/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/m7.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:47:08,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:47:08,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:47:08,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:47:08,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:47:08,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:47:08,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:47:08,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:47:08,239 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:47:08,239 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:47:08,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:47:08,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:47:08,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:47:08,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:47:08,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:47:08,241 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:47:08,241 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:47:08,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:47:08,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:47:08,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:47:08,442 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:47:08,443 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:47:08,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/m7.c.bpl [2025-02-17 22:47:08,446 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/m7.c.bpl' [2025-02-17 22:47:08,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:47:08,461 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:47:08,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:08,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:47:08,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:47:08,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,479 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:47:08,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:08,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:47:08,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:47:08,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:47:08,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,487 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:47:08,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:47:08,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:47:08,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:47:08,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/1) ... [2025-02-17 22:47:08,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:08,517 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) [2025-02-17 22:47:08,521 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 [2025-02-17 22:47:08,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:47:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:47:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:47:08,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:47:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:47:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:47:08,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:47:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:47:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:47:08,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:47:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:47:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:47:08,537 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:47:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:47:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:47:08,537 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:47:08,572 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:47:08,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:47:08,649 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:47:08,649 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:47:08,660 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:47:08,661 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:47:08,661 INFO L201 PluginConnector]: Adding new model m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:08 BoogieIcfgContainer [2025-02-17 22:47:08,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:47:08,664 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:47:08,664 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:47:08,668 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:47:08,669 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:08,669 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:08" (1/2) ... [2025-02-17 22:47:08,670 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cdf6d84 and model type m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:47:08, skipping insertion in model container [2025-02-17 22:47:08,671 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:08,671 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:08" (2/2) ... [2025-02-17 22:47:08,672 INFO L363 chiAutomizerObserver]: Analyzing ICFG m7.c.bpl [2025-02-17 22:47:08,739 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:47:08,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 100 flow [2025-02-17 22:47:08,805 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-17 22:47:08,808 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:47:08,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-17 22:47:08,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 100 flow [2025-02-17 22:47:08,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 28 transitions, 80 flow [2025-02-17 22:47:08,829 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:47:08,830 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:47:08,830 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:47:08,830 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:47:08,830 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:47:08,830 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:47:08,830 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:47:08,830 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:47:08,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:47:09,007 INFO L131 ngComponentsAnalysis]: Automaton has 176 accepting balls. 546 [2025-02-17 22:47:09,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:09,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:09,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:09,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:09,011 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:47:09,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 633 states, but on-demand construction may add more states [2025-02-17 22:47:09,054 INFO L131 ngComponentsAnalysis]: Automaton has 176 accepting balls. 546 [2025-02-17 22:47:09,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:09,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:09,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:09,057 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:09,062 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:47:09,063 INFO L754 eck$LassoCheckResult]: Loop: "[70] L26-->L28: 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[]" "[72] L28-->L26: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:47:09,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2972, now seen corresponding path program 1 times [2025-02-17 22:47:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620128208] [2025-02-17 22:47:09,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,132 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 3203, now seen corresponding path program 1 times [2025-02-17 22:47:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136004684] [2025-02-17 22:47:09,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,167 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2858334, now seen corresponding path program 1 times [2025-02-17 22:47:09,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713754585] [2025-02-17 22:47:09,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:09,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:09,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,187 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:09,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:09,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,251 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:09,251 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:09,252 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:09,252 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:09,252 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:09,252 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,252 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:09,252 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:09,252 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:09,252 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:09,252 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:09,262 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:09,310 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:09,310 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:09,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,313 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) [2025-02-17 22:47:09,315 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 [2025-02-17 22:47:09,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:09,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:09,337 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 [2025-02-17 22:47:09,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,339 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) [2025-02-17 22:47:09,340 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 [2025-02-17 22:47:09,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:09,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:09,409 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:09,414 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 [2025-02-17 22:47:09,414 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:09,414 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:09,414 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:09,414 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:09,414 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:09,414 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,414 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:09,414 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:09,414 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:09,414 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:09,414 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:09,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:09,437 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:09,440 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:09,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,443 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) [2025-02-17 22:47:09,444 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 [2025-02-17 22:47:09,445 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 [2025-02-17 22:47:09,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:09,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:09,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:09,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:09,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:09,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:09,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:09,468 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:09,473 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:09,473 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:09,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,478 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) [2025-02-17 22:47:09,479 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 [2025-02-17 22:47:09,480 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:09,480 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:09,481 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:09,481 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:47:09,487 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 [2025-02-17 22:47:09,490 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:09,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:09,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:09,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:09,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:09,531 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:09,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:09,583 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 [2025-02-17 22:47:09,592 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:09,595 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 633 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:09,794 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 633 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2212 states and 9066 transitions. Complement of second has 7 states. [2025-02-17 22:47:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-02-17 22:47:09,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:47:09,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:09,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:47:09,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:09,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:47:09,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:09,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2212 states and 9066 transitions. [2025-02-17 22:47:09,838 INFO L131 ngComponentsAnalysis]: Automaton has 320 accepting balls. 872 [2025-02-17 22:47:09,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2212 states to 1648 states and 6830 transitions. [2025-02-17 22:47:09,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1041 [2025-02-17 22:47:09,874 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1355 [2025-02-17 22:47:09,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1648 states and 6830 transitions. [2025-02-17 22:47:09,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:09,876 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1648 states and 6830 transitions. [2025-02-17 22:47:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states and 6830 transitions. [2025-02-17 22:47:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1039. [2025-02-17 22:47:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1039 states have (on average 4.304138594802695) internal successors, (4472), 1038 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 4472 transitions. [2025-02-17 22:47:09,966 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1039 states and 4472 transitions. [2025-02-17 22:47:09,966 INFO L432 stractBuchiCegarLoop]: Abstraction has 1039 states and 4472 transitions. [2025-02-17 22:47:09,966 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:47:09,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1039 states and 4472 transitions. [2025-02-17 22:47:09,975 INFO L131 ngComponentsAnalysis]: Automaton has 222 accepting balls. 642 [2025-02-17 22:47:09,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:09,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:09,976 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:47:09,976 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:09,977 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[92] L13-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[95] L14-->L46: 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]" [2025-02-17 22:47:09,977 INFO L754 eck$LassoCheckResult]: Loop: "[80] L46-->L48: Formula: (< v_x2_1 v_w_1) InVars {x2=v_x2_1, w=v_w_1} OutVars{x2=v_x2_1, w=v_w_1} AuxVars[] AssignedVars[]" "[82] L48-->L46: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:47:09,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2859039, now seen corresponding path program 1 times [2025-02-17 22:47:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109360611] [2025-02-17 22:47:09,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:09,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:09,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,984 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:09,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:09,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 3523, now seen corresponding path program 1 times [2025-02-17 22:47:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367684546] [2025-02-17 22:47:09,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,992 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1547428255, now seen corresponding path program 1 times [2025-02-17 22:47:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445286176] [2025-02-17 22:47:09,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:10,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:10,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:10,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:10,002 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:10,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:10,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:10,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:10,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:10,023 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:10,023 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:10,023 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:10,023 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:10,023 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:10,023 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,023 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:10,023 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:10,023 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:10,023 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:10,023 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:10,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:10,055 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:10,055 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:10,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,058 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) [2025-02-17 22:47:10,059 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 [2025-02-17 22:47:10,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:10,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:10,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:47:10,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,077 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) [2025-02-17 22:47:10,078 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 [2025-02-17 22:47:10,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:10,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:10,150 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:10,155 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 [2025-02-17 22:47:10,155 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:10,155 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:10,155 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:10,155 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:10,155 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:10,155 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,155 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:10,155 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:10,155 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:10,155 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:10,155 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:10,156 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:10,185 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:10,185 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:10,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,188 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) [2025-02-17 22:47:10,189 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 [2025-02-17 22:47:10,191 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 [2025-02-17 22:47:10,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:10,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:10,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:10,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:10,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:10,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:10,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:10,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:10,207 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:10,207 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:10,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,209 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) [2025-02-17 22:47:10,210 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 [2025-02-17 22:47:10,213 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:10,213 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:10,213 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:10,214 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-02-17 22:47:10,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:47:10,221 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:10,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:10,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:10,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:10,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:10,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:10,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:10,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:10,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:10,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:10,257 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:10,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:10,274 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:10,274 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 4472 transitions. cyclomatic complexity: 3713 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,364 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 [2025-02-17 22:47:10,388 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 4472 transitions. cyclomatic complexity: 3713. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 3144 states and 14622 transitions. Complement of second has 6 states. [2025-02-17 22:47:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-02-17 22:47:10,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:47:10,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:47:10,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:47:10,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3144 states and 14622 transitions. [2025-02-17 22:47:10,427 INFO L131 ngComponentsAnalysis]: Automaton has 207 accepting balls. 512 [2025-02-17 22:47:10,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3144 states to 2288 states and 10609 transitions. [2025-02-17 22:47:10,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 877 [2025-02-17 22:47:10,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1365 [2025-02-17 22:47:10,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2288 states and 10609 transitions. [2025-02-17 22:47:10,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:10,465 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2288 states and 10609 transitions. [2025-02-17 22:47:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states and 10609 transitions. [2025-02-17 22:47:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1800. [2025-02-17 22:47:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1800 states have (on average 4.822222222222222) internal successors, (8680), 1799 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 8680 transitions. [2025-02-17 22:47:10,526 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1800 states and 8680 transitions. [2025-02-17 22:47:10,526 INFO L432 stractBuchiCegarLoop]: Abstraction has 1800 states and 8680 transitions. [2025-02-17 22:47:10,526 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:47:10,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1800 states and 8680 transitions. [2025-02-17 22:47:10,538 INFO L131 ngComponentsAnalysis]: Automaton has 207 accepting balls. 512 [2025-02-17 22:47:10,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:10,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:10,539 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:47:10,539 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:10,540 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[69] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[92] L13-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[74] $Ultimate##0-->L37-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-02-17 22:47:10,540 INFO L754 eck$LassoCheckResult]: Loop: "[76] L37-1-->L39: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[78] L39-->L37-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-02-17 22:47:10,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 88608087, now seen corresponding path program 1 times [2025-02-17 22:47:10,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:10,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412922144] [2025-02-17 22:47:10,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:10,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:10,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:10,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:47:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412922144] [2025-02-17 22:47:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412922144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:47:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:47:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-17 22:47:10,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479993670] [2025-02-17 22:47:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:47:10,580 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:47:10,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 3395, now seen corresponding path program 1 times [2025-02-17 22:47:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:10,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854337158] [2025-02-17 22:47:10,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:10,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:10,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:10,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:10,601 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:10,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:10,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:10,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:10,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:10,630 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:10,630 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:10,630 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:10,630 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:10,630 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:10,630 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,630 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:10,630 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:10,631 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:10,631 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:10,631 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:10,631 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:10,648 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:10,649 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:10,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,652 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) [2025-02-17 22:47:10,653 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 [2025-02-17 22:47:10,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:10,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:10,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:10,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,673 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) [2025-02-17 22:47:10,674 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 [2025-02-17 22:47:10,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:10,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:10,744 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:10,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:47:10,748 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:10,748 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:10,748 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:10,748 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:10,748 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:10,748 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,749 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:10,749 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:10,749 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:10,749 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:10,749 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:10,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:10,767 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:10,767 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:10,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,770 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) [2025-02-17 22:47:10,771 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 [2025-02-17 22:47:10,772 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 [2025-02-17 22:47:10,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:10,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:10,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:10,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:10,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:10,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:10,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:10,785 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:10,786 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:10,786 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:10,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:10,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:10,788 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) [2025-02-17 22:47:10,789 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 [2025-02-17 22:47:10,790 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:10,790 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:10,790 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:10,790 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, x1) = -1*y + 1*x1 Supporting invariants [] [2025-02-17 22:47:10,795 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 [2025-02-17 22:47:10,796 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:10,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:10,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:10,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:10,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:10,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:10,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:10,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:10,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:10,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:10,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:10,826 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:10,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:10,844 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:10,845 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1800 states and 8680 transitions. cyclomatic complexity: 7262 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1800 states and 8680 transitions. cyclomatic complexity: 7262. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 6183 states and 29741 transitions. Complement of second has 7 states. [2025-02-17 22:47:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2025-02-17 22:47:10,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:47:10,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:47:10,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:47:10,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6183 states and 29741 transitions. [2025-02-17 22:47:11,050 INFO L131 ngComponentsAnalysis]: Automaton has 340 accepting balls. 778 [2025-02-17 22:47:11,059 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 [2025-02-17 22:47:11,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6183 states to 4514 states and 21595 transitions. [2025-02-17 22:47:11,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1616 [2025-02-17 22:47:11,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1978 [2025-02-17 22:47:11,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4514 states and 21595 transitions. [2025-02-17 22:47:11,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:11,113 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4514 states and 21595 transitions. [2025-02-17 22:47:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states and 21595 transitions. [2025-02-17 22:47:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 2967. [2025-02-17 22:47:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2967 states have (on average 5.050219076508258) internal successors, (14984), 2966 states have internal predecessors, (14984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 14984 transitions. [2025-02-17 22:47:11,251 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2967 states and 14984 transitions. [2025-02-17 22:47:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:47:11,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:47:11,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:47:11,255 INFO L87 Difference]: Start difference. First operand 2967 states and 14984 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:47:11,281 INFO L93 Difference]: Finished difference Result 853 states and 3746 transitions. [2025-02-17 22:47:11,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 853 states and 3746 transitions. [2025-02-17 22:47:11,289 INFO L131 ngComponentsAnalysis]: Automaton has 77 accepting balls. 154 [2025-02-17 22:47:11,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 853 states to 775 states and 3468 transitions. [2025-02-17 22:47:11,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 335 [2025-02-17 22:47:11,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 335 [2025-02-17 22:47:11,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 775 states and 3468 transitions. [2025-02-17 22:47:11,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:11,298 INFO L218 hiAutomatonCegarLoop]: Abstraction has 775 states and 3468 transitions. [2025-02-17 22:47:11,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states and 3468 transitions. [2025-02-17 22:47:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2025-02-17 22:47:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 775 states have (on average 4.474838709677419) internal successors, (3468), 774 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 3468 transitions. [2025-02-17 22:47:11,318 INFO L240 hiAutomatonCegarLoop]: Abstraction has 775 states and 3468 transitions. [2025-02-17 22:47:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:47:11,319 INFO L432 stractBuchiCegarLoop]: Abstraction has 775 states and 3468 transitions. [2025-02-17 22:47:11,319 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:47:11,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 775 states and 3468 transitions. [2025-02-17 22:47:11,324 INFO L131 ngComponentsAnalysis]: Automaton has 77 accepting balls. 154 [2025-02-17 22:47:11,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:11,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:11,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:47:11,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:11,325 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[92] L13-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[95] L14-->L46: 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]" "[98] L15-->L55: 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]" [2025-02-17 22:47:11,328 INFO L754 eck$LassoCheckResult]: Loop: "[84] L55-->L57: Formula: (< v_x3_1 v_w_3) InVars {w=v_w_3, x3=v_x3_1} OutVars{w=v_w_3, x3=v_x3_1} AuxVars[] AssignedVars[]" "[86] L57-->L55: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:47:11,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash 88630307, now seen corresponding path program 1 times [2025-02-17 22:47:11,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:11,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78251301] [2025-02-17 22:47:11,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:11,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:11,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:11,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:11,337 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:11,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:11,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:11,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:11,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:11,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash 3651, now seen corresponding path program 1 times [2025-02-17 22:47:11,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385010062] [2025-02-17 22:47:11,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:11,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:11,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:11,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:11,352 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:11,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:11,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:11,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:11,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:11,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash -725618203, now seen corresponding path program 1 times [2025-02-17 22:47:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:11,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205780836] [2025-02-17 22:47:11,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:11,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:47:11,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:47:11,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:11,363 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:11,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:47:11,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:47:11,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:11,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:11,388 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:11,388 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:11,388 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:11,388 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:11,388 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:11,388 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:11,388 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:11,388 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:11,388 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:11,388 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:11,388 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:11,389 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:11,406 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:11,406 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:11,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:11,408 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) [2025-02-17 22:47:11,410 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 [2025-02-17 22:47:11,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:11,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:11,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:11,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:11,431 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) [2025-02-17 22:47:11,433 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 [2025-02-17 22:47:11,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:11,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:11,503 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:11,507 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 [2025-02-17 22:47:11,507 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:11,507 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:11,508 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:11,508 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:11,508 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:11,508 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:11,508 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:11,508 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:11,508 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:11,508 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:11,508 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:11,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:11,526 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:11,526 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:11,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:11,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:11,528 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) [2025-02-17 22:47:11,529 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 [2025-02-17 22:47:11,530 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 [2025-02-17 22:47:11,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:11,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:11,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:11,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:11,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:11,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:11,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:11,543 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:11,546 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:11,546 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:11,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:11,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:11,549 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) [2025-02-17 22:47:11,551 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 [2025-02-17 22:47:11,552 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:11,552 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:11,552 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:11,552 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x3) = 1*w - 1*x3 Supporting invariants [] [2025-02-17 22:47:11,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:47:11,558 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:11,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:11,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:11,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:11,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:11,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:11,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:11,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:11,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:11,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:11,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:11,588 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:11,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:11,603 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:11,603 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 775 states and 3468 transitions. cyclomatic complexity: 2846 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:11,667 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 775 states and 3468 transitions. cyclomatic complexity: 2846. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2385 states and 10754 transitions. Complement of second has 6 states. [2025-02-17 22:47:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2025-02-17 22:47:11,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:47:11,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:11,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:47:11,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:11,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:47:11,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:11,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2385 states and 10754 transitions. [2025-02-17 22:47:11,693 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:11,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2385 states to 0 states and 0 transitions. [2025-02-17 22:47:11,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:47:11,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:47:11,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:47:11,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:47:11,694 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:11,694 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:11,694 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:11,694 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:47:11,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:47:11,694 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:11,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:47:11,701 INFO L201 PluginConnector]: Adding new model m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:47:11 BoogieIcfgContainer [2025-02-17 22:47:11,701 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:47:11,702 INFO L158 Benchmark]: Toolchain (without parser) took 3241.08ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 85.9MB in the beginning and 72.4MB in the end (delta: 13.5MB). Peak memory consumption was 85.3MB. Max. memory is 8.0GB. [2025-02-17 22:47:11,703 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.85ms. Allocated memory is still 159.4MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:11,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.98ms. Allocated memory is still 159.4MB. Free memory was 85.8MB in the beginning and 84.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:11,704 INFO L158 Benchmark]: Boogie Preprocessor took 10.09ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.9MB in the end (delta: 643.7kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:11,704 INFO L158 Benchmark]: RCFGBuilder took 169.93ms. Allocated memory is still 159.4MB. Free memory was 83.8MB in the beginning and 75.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:47:11,704 INFO L158 Benchmark]: BuchiAutomizer took 3037.65ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 74.9MB in the beginning and 72.4MB in the end (delta: 2.5MB). Peak memory consumption was 76.9MB. Max. memory is 8.0GB. [2025-02-17 22:47:11,705 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.85ms. Allocated memory is still 159.4MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.98ms. Allocated memory is still 159.4MB. Free memory was 85.8MB in the beginning and 84.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.09ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.9MB in the end (delta: 643.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 169.93ms. Allocated memory is still 159.4MB. Free memory was 83.8MB in the beginning and 75.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3037.65ms. Allocated memory was 159.4MB in the beginning and 226.5MB in the end (delta: 67.1MB). Free memory was 74.9MB in the beginning and 72.4MB in the end (delta: 2.5MB). Peak memory consumption was 76.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function w + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function x1 + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + w and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 2644 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 208 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 153 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:47:11,715 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 [2025-02-17 22:47:11,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...