/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/indep_loops_minus1_7.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:49:49,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:49:49,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:49:49,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:49:49,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:49:49,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:49:49,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:49:49,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:49:49,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:49:49,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:49:49,444 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:49:49,444 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:49:49,444 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:49:49,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:49:49,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:49:49,446 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:49:49,446 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:49:49,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:49:49,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:49:49,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:49:49,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:49:49,447 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:49:49,447 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 22:49:49,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:49:49,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:49:49,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:49:49,677 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:49:49,678 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:49:49,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_7.c.bpl [2025-02-17 22:49:49,679 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_7.c.bpl' [2025-02-17 22:49:49,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:49:49,694 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:49:49,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:49,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:49:49,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:49:49,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,711 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:49:49,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:49,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:49:49,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:49:49,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:49:49,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,719 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:49:49,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:49:49,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:49:49,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:49:49,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/1) ... [2025-02-17 22:49:49,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:49,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:49,747 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 22:49:49,750 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 22:49:49,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:49:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:49:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:49:49,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:49:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:49:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:49:49,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:49:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:49:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:49:49,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:49:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:49:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:49:49,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:49:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:49:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:49:49,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:49:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:49:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:49:49,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-02-17 22:49:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-17 22:49:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-17 22:49:49,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-02-17 22:49:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-02-17 22:49:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-02-17 22:49:49,772 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 22:49:49,806 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:49:49,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:49:49,888 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:49:49,888 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:49:49,897 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:49:49,897 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:49:49,897 INFO L201 PluginConnector]: Adding new model indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:49 BoogieIcfgContainer [2025-02-17 22:49:49,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:49:49,898 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:49:49,898 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:49:49,902 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:49:49,903 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:49,903 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:49" (1/2) ... [2025-02-17 22:49:49,904 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a96b8b7 and model type indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:49:49, skipping insertion in model container [2025-02-17 22:49:49,904 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:49,904 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:49" (2/2) ... [2025-02-17 22:49:49,905 INFO L363 chiAutomizerObserver]: Analyzing ICFG indep_loops_minus1_7.c.bpl [2025-02-17 22:49:49,976 INFO L143 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2025-02-17 22:49:50,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 58 transitions, 165 flow [2025-02-17 22:49:50,041 INFO L124 PetriNetUnfolderBase]: 7/44 cut-off events. [2025-02-17 22:49:50,042 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-17 22:49:50,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 44 events. 7/44 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-02-17 22:49:50,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 58 transitions, 165 flow [2025-02-17 22:49:50,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 44 transitions, 130 flow [2025-02-17 22:49:50,057 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:50:00,105 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:50:00,105 INFO L101 AmpleReduction]: Number of pruned transitions: 17680, Number of non-trivial ample sets: 110922 [2025-02-17 22:50:00,105 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 103677 [2025-02-17 22:50:00,138 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:50:00,138 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:50:00,138 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:50:00,138 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:50:00,138 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:50:00,138 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:50:00,139 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:50:00,139 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:50:00,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 33777 states, 33776 states have (on average 6.35691023211748) internal successors, (214711), 33776 states have internal predecessors, (214711), 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 22:50:01,128 INFO L131 ngComponentsAnalysis]: Automaton has 3940 accepting balls. 33147 [2025-02-17 22:50:01,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:01,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:01,136 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:50:01,136 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:50:01,136 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:50:01,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 33777 states, 33776 states have (on average 6.35691023211748) internal successors, (214711), 33776 states have internal predecessors, (214711), 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 22:50:01,895 INFO L131 ngComponentsAnalysis]: Automaton has 3940 accepting balls. 33147 [2025-02-17 22:50:01,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:01,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:01,897 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:50:01,897 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:50:01,901 INFO L752 eck$LassoCheckResult]: Stem: "[140] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:50:01,902 INFO L754 eck$LassoCheckResult]: Loop: "[110] L32-->L34: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[112] L34-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:50:01,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash 171, now seen corresponding path program 1 times [2025-02-17 22:50:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:01,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703177119] [2025-02-17 22:50:01,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:01,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:50:01,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:50:01,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:01,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:01,962 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:01,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:50:01,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:50:01,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:01,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:01,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:01,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 4483, now seen corresponding path program 1 times [2025-02-17 22:50:01,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:01,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036328805] [2025-02-17 22:50:01,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:01,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:01,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:01,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:01,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:01,994 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:01,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:01,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:01,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:01,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:02,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:02,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 167853, now seen corresponding path program 1 times [2025-02-17 22:50:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763376111] [2025-02-17 22:50:02,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:02,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:02,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:02,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:02,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:02,011 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:02,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:02,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:02,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:02,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:02,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:02,055 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:02,056 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:02,056 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:02,056 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:02,056 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:02,056 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:02,056 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:02,056 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:02,056 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:50:02,057 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:02,057 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:02,244 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:02,310 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:02,315 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:02,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:02,327 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 22:50:02,332 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 22:50:02,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:02,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:02,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:02,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:02,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:02,370 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 22:50:02,371 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 22:50:02,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:02,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:02,450 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:02,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:02,455 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:02,455 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:02,455 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:02,455 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:02,456 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:02,456 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:02,456 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:02,456 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:02,456 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:50:02,456 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:02,456 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:02,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:02,501 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:02,517 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:02,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:02,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:02,537 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 22:50:02,555 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 22:50:02,556 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 22:50:02,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:02,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:02,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:02,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:02,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:02,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:02,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:02,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:02,613 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:50:02,613 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:50:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:02,630 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 22:50:02,631 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 22:50:02,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:02,636 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:02,637 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:02,637 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:50:02,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:02,662 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:02,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:02,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:50:02,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:50:02,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:02,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:02,696 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:02,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:02,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:02,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:02,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:02,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:02,711 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:02,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:02,742 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 22:50:02,767 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 22:50:02,856 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 33777 states, 33776 states have (on average 6.35691023211748) internal successors, (214711), 33776 states have internal predecessors, (214711), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 22:50:03,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:50:05,103 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 33777 states, 33776 states have (on average 6.35691023211748) internal successors, (214711), 33776 states have internal predecessors, (214711), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 94513 states and 659510 transitions. Complement of second has 6 states. [2025-02-17 22:50:05,105 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 22:50:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 22:50:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-02-17 22:50:05,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 1 letters. Loop has 2 letters. [2025-02-17 22:50:05,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:05,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:50:05,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:05,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 1 letters. Loop has 4 letters. [2025-02-17 22:50:05,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:05,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94513 states and 659510 transitions. [2025-02-17 22:50:07,632 INFO L131 ngComponentsAnalysis]: Automaton has 4549 accepting balls. 31781 [2025-02-17 22:50:09,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94513 states to 71688 states and 511885 transitions. [2025-02-17 22:50:09,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32510 [2025-02-17 22:50:09,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51658 [2025-02-17 22:50:09,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71688 states and 511885 transitions. [2025-02-17 22:50:09,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:09,941 INFO L218 hiAutomatonCegarLoop]: Abstraction has 71688 states and 511885 transitions. [2025-02-17 22:50:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71688 states and 511885 transitions. [2025-02-17 22:50:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71688 to 52541. [2025-02-17 22:50:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52541 states, 52541 states have (on average 7.37146228659523) internal successors, (387304), 52540 states have internal predecessors, (387304), 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 22:50:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52541 states to 52541 states and 387304 transitions. [2025-02-17 22:50:13,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52541 states and 387304 transitions. [2025-02-17 22:50:13,804 INFO L432 stractBuchiCegarLoop]: Abstraction has 52541 states and 387304 transitions. [2025-02-17 22:50:13,804 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:50:13,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52541 states and 387304 transitions. [2025-02-17 22:50:14,343 INFO L131 ngComponentsAnalysis]: Automaton has 4549 accepting balls. 31781 [2025-02-17 22:50:14,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:14,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:14,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:50:14,346 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:50:14,347 INFO L752 eck$LassoCheckResult]: Stem: "[140] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[109] L32-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[111] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[143] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:50:14,347 INFO L754 eck$LassoCheckResult]: Loop: "[114] L41-->L43: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[116] L43-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:50:14,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 5202594, now seen corresponding path program 1 times [2025-02-17 22:50:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:14,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792614662] [2025-02-17 22:50:14,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:14,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:14,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:50:14,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:50:14,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:14,352 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:14,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:50:14,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:50:14,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:14,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:14,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash 4611, now seen corresponding path program 1 times [2025-02-17 22:50:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929963361] [2025-02-17 22:50:14,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:14,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:14,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:14,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:14,359 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:14,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:14,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:14,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:14,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:14,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash 704729188, now seen corresponding path program 1 times [2025-02-17 22:50:14,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842518730] [2025-02-17 22:50:14,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:14,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:50:14,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:50:14,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:14,366 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:14,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:50:14,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:50:14,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:14,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:14,385 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:14,386 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:14,386 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:14,386 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:14,386 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:14,386 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:14,386 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:14,386 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:14,386 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:50:14,386 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:14,386 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:14,386 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:14,403 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:14,403 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:14,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:14,406 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 22:50:14,408 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 22:50:14,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:14,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:14,428 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 22:50:14,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:14,433 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 22:50:14,434 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 22:50:14,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:14,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:14,502 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:14,505 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 22:50:14,506 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:14,506 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:14,506 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:14,506 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:14,506 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:14,506 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:14,506 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:14,506 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:14,506 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:50:14,506 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:14,506 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:14,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:14,525 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:14,525 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:14,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:14,527 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 22:50:14,529 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 22:50:14,529 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 22:50:14,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:14,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:14,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:14,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:14,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:14,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:14,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:14,542 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:14,550 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:50:14,551 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:50:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:14,554 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 22:50:14,554 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 22:50:14,555 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:14,556 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:14,556 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:14,556 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-02-17 22:50:14,561 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 22:50:14,562 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:14,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:14,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:50:14,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:50:14,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:14,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:14,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:14,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:14,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:14,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:14,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:14,591 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:14,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:14,608 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 22:50:14,608 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 22:50:14,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52541 states and 387304 transitions. cyclomatic complexity: 340341 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:14,889 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 22:50:18,217 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52541 states and 387304 transitions. cyclomatic complexity: 340341. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 159784 states and 1218752 transitions. Complement of second has 6 states. [2025-02-17 22:50:18,217 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 22:50:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-17 22:50:18,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 110 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:50:18,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:18,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 110 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:50:18,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:18,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 110 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:50:18,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:18,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159784 states and 1218752 transitions. [2025-02-17 22:50:22,552 INFO L131 ngComponentsAnalysis]: Automaton has 5349 accepting balls. 30211 [2025-02-17 22:50:25,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159784 states to 121919 states and 941011 transitions. [2025-02-17 22:50:25,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43412 [2025-02-17 22:50:26,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65860 [2025-02-17 22:50:26,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121919 states and 941011 transitions. [2025-02-17 22:50:26,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:26,006 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121919 states and 941011 transitions. [2025-02-17 22:50:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121919 states and 941011 transitions. [2025-02-17 22:50:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121919 to 99471. [2025-02-17 22:50:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99471 states, 99471 states have (on average 8.034361773783314) internal successors, (799186), 99470 states have internal predecessors, (799186), 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 22:50:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99471 states to 99471 states and 799186 transitions. [2025-02-17 22:50:31,638 INFO L240 hiAutomatonCegarLoop]: Abstraction has 99471 states and 799186 transitions. [2025-02-17 22:50:31,638 INFO L432 stractBuchiCegarLoop]: Abstraction has 99471 states and 799186 transitions. [2025-02-17 22:50:31,638 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:50:31,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99471 states and 799186 transitions. [2025-02-17 22:50:33,030 INFO L131 ngComponentsAnalysis]: Automaton has 5349 accepting balls. 30211 [2025-02-17 22:50:33,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:33,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:33,035 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:50:33,035 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:50:33,036 INFO L752 eck$LassoCheckResult]: Stem: "[140] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[110] L32-->L34: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[143] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[112] L34-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[146] L14-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:50:33,036 INFO L754 eck$LassoCheckResult]: Loop: "[118] L50-->L52: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[120] L52-->L50: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:50:33,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:33,036 INFO L85 PathProgramCache]: Analyzing trace with hash 161340142, now seen corresponding path program 1 times [2025-02-17 22:50:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649661136] [2025-02-17 22:50:33,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:33,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:33,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:33,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:33,048 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:33,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:33,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:33,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:33,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:33,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash 4739, now seen corresponding path program 1 times [2025-02-17 22:50:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:33,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558962825] [2025-02-17 22:50:33,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:33,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:33,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:33,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:33,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:33,068 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:33,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:33,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:33,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:33,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:33,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash 429057584, now seen corresponding path program 1 times [2025-02-17 22:50:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:33,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618681118] [2025-02-17 22:50:33,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:33,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:50:33,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:50:33,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:33,090 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:33,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:50:33,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:50:33,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:33,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:33,134 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:33,134 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:33,134 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:33,134 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:33,134 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:33,134 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:33,134 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:33,134 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:33,134 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:50:33,134 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:33,134 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:33,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:33,170 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:33,170 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:33,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:33,173 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 22:50:33,174 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 22:50:33,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:33,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:33,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:50:33,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:33,209 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 22:50:33,211 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 22:50:33,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:33,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:33,281 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:33,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:33,285 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:33,285 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:33,285 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:33,285 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:33,285 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:33,285 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:33,285 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:33,285 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:33,285 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:50:33,285 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:33,285 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:33,286 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:33,318 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:33,318 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:33,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:33,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:33,320 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 22:50:33,325 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 22:50:33,326 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 22:50:33,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:33,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:33,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:33,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:33,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:33,338 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:33,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:33,340 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:33,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:50:33,350 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:50:33,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:33,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:33,357 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 22:50:33,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:33,359 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:33,359 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:33,359 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:50:33,363 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 22:50:33,372 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 22:50:33,373 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:33,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:33,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:33,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:33,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:33,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:33,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:33,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:33,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:33,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:33,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:33,423 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:33,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:33,441 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 22:50:33,441 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 22:50:33,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99471 states and 799186 transitions. cyclomatic complexity: 708247 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 22:50:34,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:40,416 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99471 states and 799186 transitions. cyclomatic complexity: 708247. 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 308925 states and 2533944 transitions. Complement of second has 6 states. [2025-02-17 22:50:40,416 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 22:50:40,417 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 22:50:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-02-17 22:50:40,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:50:40,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:40,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:50:40,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:40,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:50:40,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:40,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 308925 states and 2533944 transitions. [2025-02-17 22:50:49,276 INFO L131 ngComponentsAnalysis]: Automaton has 6306 accepting balls. 28710 [2025-02-17 22:50:55,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 308925 states to 229100 states and 1900458 transitions. [2025-02-17 22:50:55,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65582 [2025-02-17 22:50:55,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87845 [2025-02-17 22:50:55,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229100 states and 1900458 transitions. [2025-02-17 22:50:55,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:55,619 INFO L218 hiAutomatonCegarLoop]: Abstraction has 229100 states and 1900458 transitions. [2025-02-17 22:50:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229100 states and 1900458 transitions. [2025-02-17 22:51:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229100 to 194528. [2025-02-17 22:51:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194528 states, 194528 states have (on average 8.570056752755388) internal successors, (1667116), 194527 states have internal predecessors, (1667116), 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 22:51:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194528 states to 194528 states and 1667116 transitions. [2025-02-17 22:51:07,418 INFO L240 hiAutomatonCegarLoop]: Abstraction has 194528 states and 1667116 transitions. [2025-02-17 22:51:07,418 INFO L432 stractBuchiCegarLoop]: Abstraction has 194528 states and 1667116 transitions. [2025-02-17 22:51:07,420 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:51:07,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 194528 states and 1667116 transitions. [2025-02-17 22:51:10,491 INFO L131 ngComponentsAnalysis]: Automaton has 6306 accepting balls. 28710 [2025-02-17 22:51:10,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:51:10,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:51:10,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:51:10,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:51:10,496 INFO L752 eck$LassoCheckResult]: Stem: "[140] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[110] L32-->L34: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[143] L13-->L41: 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]" "[112] L34-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[146] L14-->L50: 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]" "[149] L15-->L59: 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 22:51:10,496 INFO L754 eck$LassoCheckResult]: Loop: "[122] L59-->L61: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[124] L61-->L59: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:51:10,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 706577255, now seen corresponding path program 1 times [2025-02-17 22:51:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221674903] [2025-02-17 22:51:10,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:10,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:51:10,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:51:10,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:10,501 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:10,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:51:10,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:51:10,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:10,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:10,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 4867, now seen corresponding path program 1 times [2025-02-17 22:51:10,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807476795] [2025-02-17 22:51:10,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:10,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:10,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:10,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:10,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:10,507 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:10,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:10,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:10,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:10,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:10,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash 415913193, now seen corresponding path program 1 times [2025-02-17 22:51:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:51:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424778478] [2025-02-17 22:51:10,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:51:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:51:10,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:51:10,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:51:10,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:10,514 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:51:10,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:51:10,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:51:10,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:51:10,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:51:10,533 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:10,533 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:10,533 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:10,533 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:10,533 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:51:10,533 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:10,534 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:10,534 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:10,534 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:51:10,534 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:10,534 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:10,534 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:10,551 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:10,551 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:51:10,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:10,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:10,553 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 22:51:10,555 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 22:51:10,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:51:10,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:10,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:51:10,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:10,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:10,576 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 22:51:10,577 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 22:51:10,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:51:10,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:51:10,642 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:51:10,646 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 22:51:10,647 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:51:10,647 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:51:10,647 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:51:10,647 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:51:10,647 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:51:10,647 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:10,647 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:51:10,647 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:51:10,647 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:51:10,647 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:51:10,647 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:51:10,647 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:51:10,670 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:51:10,671 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:51:10,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:10,674 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 22:51:10,677 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 22:51:10,677 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 22:51:10,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:51:10,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:51:10,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:51:10,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:51:10,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:51:10,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:51:10,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:51:10,697 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:51:10,704 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:51:10,704 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:51:10,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:51:10,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:51:10,708 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 22:51:10,709 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 22:51:10,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:51:10,710 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:51:10,710 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:51:10,710 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:51:10,715 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 22:51:10,716 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:51:10,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:51:10,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:51:10,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:51:10,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:10,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:51:10,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:10,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:51:10,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:51:10,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:51:10,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:51:10,748 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:51:10,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:51:10,762 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 22:51:10,763 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 22:51:10,763 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194528 states and 1667116 transitions. cyclomatic complexity: 1486355 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 22:51:11,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:51:24,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194528 states and 1667116 transitions. cyclomatic complexity: 1486355. 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 576969 states and 4990875 transitions. Complement of second has 6 states. [2025-02-17 22:51:24,423 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 22:51:24,424 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 22:51:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-02-17 22:51:24,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:51:24,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:24,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:51:24,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:24,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:51:24,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:24,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 576969 states and 4990875 transitions.