/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 /storage/cav23-termute-examples/4_plus_thr/lock5.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:25:53,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:25:53,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:25:53,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:25:53,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:25:53,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:25:53,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:25:53,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:25:53,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:25:53,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:25:53,764 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:25:53,764 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:25:53,764 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:25:53,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:25:53,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:25:53,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:25:53,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:25:53,767 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:25:53,767 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:25:53,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:25:54,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:25:54,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:25:54,009 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:25:54,010 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:25:54,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/lock5.c.bpl [2025-04-26 16:25:54,014 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/lock5.c.bpl' [2025-04-26 16:25:54,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:25:54,027 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:25:54,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:25:54,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:25:54,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:25:54,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,063 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:25:54,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:25:54,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:25:54,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:25:54,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:25:54,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:25:54,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:25:54,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:25:54,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:25:54,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/1) ... [2025-04-26 16:25:54,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:54,118 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 16:25:54,129 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 16:25:54,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:25:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:25:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:25:54,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:25:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:25:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:25:54,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:25:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:25:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:25:54,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:25:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:25:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:25:54,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:25:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:25:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:25:54,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:25:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:25:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:25:54,156 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 16:25:54,192 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:25:54,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:25:54,276 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:25:54,276 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:25:54,289 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:25:54,289 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:25:54,289 INFO L201 PluginConnector]: Adding new model lock5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:25:54 BoogieIcfgContainer [2025-04-26 16:25:54,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:25:54,290 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:25:54,290 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:25:54,294 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:25:54,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:25:54,295 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:25:54" (1/2) ... [2025-04-26 16:25:54,296 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e2b4217 and model type lock5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:25:54, skipping insertion in model container [2025-04-26 16:25:54,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:25:54,296 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:25:54" (2/2) ... [2025-04-26 16:25:54,297 INFO L376 chiAutomizerObserver]: Analyzing ICFG lock5.c.bpl [2025-04-26 16:25:54,359 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-26 16:25:54,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 56 transitions, 147 flow [2025-04-26 16:25:54,413 INFO L116 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-04-26 16:25:54,415 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-26 16:25:54,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 46 events. 5/46 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-04-26 16:25:54,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 56 transitions, 147 flow [2025-04-26 16:25:54,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 46 transitions, 122 flow [2025-04-26 16:25:54,422 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 57 places, 46 transitions, 122 flow [2025-04-26 16:25:54,429 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:25:54,430 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:25:54,430 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:25:54,430 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:25:54,430 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:25:54,430 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:25:54,430 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:25:54,430 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:25:54,431 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:25:56,142 INFO L131 ngComponentsAnalysis]: Automaton has 2981 accepting balls. 20703 [2025-04-26 16:25:56,142 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:56,142 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:56,148 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:56,148 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:25:56,148 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:25:56,148 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 22409 states, but on-demand construction may add more states [2025-04-26 16:25:56,655 INFO L131 ngComponentsAnalysis]: Automaton has 2981 accepting balls. 20703 [2025-04-26 16:25:56,656 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:56,656 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:56,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:56,658 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:25:56,663 INFO L752 eck$LassoCheckResult]: Stem: "[159] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[122] $Ultimate##0-->L32: Formula: (and (= v_l_16 0) (< 0 v_l_17)) InVars {l=v_l_17} OutVars{l=v_l_16} AuxVars[] AssignedVars[l]" [2025-04-26 16:25:56,665 INFO L754 eck$LassoCheckResult]: Loop: "[124] L32-->L34: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[126] L34-->L35: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[128] L35-->L32: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 16:25:56,669 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash 6012, now seen corresponding path program 1 times [2025-04-26 16:25:56,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:56,675 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729241044] [2025-04-26 16:25:56,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:56,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:56,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:56,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:56,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:56,735 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:56,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:56,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:56,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:56,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:56,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:56,759 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash 152989, now seen corresponding path program 1 times [2025-04-26 16:25:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:56,760 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086612194] [2025-04-26 16:25:56,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:56,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:56,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:56,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:56,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:56,771 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:56,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:56,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:56,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:56,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:56,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:56,780 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash 179226690, now seen corresponding path program 1 times [2025-04-26 16:25:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:56,780 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653268445] [2025-04-26 16:25:56,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:56,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:56,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:56,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:56,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:56,787 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:56,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:56,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:56,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:56,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:56,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:56,855 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:56,856 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:56,856 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:56,856 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:56,856 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:56,856 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:56,856 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:56,856 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:56,856 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:56,856 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:56,856 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:56,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:56,875 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:56,918 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:56,918 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:56,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:56,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:56,923 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 16:25:56,926 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 16:25:56,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:56,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:56,949 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 16:25:56,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:56,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:56,952 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 16:25:56,953 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 16:25:56,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:56,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:56,984 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:25:56,984 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x2=0} Honda state: {x2=0} Generalized eigenvectors: [{x2=-8}, {x2=3}, {x2=4}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-04-26 16:25:56,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:25:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:56,992 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 16:25:56,993 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 16:25:56,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:56,995 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:57,012 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 16:25:57,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:57,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:57,014 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 16:25:57,015 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 16:25:57,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:57,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:57,086 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:57,091 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 16:25:57,091 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:57,091 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:57,091 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:57,091 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:57,091 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:57,091 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:57,091 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:57,091 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:57,091 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:57,091 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:57,091 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:57,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:57,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:57,125 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:57,128 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:57,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:57,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:57,131 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 16:25:57,133 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 16:25:57,135 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 16:25:57,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:57,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:57,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:57,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:57,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:57,152 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:57,153 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:57,155 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:25:57,162 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 16:25:57,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:57,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:57,164 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 16:25:57,166 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 16:25:57,167 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 16:25:57,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:57,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:57,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:57,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:57,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:57,180 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:57,180 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:57,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:57,191 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:57,192 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:57,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:57,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:57,195 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 16:25:57,228 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 16:25:57,229 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:57,233 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 16:25:57,233 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:57,233 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:57,234 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:25:57,239 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 16:25:57,245 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:57,268 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:57,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:57,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:57,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:57,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:57,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:57,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:57,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:57,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:57,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:57,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:57,328 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:57,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:57,398 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 16:25:57,438 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:25:57,447 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 22409 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 16:25:58,926 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 22409 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 74255 states and 397250 transitions. Complement of second has 7 states. [2025-04-26 16:25:58,928 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 16:25:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 16:25:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2025-04-26 16:25:58,939 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 142 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:25:58,940 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:58,940 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 142 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:25:58,940 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:58,941 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 142 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:25:58,941 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:58,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74255 states and 397250 transitions. [2025-04-26 16:26:00,916 INFO L131 ngComponentsAnalysis]: Automaton has 5718 accepting balls. 32190 [2025-04-26 16:26:02,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74255 states to 61267 states and 330920 transitions. [2025-04-26 16:26:02,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38823 [2025-04-26 16:26:02,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50388 [2025-04-26 16:26:02,310 INFO L74 IsDeterministic]: Start isDeterministic. Operand 61267 states and 330920 transitions. [2025-04-26 16:26:02,311 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:02,311 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61267 states and 330920 transitions. [2025-04-26 16:26:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61267 states and 330920 transitions. [2025-04-26 16:26:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61267 to 41493. [2025-04-26 16:26:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41493 states, 41493 states have (on average 5.629792977128672) internal successors, (in total 233597), 41492 states have internal predecessors, (233597), 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 16:26:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41493 states to 41493 states and 233597 transitions. [2025-04-26 16:26:04,730 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41493 states and 233597 transitions. [2025-04-26 16:26:04,730 INFO L438 stractBuchiCegarLoop]: Abstraction has 41493 states and 233597 transitions. [2025-04-26 16:26:04,730 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:26:04,730 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41493 states and 233597 transitions. [2025-04-26 16:26:05,295 INFO L131 ngComponentsAnalysis]: Automaton has 4194 accepting balls. 25278 [2025-04-26 16:26:05,296 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:05,296 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:05,298 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:26:05,298 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:05,299 INFO L752 eck$LassoCheckResult]: Stem: "[159] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[162] L12-->$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]" "[129] $Ultimate##0-->L48: Formula: (and (< 0 v_l_21) (= v_l_20 0)) InVars {l=v_l_21} OutVars{l=v_l_20} AuxVars[] AssignedVars[l]" [2025-04-26 16:26:05,299 INFO L754 eck$LassoCheckResult]: Loop: "[131] L48-->L50: Formula: (< v_x2_3 v_z_3) InVars {x2=v_x2_3, z=v_z_3} OutVars{x2=v_x2_3, z=v_z_3} AuxVars[] AssignedVars[]" "[133] L50-->L51: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[135] L51-->L48: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-04-26 16:26:05,299 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash 187741, now seen corresponding path program 1 times [2025-04-26 16:26:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:05,300 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314124281] [2025-04-26 16:26:05,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:05,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:05,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:05,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:05,304 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:05,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:05,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:05,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:05,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:05,307 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 159940, now seen corresponding path program 1 times [2025-04-26 16:26:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:05,307 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351161555] [2025-04-26 16:26:05,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:05,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:05,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:05,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:05,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:05,310 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:05,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:05,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:05,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:05,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:05,313 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1298154984, now seen corresponding path program 1 times [2025-04-26 16:26:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:05,313 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795398558] [2025-04-26 16:26:05,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:05,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:05,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:05,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:05,317 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:05,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:05,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:05,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:05,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:05,349 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:05,350 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:05,350 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:05,350 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:05,350 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:05,350 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:05,350 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:05,350 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:05,350 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:05,350 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:05,350 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:05,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:05,356 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:05,392 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:05,392 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:05,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:05,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:05,395 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 16:26:05,397 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 16:26:05,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:05,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:05,419 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 16:26:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:05,422 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 16:26:05,424 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 16:26:05,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:05,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:05,500 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:05,505 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 16:26:05,505 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:05,506 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:05,506 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:05,506 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:05,506 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:05,506 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:05,506 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:05,506 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:05,506 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:05,506 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:05,506 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:05,507 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:05,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:05,538 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:05,538 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:05,541 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 16:26:05,542 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 16:26:05,543 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 16:26:05,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:05,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:05,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:05,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:05,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:05,554 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:05,554 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:05,556 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:05,558 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:05,558 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:05,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:05,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:05,560 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 16:26:05,561 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 16:26:05,561 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:05,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:26:05,565 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:05,565 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:05,565 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 16:26:05,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:05,571 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:05,587 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:05,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:05,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:05,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:05,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:05,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:05,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:05,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:05,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:05,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:05,602 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:05,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:05,638 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 16:26:05,639 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:05,639 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41493 states and 233597 transitions. cyclomatic complexity: 197248 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 16:26:08,099 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41493 states and 233597 transitions. cyclomatic complexity: 197248. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 152959 states and 879521 transitions. Complement of second has 7 states. [2025-04-26 16:26:08,100 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 16:26:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 16:26:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2025-04-26 16:26:08,101 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 140 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:26:08,101 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:08,101 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 140 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:26:08,101 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:08,101 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 140 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:26:08,101 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:08,101 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152959 states and 879521 transitions. [2025-04-26 16:26:11,593 INFO L131 ngComponentsAnalysis]: Automaton has 8216 accepting balls. 41916 [2025-04-26 16:26:13,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152959 states to 127891 states and 740991 transitions. [2025-04-26 16:26:13,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57112 [2025-04-26 16:26:14,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73895 [2025-04-26 16:26:14,330 INFO L74 IsDeterministic]: Start isDeterministic. Operand 127891 states and 740991 transitions. [2025-04-26 16:26:14,331 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:14,331 INFO L218 hiAutomatonCegarLoop]: Abstraction has 127891 states and 740991 transitions. [2025-04-26 16:26:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127891 states and 740991 transitions. [2025-04-26 16:26:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127891 to 91034. [2025-04-26 16:26:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91034 states, 91034 states have (on average 6.086528110376343) internal successors, (in total 554081), 91033 states have internal predecessors, (554081), 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 16:26:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91034 states to 91034 states and 554081 transitions. [2025-04-26 16:26:18,879 INFO L240 hiAutomatonCegarLoop]: Abstraction has 91034 states and 554081 transitions. [2025-04-26 16:26:18,879 INFO L438 stractBuchiCegarLoop]: Abstraction has 91034 states and 554081 transitions. [2025-04-26 16:26:18,879 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:26:18,880 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91034 states and 554081 transitions. [2025-04-26 16:26:20,124 INFO L131 ngComponentsAnalysis]: Automaton has 6198 accepting balls. 33312 [2025-04-26 16:26:20,124 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:20,124 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:20,128 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:26:20,128 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:20,128 INFO L752 eck$LassoCheckResult]: Stem: "[159] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[162] L12-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[165] L13-->$Ultimate##0: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[136] $Ultimate##0-->L64: Formula: (and (= v_l_24 0) (< 0 v_l_25)) InVars {l=v_l_25} OutVars{l=v_l_24} AuxVars[] AssignedVars[l]" [2025-04-26 16:26:20,128 INFO L754 eck$LassoCheckResult]: Loop: "[138] L64-->L66: Formula: (< v_x3_4 v_z_6) InVars {x3=v_x3_4, z=v_z_6} OutVars{x3=v_x3_4, z=v_z_6} AuxVars[] AssignedVars[]" "[140] L66-->L67: Formula: (= (+ v_x3_6 1) v_x3_5) InVars {x3=v_x3_6} OutVars{x3=v_x3_5} AuxVars[] AssignedVars[x3]" "[142] L67-->L64: Formula: (= v_x4_2 (+ v_x4_1 1)) InVars {x4=v_x4_2} OutVars{x4=v_x4_1} AuxVars[] AssignedVars[x4]" [2025-04-26 16:26:20,129 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 5821223, now seen corresponding path program 1 times [2025-04-26 16:26:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:20,129 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141016560] [2025-04-26 16:26:20,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:20,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:20,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:20,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,133 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:20,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:20,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:20,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:20,136 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash 166891, now seen corresponding path program 1 times [2025-04-26 16:26:20,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:20,136 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970424406] [2025-04-26 16:26:20,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:20,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:20,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,139 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:20,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:20,143 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1621499653, now seen corresponding path program 1 times [2025-04-26 16:26:20,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:20,143 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406781303] [2025-04-26 16:26:20,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:20,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:20,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:20,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,148 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:20,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:20,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:20,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:20,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:20,173 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:20,173 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:20,173 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:20,173 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:20,173 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:20,173 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,173 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:20,174 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:20,174 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:20,174 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:20,174 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:20,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,181 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,211 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:20,211 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:20,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,214 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 16:26:20,216 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 16:26:20,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:20,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,242 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 16:26:20,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,247 INFO L229 MonitoredProcess]: Starting monitored process 14 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 16:26:20,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:26:20,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:20,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,277 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:20,277 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x4=0} Honda state: {x4=0} Generalized eigenvectors: [{x4=-5}, {x4=-3}, {x4=7}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-04-26 16:26:20,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:26:20,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,286 INFO L229 MonitoredProcess]: Starting monitored process 15 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 16:26:20,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:26:20,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:20,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:26:20,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,310 INFO L229 MonitoredProcess]: Starting monitored process 16 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 16:26:20,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:26:20,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:20,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:20,395 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:20,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,400 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:20,400 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:20,400 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:20,400 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:20,400 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:20,400 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,400 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:20,400 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:20,400 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:20,400 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:20,400 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:20,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,405 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:20,436 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:20,436 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:20,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,439 INFO L229 MonitoredProcess]: Starting monitored process 17 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 16:26:20,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:26:20,442 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 16:26:20,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:20,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:20,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:20,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:20,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:20,454 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:20,455 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:20,456 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:20,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,465 INFO L229 MonitoredProcess]: Starting monitored process 18 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 16:26:20,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:26:20,467 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 16:26:20,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:20,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:20,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:20,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:20,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:20,480 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:20,480 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:20,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:20,484 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:20,484 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:20,486 INFO L229 MonitoredProcess]: Starting monitored process 19 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 16:26:20,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:26:20,490 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:20,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:20,498 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:20,498 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:20,498 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 16:26:20,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:26:20,507 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:20,523 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:20,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:20,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:20,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:20,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:20,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:20,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:20,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:20,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:20,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:20,543 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:20,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:20,572 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 16:26:20,572 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:20,573 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 91034 states and 554081 transitions. cyclomatic complexity: 473387 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 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 16:26:26,226 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 91034 states and 554081 transitions. cyclomatic complexity: 473387. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 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 349185 states and 2127849 transitions. Complement of second has 7 states. [2025-04-26 16:26:26,227 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 16:26:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 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 16:26:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2025-04-26 16:26:26,228 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 140 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:26:26,228 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:26,228 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 140 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:26:26,228 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:26,228 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 140 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:26:26,228 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:26,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349185 states and 2127849 transitions. [2025-04-26 16:26:34,201 INFO L131 ngComponentsAnalysis]: Automaton has 11163 accepting balls. 51903 [2025-04-26 16:26:39,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349185 states to 282181 states and 1730495 transitions. [2025-04-26 16:26:39,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89809 [2025-04-26 16:26:40,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113014 [2025-04-26 16:26:40,112 INFO L74 IsDeterministic]: Start isDeterministic. Operand 282181 states and 1730495 transitions. [2025-04-26 16:26:40,112 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:40,113 INFO L218 hiAutomatonCegarLoop]: Abstraction has 282181 states and 1730495 transitions. [2025-04-26 16:26:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282181 states and 1730495 transitions. [2025-04-26 16:26:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282181 to 208346. [2025-04-26 16:26:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208346 states, 208346 states have (on average 6.386126923483053) internal successors, (in total 1330524), 208345 states have internal predecessors, (1330524), 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 16:26:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208346 states to 208346 states and 1330524 transitions. [2025-04-26 16:26:49,783 INFO L240 hiAutomatonCegarLoop]: Abstraction has 208346 states and 1330524 transitions. [2025-04-26 16:26:49,783 INFO L438 stractBuchiCegarLoop]: Abstraction has 208346 states and 1330524 transitions. [2025-04-26 16:26:49,783 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:26:49,783 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 208346 states and 1330524 transitions. [2025-04-26 16:26:52,343 INFO L131 ngComponentsAnalysis]: Automaton has 8669 accepting balls. 42291 [2025-04-26 16:26:52,343 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:52,343 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:52,349 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:26:52,349 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:52,349 INFO L752 eck$LassoCheckResult]: Stem: "[159] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[162] L12-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[165] L13-->$Ultimate##0: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[168] L14-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[143] $Ultimate##0-->L80: Formula: (and (< 0 v_l_29) (= v_l_28 0)) InVars {l=v_l_29} OutVars{l=v_l_28} AuxVars[] AssignedVars[l]" [2025-04-26 16:26:52,349 INFO L754 eck$LassoCheckResult]: Loop: "[145] L80-->L82: Formula: (< v_x4_3 v_z_7) InVars {x4=v_x4_3, z=v_z_7} OutVars{x4=v_x4_3, z=v_z_7} AuxVars[] AssignedVars[]" "[147] L82-->L83: Formula: (= v_x4_4 (+ v_x4_5 1)) InVars {x4=v_x4_5} OutVars{x4=v_x4_4} AuxVars[] AssignedVars[x4]" "[149] L83-->L80: Formula: (= v_x5_2 (+ v_x5_1 1)) InVars {x5=v_x5_2} OutVars{x5=v_x5_1} AuxVars[] AssignedVars[x5]" [2025-04-26 16:26:52,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash 180459048, now seen corresponding path program 1 times [2025-04-26 16:26:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:52,350 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598365014] [2025-04-26 16:26:52,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:52,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:52,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:52,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:52,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:52,354 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:52,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:52,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:52,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:52,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:52,357 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 173842, now seen corresponding path program 1 times [2025-04-26 16:26:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:52,357 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943826205] [2025-04-26 16:26:52,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:52,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:52,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:52,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:52,360 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:52,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:52,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:52,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:52,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:52,362 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1243411573, now seen corresponding path program 1 times [2025-04-26 16:26:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:52,363 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865607605] [2025-04-26 16:26:52,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:52,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:26:52,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:26:52,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:52,367 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:52,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:26:52,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:26:52,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:52,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:52,402 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:52,402 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:52,402 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:52,402 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:52,402 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:52,402 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,402 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:52,402 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:52,402 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:52,402 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:52,402 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:52,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:52,406 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:52,424 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:52,424 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:52,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,426 INFO L229 MonitoredProcess]: Starting monitored process 20 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 16:26:52,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:26:52,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:52,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:52,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 16:26:52,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,449 INFO L229 MonitoredProcess]: Starting monitored process 21 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 16:26:52,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:26:52,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:52,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:52,473 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:52,473 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x5=0} Honda state: {x5=0} Generalized eigenvectors: [{x5=6}, {x5=-6}, {x5=-1}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-04-26 16:26:52,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:26:52,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,480 INFO L229 MonitoredProcess]: Starting monitored process 22 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 16:26:52,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:26:52,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:52,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:52,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:26:52,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,499 INFO L229 MonitoredProcess]: Starting monitored process 23 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 16:26:52,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:26:52,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:52,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:52,564 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:52,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:52,568 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:52,568 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:52,568 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:52,568 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:52,568 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:52,568 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,569 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:52,569 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:52,569 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock5.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:52,569 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:52,569 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:52,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:52,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:52,597 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:52,597 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,600 INFO L229 MonitoredProcess]: Starting monitored process 24 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 16:26:52,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:26:52,602 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 16:26:52,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:52,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:52,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:52,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:52,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:52,613 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:52,613 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:52,618 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:52,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:52,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,626 INFO L229 MonitoredProcess]: Starting monitored process 25 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 16:26:52,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:26:52,627 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 16:26:52,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:52,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:52,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:52,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:52,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:52,638 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:52,638 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:52,640 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:52,642 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:52,642 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:52,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:52,644 INFO L229 MonitoredProcess]: Starting monitored process 26 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 16:26:52,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:26:52,648 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:52,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 16:26:52,655 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:52,655 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:52,655 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-04-26 16:26:52,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:26:52,662 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:52,678 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:52,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:52,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:52,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:52,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:52,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:52,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:52,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:52,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:52,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:52,699 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:52,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:52,726 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 16:26:52,726 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:52,727 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 208346 states and 1330524 transitions. cyclomatic complexity: 1143814 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 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)