70. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 102 states and 245 transitions. Complement of second has 6 states. [2025-04-26 16:24:01,637 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2025-04-26 16:24:01,638 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:01,638 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:01,638 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:01,638 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:01,638 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:24:01,639 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:01,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 245 transitions. [2025-04-26 16:24:01,641 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:01,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 0 states and 0 transitions. [2025-04-26 16:24:01,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:01,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:01,641 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:01,641 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:01,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:01,641 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:01,641 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:01,641 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:01,641 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:01,641 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:01,641 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:01,646 INFO L201 PluginConnector]: Adding new model easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:01 BoogieIcfgContainer [2025-04-26 16:24:01,646 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:01,646 INFO L158 Benchmark]: Toolchain (without parser) took 1340.23ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 82.6MB in the beginning and 78.8MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:01,647 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.79ms. Allocated memory is still 155.2MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:01,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.48ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 80.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:01,647 INFO L158 Benchmark]: Boogie Preprocessor took 17.51ms. Allocated memory is still 155.2MB. Free memory was 80.6MB in the beginning and 79.7MB in the end (delta: 944.4kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:24:01,647 INFO L158 Benchmark]: RCFGBuilder took 198.91ms. Allocated memory is still 155.2MB. Free memory was 79.7MB in the beginning and 70.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:24:01,647 INFO L158 Benchmark]: BuchiAutomizer took 1084.25ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 70.7MB in the beginning and 78.8MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:01,648 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 0.79ms. Allocated memory is still 155.2MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.48ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 80.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 17.51ms. Allocated memory is still 155.2MB. Free memory was 80.6MB in the beginning and 79.7MB in the end (delta: 944.4kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 198.91ms. Allocated memory is still 155.2MB. Free memory was 79.7MB in the beginning and 70.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1084.25ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 70.7MB in the beginning and 78.8MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 43 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 43ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 19999 + x * -2 and consists of 5 locations. One deterministic module has affine ranking function x * -2 + 19999 and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:01,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...