/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 --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -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 22:51:38,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:51:38,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:51:38,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:51:38,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:51:38,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:51:38,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:51:38,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:51:38,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:51:38,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:51:38,724 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:51:38,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:51:38,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:51:38,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:51:38,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:51:38,725 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:51:38,725 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:51:38,726 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:51:38,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:51:38,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:51:38,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:51:38,951 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:51:38,952 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:51:38,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/m7.c.bpl [2025-02-17 22:51:38,953 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/m7.c.bpl' [2025-02-17 22:51:38,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:51:38,976 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:51:38,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:51:38,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:51:38,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:51:38,984 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 10:51:38" (1/1) ... [2025-02-17 22:51:38,989 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 10:51:38" (1/1) ... [2025-02-17 22:51:38,994 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:51:38,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:51:38,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:51:38,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:51:38,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:51:39,000 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,000 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,001 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,001 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,002 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,002 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,004 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,005 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,005 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 10:51:38" (1/1) ... [2025-02-17 22:51:39,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:51:39,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:51:39,006 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:51:39,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:51:39,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:51:38" (1/1) ... [2025-02-17 22:51:39,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:39,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:39,028 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 22:51:39,033 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 22:51:39,046 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:51:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:51:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:51:39,047 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:51:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:51:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:51:39,047 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:51:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:51:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:51:39,047 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:51:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:51:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:51:39,047 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:51:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:51:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:51:39,048 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 22:51:39,079 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:51:39,081 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:51:39,148 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:51:39,148 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:51:39,156 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:51:39,156 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:51:39,157 INFO L201 PluginConnector]: Adding new model m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:51:39 BoogieIcfgContainer [2025-02-17 22:51:39,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:51:39,159 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:51:39,159 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:51:39,163 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:51:39,163 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:51:39,163 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:51:38" (1/2) ... [2025-02-17 22:51:39,165 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@270cf238 and model type m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:51:39, skipping insertion in model container [2025-02-17 22:51:39,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:51:39,165 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 10:51:39" (2/2) ... [2025-02-17 22:51:39,166 INFO L363 chiAutomizerObserver]: Analyzing ICFG m7.c.bpl [2025-02-17 22:51:39,229 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:51:39,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 100 flow [2025-02-17 22:51:39,297 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-17 22:51:39,300 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:51:39,304 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 22:51:39,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 100 flow [2025-02-17 22:51:39,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 28 transitions, 80 flow [2025-02-17 22:51:39,313 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:51:39,762 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:51:39,762 INFO L101 AmpleReduction]: Number of pruned transitions: 547, Number of non-trivial ample sets: 872 [2025-02-17 22:51:39,762 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 731 [2025-02-17 22:51:39,770 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:51:39,771 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:51:39,771 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:51:39,771 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:51:39,771 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:51:39,771 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:51:39,771 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:51:39,771 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:51:39,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 570 states, 569 states have (on average 2.945518453427065) internal successors, (1676), 569 states have internal predecessors, (1676), 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 22:51:39,816 INFO L131 ngComponentsAnalysis]: Automaton has 120 accepting balls. 398 [2025-02-17 22:51:39,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:51:39,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:51:39,822 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:51:39,822 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:51:39,823 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:51:39,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 570 states, 569 states have (on average 2.945518453427065) internal successors, (1676), 569 states have internal predecessors, (1676), 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 22:51:39,836 INFO L131 ngComponentsAnalysis]: Automaton has 120 accepting balls. 398 [2025-02-17 22:51:39,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:51:39,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:51:39,836 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:51:39,836 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:51:39,843 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:51:39,843 INFO L754 eck$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 22:51:39,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2972, now seen corresponding path program 1 times [2025-02-17 22:51:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:39,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678602263] [2025-02-17 22:51:39,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:39,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:39,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:39,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:39,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:39,901 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:39,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:39,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:39,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:39,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:39,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:39,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash 3203, now seen corresponding path program 1 times [2025-02-17 22:51:39,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:39,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530040612] [2025-02-17 22:51:39,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:39,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:39,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:39,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:39,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:39,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:39,922 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:39,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:39,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:39,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:39,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:39,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:39,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2858334, now seen corresponding path program 1 times [2025-02-17 22:51:39,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:39,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134038532] [2025-02-17 22:51:39,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:39,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:39,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:51:39,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:51:39,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:39,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:39,932 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:39,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:51:39,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:51:39,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:39,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:39,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:39,962 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:39,962 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:39,963 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:39,963 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:39,963 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:51:39,963 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:39,963 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:39,963 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:39,963 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:51:39,963 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:39,963 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:39,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:40,010 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:40,011 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:51:40,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,017 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 22:51:40,018 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 22:51:40,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:51:40,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:40,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:51:40,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,043 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 22:51:40,045 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 22:51:40,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:51:40,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:40,120 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:51:40,124 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 22:51:40,124 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:40,125 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:40,125 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:40,125 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:40,125 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:51:40,125 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,125 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:40,125 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:40,125 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:51:40,125 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:40,125 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:40,126 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:40,153 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:40,156 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:51:40,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,190 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 22:51:40,192 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 22:51:40,193 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 22:51:40,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:51:40,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:51:40,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:51:40,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:51:40,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:51:40,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:51:40,209 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:51:40,214 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:51:40,220 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:51:40,220 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:51:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,224 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 22:51:40,225 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 22:51:40,227 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:51:40,227 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:51:40,227 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:51:40,228 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:51:40,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:51:40,237 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:51:40,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:40,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:40,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:40,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:40,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:51:40,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:40,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:40,296 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 22:51:40,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:40,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:40,297 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:51:40,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:40,317 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 22:51:40,347 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 22:51:40,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 570 states, 569 states have (on average 2.945518453427065) internal successors, (1676), 569 states have internal predecessors, (1676), 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) 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 22:51:40,532 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 570 states, 569 states have (on average 2.945518453427065) internal successors, (1676), 569 states have internal predecessors, (1676), 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). 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 1995 states and 6228 transitions. Complement of second has 7 states. [2025-02-17 22:51:40,534 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 22:51:40,537 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 22:51:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-02-17 22:51:40,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:51:40,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:40,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:51:40,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:40,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:51:40,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:40,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1995 states and 6228 transitions. [2025-02-17 22:51:40,579 INFO L131 ngComponentsAnalysis]: Automaton has 244 accepting balls. 676 [2025-02-17 22:51:40,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1995 states to 1494 states and 4841 transitions. [2025-02-17 22:51:40,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 963 [2025-02-17 22:51:40,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1217 [2025-02-17 22:51:40,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1494 states and 4841 transitions. [2025-02-17 22:51:40,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:51:40,619 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1494 states and 4841 transitions. [2025-02-17 22:51:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states and 4841 transitions. [2025-02-17 22:51:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 958. [2025-02-17 22:51:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 958 states have (on average 3.5) internal successors, (3353), 957 states have internal predecessors, (3353), 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 22:51:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3353 transitions. [2025-02-17 22:51:40,709 INFO L240 hiAutomatonCegarLoop]: Abstraction has 958 states and 3353 transitions. [2025-02-17 22:51:40,709 INFO L432 stractBuchiCegarLoop]: Abstraction has 958 states and 3353 transitions. [2025-02-17 22:51:40,709 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:51:40,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 958 states and 3353 transitions. [2025-02-17 22:51:40,716 INFO L131 ngComponentsAnalysis]: Automaton has 170 accepting balls. 502 [2025-02-17 22:51:40,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:51:40,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:51:40,717 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:51:40,717 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:51:40,718 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[70] L26-->L28: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[92] L13-1-->$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 22:51:40,718 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 22:51:40,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash 88609069, now seen corresponding path program 1 times [2025-02-17 22:51:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:40,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106739976] [2025-02-17 22:51:40,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:40,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:51:40,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:51:40,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:40,727 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:40,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:51:40,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:51:40,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:40,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:40,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 3523, now seen corresponding path program 1 times [2025-02-17 22:51:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883236851] [2025-02-17 22:51:40,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:40,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:40,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:40,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:40,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:40,737 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:40,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:40,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:40,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:40,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:40,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -746028049, now seen corresponding path program 1 times [2025-02-17 22:51:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002683510] [2025-02-17 22:51:40,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:40,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:51:40,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:51:40,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:40,752 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:40,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:51:40,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:51:40,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:40,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:40,776 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:40,776 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:40,776 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:40,776 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:40,776 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:51:40,777 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,777 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:40,777 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:40,777 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:51:40,777 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:40,777 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:40,777 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:40,795 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:40,795 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:51:40,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,799 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 22:51:40,800 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 22:51:40,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:51:40,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:40,820 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 22:51:40,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,823 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 22:51:40,824 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 22:51:40,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:51:40,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:40,898 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:51:40,902 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 22:51:40,902 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:40,902 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:40,903 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:40,903 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:40,903 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:51:40,903 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,903 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:40,903 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:40,903 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:51:40,903 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:40,903 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:40,903 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:40,923 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:40,923 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:51:40,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,926 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 22:51:40,927 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 22:51:40,928 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 22:51:40,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:51:40,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:51:40,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:51:40,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:51:40,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:51:40,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:51:40,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:51:40,941 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:51:40,943 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:51:40,943 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:51:40,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:40,945 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 22:51:40,946 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 22:51:40,947 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:51:40,947 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:51:40,947 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:51:40,947 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-02-17 22:51:40,952 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 22:51:40,953 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:51:40,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:40,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:51:40,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:51:40,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:40,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:51:40,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:40,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:40,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:40,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:40,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:40,978 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:51:40,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:40,990 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 22:51:40,991 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 22:51:40,991 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 958 states and 3353 transitions. cyclomatic complexity: 2611 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 22:51:41,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 958 states and 3353 transitions. cyclomatic complexity: 2611. 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 2736 states and 10340 transitions. Complement of second has 6 states. [2025-02-17 22:51:41,064 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 22:51:41,064 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 22:51:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-02-17 22:51:41,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:51:41,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:41,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:51:41,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:41,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:51:41,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:41,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2736 states and 10340 transitions. [2025-02-17 22:51:41,092 INFO L131 ngComponentsAnalysis]: Automaton has 153 accepting balls. 384 [2025-02-17 22:51:41,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2736 states to 1965 states and 7518 transitions. [2025-02-17 22:51:41,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 753 [2025-02-17 22:51:41,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1131 [2025-02-17 22:51:41,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1965 states and 7518 transitions. [2025-02-17 22:51:41,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:51:41,143 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1965 states and 7518 transitions. [2025-02-17 22:51:41,144 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 22:51:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states and 7518 transitions. [2025-02-17 22:51:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1595. [2025-02-17 22:51:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1595 states have (on average 3.94858934169279) internal successors, (6298), 1594 states have internal predecessors, (6298), 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 22:51:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 6298 transitions. [2025-02-17 22:51:41,202 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1595 states and 6298 transitions. [2025-02-17 22:51:41,202 INFO L432 stractBuchiCegarLoop]: Abstraction has 1595 states and 6298 transitions. [2025-02-17 22:51:41,202 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:51:41,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1595 states and 6298 transitions. [2025-02-17 22:51:41,212 INFO L131 ngComponentsAnalysis]: Automaton has 153 accepting balls. 384 [2025-02-17 22:51:41,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:51:41,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:51:41,213 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:51:41,213 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:51:41,213 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]" "[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[]" "[71] L30-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[74] $Ultimate##0-->L37-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-02-17 22:51:41,213 INFO L754 eck$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 22:51:41,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1547453528, now seen corresponding path program 1 times [2025-02-17 22:51:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:41,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255356560] [2025-02-17 22:51:41,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:41,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:41,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:51:41,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:51:41,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,220 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:41,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:51:41,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:51:41,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:41,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash 3395, now seen corresponding path program 1 times [2025-02-17 22:51:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206111937] [2025-02-17 22:51:41,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:41,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:41,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:41,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:41,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,232 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:41,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:41,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:41,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:41,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1044153558, now seen corresponding path program 1 times [2025-02-17 22:51:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613621729] [2025-02-17 22:51:41,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:41,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:51:41,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:51:41,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,243 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:41,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:51:41,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:51:41,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:41,260 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:41,260 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:41,260 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:41,260 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:41,260 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:51:41,260 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,260 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:41,260 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:41,260 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:51:41,260 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:41,260 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:41,261 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:41,278 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:41,278 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:51:41,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:41,280 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 22:51:41,282 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 22:51:41,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:51:41,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:41,302 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 22:51:41,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:41,304 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 22:51:41,305 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 22:51:41,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:51:41,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:41,386 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:51:41,392 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 22:51:41,392 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:41,392 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:41,392 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:41,392 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:41,393 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:51:41,393 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,393 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:41,393 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:41,393 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:51:41,393 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:41,393 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:41,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:41,410 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:41,410 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:51:41,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:41,412 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 22:51:41,415 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 22:51:41,415 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 22:51:41,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:51:41,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:51:41,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:51:41,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:51:41,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:51:41,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:51:41,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:51:41,429 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:51:41,432 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:51:41,432 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:51:41,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:41,440 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 22:51:41,443 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 22:51:41,447 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:51:41,447 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:51:41,447 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:51:41,447 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, y) = 1*x1 - 1*y Supporting invariants [] [2025-02-17 22:51:41,455 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 22:51:41,456 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:51:41,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:41,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:51:41,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:51:41,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:41,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:51:41,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:41,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:41,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:41,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:41,488 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:51:41,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:41,498 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 22:51:41,499 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 22:51:41,499 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1595 states and 6298 transitions. cyclomatic complexity: 4990 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:51:41,621 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1595 states and 6298 transitions. cyclomatic complexity: 4990. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 5424 states and 21707 transitions. Complement of second has 7 states. [2025-02-17 22:51:41,622 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 22:51:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:51:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-02-17 22:51:41,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:51:41,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:41,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:51:41,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:41,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:51:41,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:41,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5424 states and 21707 transitions. [2025-02-17 22:51:41,681 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 22:51:41,725 INFO L131 ngComponentsAnalysis]: Automaton has 261 accepting balls. 600 [2025-02-17 22:51:41,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5424 states to 3976 states and 15860 transitions. [2025-02-17 22:51:41,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1416 [2025-02-17 22:51:41,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1684 [2025-02-17 22:51:41,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3976 states and 15860 transitions. [2025-02-17 22:51:41,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:51:41,773 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3976 states and 15860 transitions. [2025-02-17 22:51:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states and 15860 transitions. [2025-02-17 22:51:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 2642. [2025-02-17 22:51:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2642 states have (on average 4.17108251324754) internal successors, (11020), 2641 states have internal predecessors, (11020), 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 22:51:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 11020 transitions. [2025-02-17 22:51:41,853 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2642 states and 11020 transitions. [2025-02-17 22:51:41,853 INFO L432 stractBuchiCegarLoop]: Abstraction has 2642 states and 11020 transitions. [2025-02-17 22:51:41,853 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:51:41,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2642 states and 11020 transitions. [2025-02-17 22:51:41,901 INFO L131 ngComponentsAnalysis]: Automaton has 207 accepting balls. 492 [2025-02-17 22:51:41,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:51:41,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:51:41,902 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:51:41,902 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:51:41,903 INFO L752 eck$LassoCheckResult]: Stem: "[62] $Ultimate##0-->L13: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[89] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[70] L26-->L28: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[92] L13-1-->$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] $Ultimate##0-->L37-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[95] L14-->L46: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[98] L15-->L55: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:51:41,903 INFO L754 eck$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 22:51:41,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash -746047749, now seen corresponding path program 1 times [2025-02-17 22:51:41,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:41,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718324720] [2025-02-17 22:51:41,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:41,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:51:41,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:51:41,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:41,956 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 22:51:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:51:41,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718324720] [2025-02-17 22:51:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718324720] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:51:41,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:51:41,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:51:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606793776] [2025-02-17 22:51:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:51:41,960 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:51:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash 3651, now seen corresponding path program 1 times [2025-02-17 22:51:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551770547] [2025-02-17 22:51:41,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:41,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:41,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:41,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,964 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:41,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:41,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:41,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:41,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:41,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:41,981 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:41,981 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:41,981 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:41,981 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:41,981 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:51:41,981 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:41,981 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:41,981 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:41,981 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:51:41,981 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:41,981 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:41,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:42,002 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:42,002 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:51:42,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:42,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:42,004 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 22:51:42,005 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 22:51:42,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:51:42,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:42,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:51:42,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:42,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:42,025 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 22:51:42,026 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 22:51:42,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:51:42,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:42,093 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:51:42,098 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 22:51:42,098 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:42,098 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:42,098 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:42,098 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:42,098 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:51:42,098 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:42,098 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:42,098 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:42,098 INFO L132 ssoRankerPreferences]: Filename of dumped script: m7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:51:42,098 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:42,098 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:42,099 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:42,115 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:42,115 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:51:42,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:42,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:42,117 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 22:51:42,119 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 22:51:42,120 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 22:51:42,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:51:42,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:51:42,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:51:42,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:51:42,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:51:42,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:51:42,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:51:42,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:51:42,136 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:51:42,136 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:51:42,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:42,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:42,138 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 22:51:42,139 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 22:51:42,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:51:42,141 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:51:42,141 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:51:42,141 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x3) = 1*w - 1*x3 Supporting invariants [] [2025-02-17 22:51:42,147 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 22:51:42,147 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:51:42,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:42,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:51:42,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:51:42,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:42,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:42,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:51:42,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:42,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:42,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:42,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:42,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:42,183 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:51:42,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:42,196 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 22:51:42,197 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 22:51:42,197 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2642 states and 11020 transitions. cyclomatic complexity: 8824 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:51:42,313 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2642 states and 11020 transitions. cyclomatic complexity: 8824. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 7580 states and 33421 transitions. Complement of second has 6 states. [2025-02-17 22:51:42,313 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 22:51:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:51:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2025-02-17 22:51:42,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:51:42,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:42,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-17 22:51:42,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:42,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 73 transitions. Stem has 7 letters. Loop has 4 letters. [2025-02-17 22:51:42,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:42,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7580 states and 33421 transitions. [2025-02-17 22:51:42,394 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 262 [2025-02-17 22:51:42,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7580 states to 3576 states and 15590 transitions. [2025-02-17 22:51:42,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1010 [2025-02-17 22:51:42,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1288 [2025-02-17 22:51:42,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3576 states and 15590 transitions. [2025-02-17 22:51:42,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:51:42,437 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3576 states and 15590 transitions. [2025-02-17 22:51:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states and 15590 transitions. [2025-02-17 22:51:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 2962. [2025-02-17 22:51:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 2962 states have (on average 4.50371370695476) internal successors, (13340), 2961 states have internal predecessors, (13340), 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 22:51:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 13340 transitions. [2025-02-17 22:51:42,514 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2962 states and 13340 transitions. [2025-02-17 22:51:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:51:42,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:51:42,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:51:42,517 INFO L87 Difference]: Start difference. First operand 2962 states and 13340 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 22:51:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:51:42,527 INFO L93 Difference]: Finished difference Result 287 states and 854 transitions. [2025-02-17 22:51:42,527 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 287 states and 854 transitions. [2025-02-17 22:51:42,528 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:51:42,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 287 states to 0 states and 0 transitions. [2025-02-17 22:51:42,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:51:42,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:51:42,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:51:42,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:51:42,529 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:51:42,529 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:51:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:51:42,529 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:51:42,530 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:51:42,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:51:42,530 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:51:42,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:51:42,539 INFO L201 PluginConnector]: Adding new model m7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:51:42 BoogieIcfgContainer [2025-02-17 22:51:42,539 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:51:42,540 INFO L158 Benchmark]: Toolchain (without parser) took 3563.50ms. Allocated memory was 159.4MB in the beginning and 260.0MB in the end (delta: 100.7MB). Free memory was 86.7MB in the beginning and 65.1MB in the end (delta: 21.6MB). Peak memory consumption was 123.7MB. Max. memory is 8.0GB. [2025-02-17 22:51:42,540 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:51:42,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.88ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 85.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:51:42,540 INFO L158 Benchmark]: Boogie Preprocessor took 10.21ms. Allocated memory is still 159.4MB. Free memory was 85.5MB in the beginning and 84.7MB in the end (delta: 776.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:51:42,543 INFO L158 Benchmark]: RCFGBuilder took 150.75ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 75.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:51:42,544 INFO L158 Benchmark]: BuchiAutomizer took 3380.52ms. Allocated memory was 159.4MB in the beginning and 260.0MB in the end (delta: 100.7MB). Free memory was 75.7MB in the beginning and 65.1MB in the end (delta: 10.5MB). Peak memory consumption was 115.4MB. Max. memory is 8.0GB. [2025-02-17 22:51:42,544 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 0.14ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.88ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 85.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.21ms. Allocated memory is still 159.4MB. Free memory was 85.5MB in the beginning and 84.7MB in the end (delta: 776.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 150.75ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 75.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3380.52ms. Allocated memory was 159.4MB in the beginning and 260.0MB in the end (delta: 100.7MB). Free memory was 75.7MB in the beginning and 65.1MB in the end (delta: 10.5MB). Peak memory consumption was 115.4MB. 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 3.2s 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, 2854 StatesRemovedByMinimization, 4 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, 216 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 168 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 136 mSDtfsCounter, 168 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: 70ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.5s InitialAbstraction: Time to compute Ample Reduction [ms]: 509, Trivial Ample Sets caused by loops: 731, Number of non-trivial ample sets: 872, Number of pruned transitions: 547, Number of transitions in reduction automaton: 1676, Number of states in reduction automaton: 570, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:51:42,553 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 22:51:42,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...