/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/popl20-more/multiply-verify.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:23:24,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:23:24,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:23:24,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:23:24,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:23:24,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:23:24,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:23:24,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:23:24,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:23:24,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:23:24,797 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:23:24,797 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:23:24,797 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:23:24,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:23:24,798 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:23:24,799 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:23:24,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:23:24,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:23:24,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:23:24,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:23:24,799 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:23:24,799 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:23:25,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:23:25,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:23:25,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:23:25,017 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:23:25,017 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:23:25,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/multiply-verify.wvr.bpl [2025-04-26 16:23:25,018 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/multiply-verify.wvr.bpl' [2025-04-26 16:23:25,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:23:25,033 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:23:25,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:23:25,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:23:25,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:23:25,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,060 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:23:25,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:23:25,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:23:25,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:23:25,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:23:25,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,068 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:23:25,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:23:25,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:23:25,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:23:25,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/1) ... [2025-04-26 16:23:25,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,099 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 16:23:25,102 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 16:23:25,117 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:23:25,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:23:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:23:25,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:23:25,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:23:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:23:25,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:23:25,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:23:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:23:25,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:23:25,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:23:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:23:25,119 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 16:23:25,153 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:23:25,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:23:25,224 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:23:25,224 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:23:25,234 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:23:25,234 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:23:25,235 INFO L201 PluginConnector]: Adding new model multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:23:25 BoogieIcfgContainer [2025-04-26 16:23:25,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:23:25,235 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:23:25,235 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:23:25,239 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:23:25,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:23:25,240 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:25" (1/2) ... [2025-04-26 16:23:25,241 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@109caf8c and model type multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:23:25, skipping insertion in model container [2025-04-26 16:23:25,241 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:23:25,241 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:23:25" (2/2) ... [2025-04-26 16:23:25,242 INFO L376 chiAutomizerObserver]: Analyzing ICFG multiply-verify.wvr.bpl [2025-04-26 16:23:25,292 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:23:25,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 93 flow [2025-04-26 16:23:25,347 INFO L116 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-04-26 16:23:25,349 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:23:25,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 2/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-04-26 16:23:25,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 93 flow [2025-04-26 16:23:25,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 30 transitions, 78 flow [2025-04-26 16:23:25,355 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 38 places, 30 transitions, 78 flow [2025-04-26 16:23:25,363 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:23:25,363 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:23:25,363 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:23:25,363 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:23:25,363 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:23:25,363 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:23:25,363 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:23:25,363 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:23:25,364 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:23:25,443 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 210 [2025-04-26 16:23:25,443 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:23:25,443 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:23:25,446 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:23:25,446 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:23:25,446 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:23:25,446 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 370 states, but on-demand construction may add more states [2025-04-26 16:23:25,455 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 210 [2025-04-26 16:23:25,455 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:23:25,455 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:23:25,455 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:23:25,455 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:23:25,463 INFO L752 eck$LassoCheckResult]: Stem: "[67] $Ultimate##0-->L61: Formula: (= v_end_7 v_start_1) InVars {end=v_end_7, start=v_start_1} OutVars{end=v_end_7, start=v_start_1} AuxVars[] AssignedVars[]" "[93] L61-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[72] $Ultimate##0-->L24: Formula: (= v_x1_1 0) InVars {} OutVars{x1=v_x1_1} AuxVars[] AssignedVars[x1]" "[73] L24-->L25-1: Formula: (= v_i1_1 0) InVars {} OutVars{i1=v_i1_1} AuxVars[] AssignedVars[i1]" [2025-04-26 16:23:25,463 INFO L754 eck$LassoCheckResult]: Loop: "[75] L25-1-->L26: Formula: (< v_i1_2 v_A_1) InVars {A=v_A_1, i1=v_i1_2} OutVars{A=v_A_1, i1=v_i1_2} AuxVars[] AssignedVars[]" "[77] L26-->L27: Formula: (= v_x1_2 (+ v_x1_3 v_B_1)) InVars {x1=v_x1_3, B=v_B_1} OutVars{x1=v_x1_2, B=v_B_1} AuxVars[] AssignedVars[x1]" "[79] L27-->L25-1: Formula: (= (+ v_i1_4 1) v_i1_3) InVars {i1=v_i1_4} OutVars{i1=v_i1_3} AuxVars[] AssignedVars[i1]" [2025-04-26 16:23:25,467 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 3011196, now seen corresponding path program 1 times [2025-04-26 16:23:25,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:25,474 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402348934] [2025-04-26 16:23:25,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:25,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:23:25,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:23:25,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:25,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:25,532 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:25,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:23:25,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:23:25,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:25,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:25,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:25,552 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash 104332, now seen corresponding path program 1 times [2025-04-26 16:23:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:25,552 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861279294] [2025-04-26 16:23:25,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:25,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:23:25,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:23:25,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:25,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:25,559 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:25,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:23:25,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:23:25,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:25,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:25,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:25,564 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -487698639, now seen corresponding path program 1 times [2025-04-26 16:23:25,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:25,564 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966566929] [2025-04-26 16:23:25,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:25,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:23:25,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:23:25,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:25,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:25,571 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:25,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:23:25,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:23:25,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:25,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:25,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:25,643 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:25,643 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:25,644 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:25,644 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:25,644 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:23:25,644 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,644 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:25,644 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:25,645 INFO L132 ssoRankerPreferences]: Filename of dumped script: multiply-verify.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:23:25,645 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:25,645 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:25,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:25,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:25,704 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:25,705 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:23:25,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,708 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 16:23:25,710 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 16:23:25,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:25,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:25,728 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:23:25,728 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0, B=0} Honda state: {x1=0, B=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:23:25,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-04-26 16:23:25,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,738 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 16:23:25,767 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 16:23:25,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:25,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:25,786 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 16:23:25,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,788 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 16:23:25,789 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 16:23:25,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:23:25,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:25,864 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:23:25,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:25,868 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:25,868 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:25,868 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:25,868 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:25,868 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:23:25,868 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,868 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:25,869 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:25,869 INFO L132 ssoRankerPreferences]: Filename of dumped script: multiply-verify.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:23:25,869 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:25,869 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:25,870 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:25,874 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:25,911 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:25,914 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:23:25,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,917 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 16:23:25,919 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 16:23:25,921 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 16:23:25,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:25,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:25,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:25,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:25,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:25,940 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:25,941 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:25,943 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:23:25,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:23:25,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,953 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 16:23:25,955 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 16:23:25,955 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 16:23:25,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:25,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:25,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:25,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:25,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:25,970 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:25,970 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:25,973 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:23:25,976 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:23:25,976 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:23:25,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:25,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:25,981 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 16:23:25,982 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 16:23:25,983 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:23:25,985 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:23:25,991 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 16:23:25,991 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:23:25,991 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:23:25,992 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, A) = -1*i1 + 1*A Supporting invariants [] [2025-04-26 16:23:25,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:26,000 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:23:26,031 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:26,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:23:26,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:23:26,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:26,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:23:26,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:26,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:23:26,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:23:26,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:26,088 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:23:26,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:26,121 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 16:23:26,162 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 16:23:26,179 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 370 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 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 16:23:26,307 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 370 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 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 855 states and 2741 transitions. Complement of second has 7 states. [2025-04-26 16:23:26,310 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 16:23:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 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 16:23:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-04-26 16:23:26,319 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 71 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:23:26,319 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:26,319 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 71 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:23:26,320 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:26,320 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 71 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:23:26,320 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:26,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 855 states and 2741 transitions. [2025-04-26 16:23:26,334 INFO L131 ngComponentsAnalysis]: Automaton has 44 accepting balls. 132 [2025-04-26 16:23:26,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 855 states to 432 states and 1389 transitions. [2025-04-26 16:23:26,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 252 [2025-04-26 16:23:26,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 329 [2025-04-26 16:23:26,351 INFO L74 IsDeterministic]: Start isDeterministic. Operand 432 states and 1389 transitions. [2025-04-26 16:23:26,351 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:23:26,351 INFO L218 hiAutomatonCegarLoop]: Abstraction has 432 states and 1389 transitions. [2025-04-26 16:23:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states and 1389 transitions. [2025-04-26 16:23:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 358. [2025-04-26 16:23:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 358 states have (on average 3.2346368715083798) internal successors, (in total 1158), 357 states have internal predecessors, (1158), 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 16:23:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1158 transitions. [2025-04-26 16:23:26,391 INFO L240 hiAutomatonCegarLoop]: Abstraction has 358 states and 1158 transitions. [2025-04-26 16:23:26,392 INFO L438 stractBuchiCegarLoop]: Abstraction has 358 states and 1158 transitions. [2025-04-26 16:23:26,392 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:23:26,392 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 358 states and 1158 transitions. [2025-04-26 16:23:26,395 INFO L131 ngComponentsAnalysis]: Automaton has 44 accepting balls. 132 [2025-04-26 16:23:26,395 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:23:26,395 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:23:26,395 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:23:26,395 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:23:26,395 INFO L752 eck$LassoCheckResult]: Stem: "[67] $Ultimate##0-->L61: Formula: (= v_end_7 v_start_1) InVars {end=v_end_7, start=v_start_1} OutVars{end=v_end_7, start=v_start_1} AuxVars[] AssignedVars[]" "[93] L61-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[96] L61-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[80] $Ultimate##0-->L39: Formula: (= v_x2_4 0) InVars {} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[81] L39-->L40-1: Formula: (= v_i2_5 0) InVars {} OutVars{i2=v_i2_5} AuxVars[] AssignedVars[i2]" [2025-04-26 16:23:26,395 INFO L754 eck$LassoCheckResult]: Loop: "[83] L40-1-->L41: Formula: (< v_i2_1 v_A_3) InVars {A=v_A_3, i2=v_i2_1} OutVars{A=v_A_3, i2=v_i2_1} AuxVars[] AssignedVars[]" "[85] L41-->L42: Formula: (= v_x2_1 (+ v_x2_2 v_B_2)) InVars {x2=v_x2_2, B=v_B_2} OutVars{x2=v_x2_1, B=v_B_2} AuxVars[] AssignedVars[x2]" "[87] L42-->L40-1: Formula: (= v_i2_2 (+ v_i2_3 1)) InVars {i2=v_i2_3} OutVars{i2=v_i2_2} AuxVars[] AssignedVars[i2]" [2025-04-26 16:23:26,396 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 93370438, now seen corresponding path program 1 times [2025-04-26 16:23:26,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:26,396 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293069904] [2025-04-26 16:23:26,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:26,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:26,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:23:26,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:23:26,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:26,400 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:26,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:23:26,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:23:26,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:26,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:26,404 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash 112276, now seen corresponding path program 1 times [2025-04-26 16:23:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:26,404 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715821902] [2025-04-26 16:23:26,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:26,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:23:26,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:23:26,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:26,407 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:26,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:23:26,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:23:26,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:26,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:26,412 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1540006865, now seen corresponding path program 1 times [2025-04-26 16:23:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:26,412 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332515662] [2025-04-26 16:23:26,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:26,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:23:26,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:23:26,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:26,419 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:26,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:23:26,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:23:26,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:26,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:26,444 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:26,444 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:26,444 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:26,444 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:26,444 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:23:26,444 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,444 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:26,444 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:26,444 INFO L132 ssoRankerPreferences]: Filename of dumped script: multiply-verify.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:23:26,444 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:26,444 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:26,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:26,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:26,479 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:26,479 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:23:26,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:26,481 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 16:23:26,482 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 16:23:26,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:26,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:26,493 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:23:26,493 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x2=0, B=0} Honda state: {x2=0, B=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:23:26,499 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 16:23:26,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:26,500 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 16:23:26,501 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 16:23:26,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:26,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:26,518 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 16:23:26,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:26,520 INFO L229 MonitoredProcess]: Starting monitored process 10 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 16:23:26,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:23:26,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:23:26,522 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:26,589 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:23:26,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:23:26,594 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:26,594 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:26,594 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:26,594 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:26,594 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:23:26,594 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,594 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:26,594 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:26,594 INFO L132 ssoRankerPreferences]: Filename of dumped script: multiply-verify.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:23:26,594 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:26,594 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:26,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:26,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:26,621 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:26,621 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:23:26,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:26,623 INFO L229 MonitoredProcess]: Starting monitored process 11 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 16:23:26,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:23:26,626 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 16:23:26,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:26,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:26,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:26,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:26,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:26,638 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:26,638 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:26,641 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:23:26,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:23:26,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:26,652 INFO L229 MonitoredProcess]: Starting monitored process 12 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 16:23:26,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:23:26,655 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 16:23:26,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:26,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:26,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:26,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:26,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:26,666 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:26,666 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:26,668 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:23:26,670 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:23:26,670 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:23:26,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:26,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:26,672 INFO L229 MonitoredProcess]: Starting monitored process 13 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 16:23:26,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:23:26,673 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:23:26,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:23:26,677 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:23:26,677 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:23:26,677 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, A) = -1*i2 + 1*A Supporting invariants [] [2025-04-26 16:23:26,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:26,683 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:23:26,695 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:26,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:23:26,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:23:26,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:26,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:23:26,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:26,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:23:26,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:23:26,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:26,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:26,712 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:23:26,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:26,730 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 16:23:26,731 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 16:23:26,731 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 358 states and 1158 transitions. cyclomatic complexity: 860 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 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 16:23:26,783 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 358 states and 1158 transitions. cyclomatic complexity: 860. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 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 902 states and 3103 transitions. Complement of second has 6 states. [2025-04-26 16:23:26,784 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 16:23:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 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 16:23:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2025-04-26 16:23:26,785 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 61 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:23:26,785 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:26,785 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 61 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 16:23:26,785 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:26,785 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 61 transitions. Stem has 5 letters. Loop has 6 letters. [2025-04-26 16:23:26,785 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:26,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 902 states and 3103 transitions. [2025-04-26 16:23:26,794 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:23:26,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 902 states to 0 states and 0 transitions. [2025-04-26 16:23:26,795 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:23:26,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:23:26,795 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:23:26,795 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:23:26,795 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:26,795 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:26,795 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:26,795 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:23:26,795 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:23:26,795 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:23:26,795 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:23:26,800 INFO L201 PluginConnector]: Adding new model multiply-verify.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:23:26 BoogieIcfgContainer [2025-04-26 16:23:26,800 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:23:26,800 INFO L158 Benchmark]: Toolchain (without parser) took 1767.95ms. Allocated memory is still 155.2MB. Free memory was 82.0MB in the beginning and 60.4MB in the end (delta: 21.6MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. [2025-04-26 16:23:26,801 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:23:26,801 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.80ms. Allocated memory is still 155.2MB. Free memory was 81.9MB in the beginning and 80.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:23:26,801 INFO L158 Benchmark]: Boogie Preprocessor took 17.59ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 79.1MB in the end (delta: 964.7kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:23:26,801 INFO L158 Benchmark]: RCFGBuilder took 155.49ms. Allocated memory is still 155.2MB. Free memory was 79.0MB in the beginning and 69.3MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:23:26,801 INFO L158 Benchmark]: BuchiAutomizer took 1564.47ms. Allocated memory is still 155.2MB. Free memory was 69.2MB in the beginning and 60.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. [2025-04-26 16:23:26,802 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 0.20ms. Allocated memory is still 155.2MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.80ms. Allocated memory is still 155.2MB. Free memory was 81.9MB in the beginning and 80.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 17.59ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 79.1MB in the end (delta: 964.7kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 155.49ms. Allocated memory is still 155.2MB. Free memory was 79.0MB in the beginning and 69.3MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1564.47ms. Allocated memory is still 155.2MB. Free memory was 69.2MB in the beginning and 60.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 74 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, 99 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 63 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s 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 A + -1 * i1 and consists of 5 locations. One deterministic module has affine ranking function -1 * i2 + A 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 16:23:26,818 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...