/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/barrier-4t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:50,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:50,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:50,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:50,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:50,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:50,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:50,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:50,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:50,610 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:50,611 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:50,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:50,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:50,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:50,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:50,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:50,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:50,613 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:50,613 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:50,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:50,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:50,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:50,869 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:50,870 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:50,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-4t.c.bpl [2025-02-17 22:45:50,874 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-4t.c.bpl' [2025-02-17 22:45:50,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:50,891 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:50,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:50,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:50,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:50,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,909 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:50,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:50,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:50,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:50,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:50,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:50,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:50,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:50,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:50,928 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,956 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 22:45:50,959 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 22:45:50,979 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:50,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:50,979 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:50,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:50,979 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:50,980 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:50,980 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:45:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:45:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:45:50,981 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 22:45:51,014 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:51,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:51,099 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:51,100 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:51,114 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:51,115 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:51,115 INFO L201 PluginConnector]: Adding new model barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:51 BoogieIcfgContainer [2025-02-17 22:45:51,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:51,117 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:51,117 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:51,121 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:51,122 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:51,122 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/2) ... [2025-02-17 22:45:51,124 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34a445de and model type barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:51, skipping insertion in model container [2025-02-17 22:45:51,124 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:51,124 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:51" (2/2) ... [2025-02-17 22:45:51,125 INFO L363 chiAutomizerObserver]: Analyzing ICFG barrier-4t.c.bpl [2025-02-17 22:45:51,203 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:45:51,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 136 flow [2025-02-17 22:45:51,261 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2025-02-17 22:45:51,263 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:45:51,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 8/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-17 22:45:51,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 136 flow [2025-02-17 22:45:51,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 46 transitions, 116 flow [2025-02-17 22:45:51,280 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:51,280 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:51,280 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:51,280 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:51,280 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:51,280 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:51,280 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:51,280 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:51,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:51,799 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-02-17 22:45:51,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:51,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:51,804 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:51,804 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:51,804 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:51,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 5267 states, but on-demand construction may add more states [2025-02-17 22:45:51,895 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-02-17 22:45:51,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:51,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:51,896 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:51,896 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:51,900 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:51,900 INFO L754 eck$LassoCheckResult]: Loop: "[121] L26-->L28: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[123] L28-->L26: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:51,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash 4591, now seen corresponding path program 1 times [2025-02-17 22:45:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:51,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803380622] [2025-02-17 22:45:51,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:51,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,964 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:51,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:51,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash 4835, now seen corresponding path program 1 times [2025-02-17 22:45:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345668200] [2025-02-17 22:45:51,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:51,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:51,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,997 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:51,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:52,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 4415825, now seen corresponding path program 1 times [2025-02-17 22:45:52,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:52,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984081913] [2025-02-17 22:45:52,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:52,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:52,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:52,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:52,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,011 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:52,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:52,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:52,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:52,066 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:52,066 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:52,067 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:52,067 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:52,067 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:52,067 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,067 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:52,067 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:52,067 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:52,067 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:52,067 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:52,076 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:52,117 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:52,118 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:52,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,124 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 22:45:52,126 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 22:45:52,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:52,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:52,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:45:52,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,153 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 22:45:52,154 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 22:45:52,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:52,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:52,227 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:52,232 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 22:45:52,233 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:52,233 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:52,233 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:52,233 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:52,233 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:52,233 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,233 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:52,233 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:52,233 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:52,233 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:52,233 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:52,234 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:52,264 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:52,267 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:52,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,269 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 22:45:52,305 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 22:45:52,305 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 22:45:52,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:52,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:52,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:52,320 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:52,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:52,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:52,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:52,328 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:52,334 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:52,334 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:52,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,339 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 22:45:52,341 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 22:45:52,341 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:52,342 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:52,342 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:52,342 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:45:52,348 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 22:45:52,351 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:52,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:52,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:52,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:52,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:52,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:52,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:52,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:52,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:52,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:52,392 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:52,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:52,429 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 22:45:52,432 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 22:45:52,471 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 22:45:52,478 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 5267 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:52,998 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 5267 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18338 states and 85592 transitions. Complement of second has 7 states. [2025-02-17 22:45:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-02-17 22:45:53,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:53,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:53,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:53,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:53,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:53,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:53,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18338 states and 85592 transitions. [2025-02-17 22:45:53,338 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-02-17 22:45:53,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18338 states to 15000 states and 70689 transitions. [2025-02-17 22:45:53,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5844 [2025-02-17 22:45:53,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8960 [2025-02-17 22:45:53,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15000 states and 70689 transitions. [2025-02-17 22:45:53,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:53,733 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15000 states and 70689 transitions. [2025-02-17 22:45:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15000 states and 70689 transitions. [2025-02-17 22:45:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15000 to 11886. [2025-02-17 22:45:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11886 states, 11886 states have (on average 4.836362106680128) internal successors, (57485), 11885 states have internal predecessors, (57485), 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 22:45:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11886 states to 11886 states and 57485 transitions. [2025-02-17 22:45:54,290 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-02-17 22:45:54,290 INFO L432 stractBuchiCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-02-17 22:45:54,290 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:54,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11886 states and 57485 transitions. [2025-02-17 22:45:54,384 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-02-17 22:45:54,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:54,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:54,385 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:54,385 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:54,386 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:54,386 INFO L754 eck$LassoCheckResult]: Loop: "[130] L41-->L43: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[132] L43-->L41: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:54,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 142482, now seen corresponding path program 1 times [2025-02-17 22:45:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421739683] [2025-02-17 22:45:54,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:54,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:54,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:54,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:54,394 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:54,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:54,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:54,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:54,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:54,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash 5123, now seen corresponding path program 1 times [2025-02-17 22:45:54,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:54,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740363503] [2025-02-17 22:45:54,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:54,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:54,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:54,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:54,404 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:54,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:54,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:54,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:54,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:54,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash 136929364, now seen corresponding path program 1 times [2025-02-17 22:45:54,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:54,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462328988] [2025-02-17 22:45:54,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:54,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:54,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:54,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:54,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:54,414 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:54,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:54,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:54,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:54,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:54,513 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:54,513 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:54,513 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:54,513 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:54,513 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:54,513 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,513 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:54,514 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:54,514 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:54,514 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:54,514 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:54,514 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:54,535 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:54,535 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:54,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,537 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 22:45:54,539 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 22:45:54,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:54,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:54,556 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 22:45:54,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,558 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 22:45:54,560 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 22:45:54,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:54,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:54,628 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:54,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:54,633 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:54,633 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:54,633 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:54,633 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:54,633 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:54,633 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,633 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:54,633 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:54,633 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:54,633 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:54,633 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:54,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:54,655 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:54,655 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:54,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,657 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 22:45:54,658 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 22:45:54,660 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 22:45:54,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:54,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:54,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:54,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:54,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:54,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:54,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:54,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:54,675 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:54,675 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:54,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,678 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 22:45:54,679 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 22:45:54,680 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:54,680 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:54,681 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:54,681 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:45:54,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:54,687 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:54,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:54,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:54,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:54,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:54,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:54,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:54,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:54,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:54,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:54,717 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:54,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:54,731 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:54,731 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11886 states and 57485 transitions. cyclomatic complexity: 48615 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:55,061 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 22:45:55,389 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11886 states and 57485 transitions. cyclomatic complexity: 48615. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42933 states and 210258 transitions. Complement of second has 7 states. [2025-02-17 22:45:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2025-02-17 22:45:55,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:55,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:55,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:55,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:55,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:45:55,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:55,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42933 states and 210258 transitions. [2025-02-17 22:45:56,295 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-02-17 22:45:56,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42933 states to 31253 states and 155588 transitions. [2025-02-17 22:45:56,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8996 [2025-02-17 22:45:56,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12512 [2025-02-17 22:45:56,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31253 states and 155588 transitions. [2025-02-17 22:45:56,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:56,816 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31253 states and 155588 transitions. [2025-02-17 22:45:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31253 states and 155588 transitions. [2025-02-17 22:45:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31253 to 27739. [2025-02-17 22:45:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27739 states, 27739 states have (on average 5.096146220123292) internal successors, (141362), 27738 states have internal predecessors, (141362), 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 22:45:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27739 states to 27739 states and 141362 transitions. [2025-02-17 22:45:57,774 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-02-17 22:45:57,774 INFO L432 stractBuchiCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-02-17 22:45:57,775 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:57,775 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27739 states and 141362 transitions. [2025-02-17 22:45:58,144 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-02-17 22:45:58,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:58,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:58,145 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:45:58,145 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:58,146 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:45:58,146 INFO L754 eck$LassoCheckResult]: Loop: "[139] L56-->L58: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[141] L58-->L56: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-02-17 22:45:58,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash 4417106, now seen corresponding path program 1 times [2025-02-17 22:45:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502212727] [2025-02-17 22:45:58,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:58,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:58,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:58,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,170 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:58,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:58,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:58,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:58,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash 5411, now seen corresponding path program 1 times [2025-02-17 22:45:58,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:58,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746525545] [2025-02-17 22:45:58,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:58,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,185 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:58,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:58,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash -50123980, now seen corresponding path program 1 times [2025-02-17 22:45:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477342072] [2025-02-17 22:45:58,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:58,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:45:58,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:45:58,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,203 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:58,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:45:58,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:45:58,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:58,240 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:58,240 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:58,240 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:58,240 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:58,240 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:58,240 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,240 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:58,240 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:58,240 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:58,240 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:58,240 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:58,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:58,275 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:58,276 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,279 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 22:45:58,280 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 22:45:58,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:58,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:58,308 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 22:45:58,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,310 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 22:45:58,312 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 22:45:58,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:58,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:58,377 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:58,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:45:58,380 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:58,380 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:58,380 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:58,380 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:58,381 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:58,381 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,381 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:58,381 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:58,381 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:58,381 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:58,381 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:58,381 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:58,400 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:58,400 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:58,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,403 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 22:45:58,404 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 22:45:58,406 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 22:45:58,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:58,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:58,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:58,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:58,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:58,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:58,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:58,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:58,423 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:58,424 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:58,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,426 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 22:45:58,428 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 22:45:58,429 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:58,429 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:58,429 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:58,429 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-02-17 22:45:58,434 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 22:45:58,435 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:58,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:58,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:58,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:58,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:58,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:58,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:58,466 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:58,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:58,480 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 22:45:58,480 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 22:45:58,481 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27739 states and 141362 transitions. cyclomatic complexity: 119513 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 22:45:58,777 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:45:58,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:46:00,004 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27739 states and 141362 transitions. cyclomatic complexity: 119513. 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 101343 states and 519149 transitions. Complement of second has 7 states. [2025-02-17 22:46:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:00,005 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 22:46:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-02-17 22:46:00,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:46:00,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:00,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:46:00,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:00,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:46:00,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:00,006 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101343 states and 519149 transitions. [2025-02-17 22:46:01,843 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-02-17 22:46:02,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101343 states to 65163 states and 337875 transitions. [2025-02-17 22:46:02,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14459 [2025-02-17 22:46:02,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17791 [2025-02-17 22:46:02,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65163 states and 337875 transitions. [2025-02-17 22:46:02,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:02,877 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65163 states and 337875 transitions. [2025-02-17 22:46:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65163 states and 337875 transitions. [2025-02-17 22:46:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65163 to 59395. [2025-02-17 22:46:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59395 states, 59395 states have (on average 5.290361141510228) internal successors, (314221), 59394 states have internal predecessors, (314221), 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 22:46:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59395 states to 59395 states and 314221 transitions. [2025-02-17 22:46:05,104 INFO L240 hiAutomatonCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-02-17 22:46:05,104 INFO L432 stractBuchiCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-02-17 22:46:05,105 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:46:05,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59395 states and 314221 transitions. [2025-02-17 22:46:05,664 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-02-17 22:46:05,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:05,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:05,665 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:46:05,665 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:05,665 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[167] L15-->L71: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:46:05,665 INFO L754 eck$LassoCheckResult]: Loop: "[148] L71-->L73: Formula: (< v_x5_5 v_z_15) InVars {x5=v_x5_5, z=v_z_15} OutVars{x5=v_x5_5, z=v_z_15} AuxVars[] AssignedVars[]" "[150] L73-->L71: Formula: (= v_x5_6 (+ v_x5_7 1)) InVars {x5=v_x5_7} OutVars{x5=v_x5_6} AuxVars[] AssignedVars[x5]" [2025-02-17 22:46:05,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash 136930453, now seen corresponding path program 1 times [2025-02-17 22:46:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035481926] [2025-02-17 22:46:05,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:05,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:05,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:05,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:05,670 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:05,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:05,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:05,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:05,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:05,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 5699, now seen corresponding path program 1 times [2025-02-17 22:46:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980749900] [2025-02-17 22:46:05,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:05,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:05,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:05,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:05,675 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:05,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:05,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:05,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:05,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:05,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1553816105, now seen corresponding path program 1 times [2025-02-17 22:46:05,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:05,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488347120] [2025-02-17 22:46:05,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:05,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:46:05,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:46:05,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:05,680 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:05,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:46:05,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:46:05,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:05,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:05,703 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:05,703 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:05,703 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:05,703 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:05,703 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:05,703 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:05,703 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:05,703 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:05,703 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:05,703 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:05,703 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:05,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:05,728 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:05,728 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:05,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:05,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:05,732 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 22:46:05,732 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 22:46:05,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:05,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:05,749 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 22:46:05,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:05,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:05,751 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 22:46:05,752 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 22:46:05,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:05,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:05,812 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:05,815 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 22:46:05,816 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:05,816 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:05,816 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:05,816 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:05,816 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:05,816 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:05,816 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:05,816 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:05,816 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:05,816 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:05,816 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:05,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:05,828 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:05,828 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:05,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:05,830 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 22:46:05,831 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 22:46:05,832 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 22:46:05,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:05,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:05,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:05,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:05,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:05,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:05,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:05,844 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:05,846 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:05,846 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:05,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:05,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:05,848 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 22:46:05,849 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 22:46:05,850 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:05,850 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:05,850 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:05,850 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x5, z) = -1*x5 + 1*z Supporting invariants [] [2025-02-17 22:46:05,854 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 22:46:05,855 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:05,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:05,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:05,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:05,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:05,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:05,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:05,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:05,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:05,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:05,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:05,879 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:05,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:05,889 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 22:46:05,889 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 22:46:05,889 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 59395 states and 314221 transitions. cyclomatic complexity: 265054 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 22:46:06,246 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 22:46:08,413 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 59395 states and 314221 transitions. cyclomatic complexity: 265054. 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 195122 states and 1023917 transitions. Complement of second has 7 states. [2025-02-17 22:46:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:08,414 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 22:46:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-02-17 22:46:08,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:08,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:08,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:46:08,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:08,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:46:08,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:08,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195122 states and 1023917 transitions. [2025-02-17 22:46:12,178 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-02-17 22:46:12,203 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195122 states to 3816 states and 15176 transitions. [2025-02-17 22:46:12,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1151 [2025-02-17 22:46:12,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1151 [2025-02-17 22:46:12,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3816 states and 15176 transitions. [2025-02-17 22:46:12,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:12,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-02-17 22:46:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states and 15176 transitions. [2025-02-17 22:46:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3816. [2025-02-17 22:46:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3816 states have (on average 3.9769392033542976) internal successors, (15176), 3815 states have internal predecessors, (15176), 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 22:46:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 15176 transitions. [2025-02-17 22:46:12,259 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-02-17 22:46:12,259 INFO L432 stractBuchiCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-02-17 22:46:12,259 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:46:12,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3816 states and 15176 transitions. [2025-02-17 22:46:12,403 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-02-17 22:46:12,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:12,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:12,403 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:46:12,403 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:12,403 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[124] L31-->L32-1: Formula: (<= 4 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-02-17 22:46:12,404 INFO L754 eck$LassoCheckResult]: Loop: "[126] L32-1-->L34: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[128] L34-->L32-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:46:12,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash 136889707, now seen corresponding path program 1 times [2025-02-17 22:46:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295292386] [2025-02-17 22:46:12,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:12,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:12,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:12,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:12,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:12,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:12,458 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 22:46:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:12,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295292386] [2025-02-17 22:46:12,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295292386] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:12,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:12,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:46:12,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738840023] [2025-02-17 22:46:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:12,463 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:46:12,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash 4995, now seen corresponding path program 1 times [2025-02-17 22:46:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727302338] [2025-02-17 22:46:12,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:12,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:12,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:12,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:12,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:12,468 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:12,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:12,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:12,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:12,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:12,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:12,483 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:12,483 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:12,483 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:12,483 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:12,483 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:12,483 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:12,483 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:12,483 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:12,483 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:46:12,483 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:12,484 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:12,484 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:12,498 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:12,498 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:12,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:12,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:12,501 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:12,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:46:12,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:12,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:12,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:12,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:12,524 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:12,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:46:12,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:12,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:12,592 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:12,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:12,596 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:12,596 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:12,596 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:12,596 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:12,596 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:12,596 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:12,596 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:12,596 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:12,596 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:46:12,596 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:12,596 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:12,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:12,613 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:12,613 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:12,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:12,615 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:12,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:46:12,617 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 22:46:12,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:12,626 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:12,626 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:12,626 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:12,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:12,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:12,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:12,633 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:12,636 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:12,636 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:46:12,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:12,638 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:12,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:46:12,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:12,640 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:12,640 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:12,640 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:46:12,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:46:12,646 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:12,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:12,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:12,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:12,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:12,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:12,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:12,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:12,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:12,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:12,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:12,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:12,676 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:12,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:12,686 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 22:46:12,687 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 22:46:12,688 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3816 states and 15176 transitions. cyclomatic complexity: 12010 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 22:46:12,801 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3816 states and 15176 transitions. cyclomatic complexity: 12010. 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 8572 states and 35258 transitions. Complement of second has 7 states. [2025-02-17 22:46:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:12,802 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 22:46:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-17 22:46:12,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:12,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:12,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:46:12,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:12,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:46:12,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:12,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8572 states and 35258 transitions. [2025-02-17 22:46:12,877 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 188 [2025-02-17 22:46:12,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8572 states to 5167 states and 20286 transitions. [2025-02-17 22:46:12,909 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1218 [2025-02-17 22:46:12,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1443 [2025-02-17 22:46:12,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5167 states and 20286 transitions. [2025-02-17 22:46:12,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:12,912 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5167 states and 20286 transitions. [2025-02-17 22:46:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states and 20286 transitions. [2025-02-17 22:46:12,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 3941. [2025-02-17 22:46:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3941 states have (on average 3.9662522202486676) internal successors, (15631), 3940 states have internal predecessors, (15631), 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 22:46:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 15631 transitions. [2025-02-17 22:46:12,980 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3941 states and 15631 transitions. [2025-02-17 22:46:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:12,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:46:12,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:46:12,984 INFO L87 Difference]: Start difference. First operand 3941 states and 15631 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:13,034 INFO L93 Difference]: Finished difference Result 2462 states and 9380 transitions. [2025-02-17 22:46:13,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2462 states and 9380 transitions. [2025-02-17 22:46:13,049 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-02-17 22:46:13,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2462 states to 2452 states and 9330 transitions. [2025-02-17 22:46:13,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 743 [2025-02-17 22:46:13,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 743 [2025-02-17 22:46:13,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2452 states and 9330 transitions. [2025-02-17 22:46:13,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:13,060 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-02-17 22:46:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states and 9330 transitions. [2025-02-17 22:46:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2452. [2025-02-17 22:46:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2452 states have (on average 3.805057096247961) internal successors, (9330), 2451 states have internal predecessors, (9330), 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 22:46:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 9330 transitions. [2025-02-17 22:46:13,090 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-02-17 22:46:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:46:13,091 INFO L432 stractBuchiCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-02-17 22:46:13,091 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:46:13,091 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2452 states and 9330 transitions. [2025-02-17 22:46:13,100 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-02-17 22:46:13,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:13,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:13,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:46:13,100 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:13,101 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[133] L46-->L47-1: Formula: (<= 4 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-02-17 22:46:13,101 INFO L754 eck$LassoCheckResult]: Loop: "[135] L47-1-->L49: 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[]" "[137] L49-->L47-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:46:13,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash -957082353, now seen corresponding path program 1 times [2025-02-17 22:46:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189053196] [2025-02-17 22:46:13,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:13,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:46:13,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:46:13,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:13,136 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 22:46:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:13,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189053196] [2025-02-17 22:46:13,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189053196] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:13,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:13,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:46:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732050755] [2025-02-17 22:46:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:13,137 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:46:13,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 5283, now seen corresponding path program 1 times [2025-02-17 22:46:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:13,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484109604] [2025-02-17 22:46:13,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:13,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:13,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:13,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:13,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:13,140 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:13,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:13,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:13,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:13,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:13,157 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:13,157 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:13,157 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:13,157 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:13,157 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:13,157 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,157 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:13,157 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:13,157 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:46:13,157 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:13,157 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:13,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:13,171 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:13,171 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,173 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:13,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:46:13,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:13,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:13,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-17 22:46:13,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,193 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:13,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:46:13,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:13,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:13,255 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:13,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:13,259 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:13,259 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:13,259 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:13,259 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:13,259 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:13,259 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,259 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:13,259 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:13,259 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:46:13,259 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:13,259 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:13,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:13,279 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:13,280 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,282 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:13,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:46:13,284 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 22:46:13,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:13,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:13,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:13,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:13,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:13,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:13,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:13,296 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:13,299 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:13,299 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:13,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,304 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:13,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:46:13,306 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:13,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:13,306 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:13,306 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-02-17 22:46:13,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:13,312 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:13,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:13,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:46:13,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:46:13,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:13,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:13,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:13,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:13,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:13,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:13,341 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:13,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:13,349 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 22:46:13,350 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 22:46:13,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2452 states and 9330 transitions. cyclomatic complexity: 7323 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 22:46:13,426 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2452 states and 9330 transitions. cyclomatic complexity: 7323. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 4978 states and 19892 transitions. Complement of second has 7 states. [2025-02-17 22:46:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 22:46:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-02-17 22:46:13,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:46:13,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:13,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-17 22:46:13,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:13,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 4 letters. [2025-02-17 22:46:13,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:13,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4978 states and 19892 transitions. [2025-02-17 22:46:13,464 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 140 [2025-02-17 22:46:13,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4978 states to 3235 states and 12053 transitions. [2025-02-17 22:46:13,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 806 [2025-02-17 22:46:13,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 975 [2025-02-17 22:46:13,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3235 states and 12053 transitions. [2025-02-17 22:46:13,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:13,482 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3235 states and 12053 transitions. [2025-02-17 22:46:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states and 12053 transitions. [2025-02-17 22:46:13,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-17 22:46:13,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2535. [2025-02-17 22:46:13,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:46:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2535 states have (on average 3.7956607495069035) internal successors, (9622), 2534 states have internal predecessors, (9622), 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 22:46:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 9622 transitions. [2025-02-17 22:46:13,607 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2535 states and 9622 transitions. [2025-02-17 22:46:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:13,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-17 22:46:13,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-17 22:46:13,607 INFO L87 Difference]: Start difference. First operand 2535 states and 9622 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 22:46:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:13,637 INFO L93 Difference]: Finished difference Result 1051 states and 3900 transitions. [2025-02-17 22:46:13,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1051 states and 3900 transitions. [2025-02-17 22:46:13,644 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-02-17 22:46:13,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1051 states to 901 states and 3289 transitions. [2025-02-17 22:46:13,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2025-02-17 22:46:13,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2025-02-17 22:46:13,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 901 states and 3289 transitions. [2025-02-17 22:46:13,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:13,649 INFO L218 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-02-17 22:46:13,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states and 3289 transitions. [2025-02-17 22:46:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2025-02-17 22:46:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 901 states have (on average 3.6503884572697003) internal successors, (3289), 900 states have internal predecessors, (3289), 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 22:46:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 3289 transitions. [2025-02-17 22:46:13,659 INFO L240 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-02-17 22:46:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-17 22:46:13,659 INFO L432 stractBuchiCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-02-17 22:46:13,660 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-02-17 22:46:13,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 901 states and 3289 transitions. [2025-02-17 22:46:13,662 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-02-17 22:46:13,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:13,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:13,663 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:46:13,663 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:13,663 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->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]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[164] L14-->L56: 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]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[138] L56-->L60: Formula: (<= v_z_10 v_x4_8) InVars {x4=v_x4_8, z=v_z_10} OutVars{x4=v_x4_8, z=v_z_10} AuxVars[] AssignedVars[]" "[140] L60-->L61: Formula: (= v_x2_7 (+ v_x2_8 1)) InVars {x2=v_x2_8} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[142] L61-->L62-1: Formula: (<= 4 v_x2_9) InVars {x2=v_x2_9} OutVars{x2=v_x2_9} AuxVars[] AssignedVars[]" [2025-02-17 22:46:13,663 INFO L754 eck$LassoCheckResult]: Loop: "[144] L62-1-->L64: Formula: (< v_x5_1 v_z_11) InVars {x5=v_x5_1, z=v_z_11} OutVars{x5=v_x5_1, z=v_z_11} AuxVars[] AssignedVars[]" "[146] L64-->L62-1: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" [2025-02-17 22:46:13,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1189822374, now seen corresponding path program 1 times [2025-02-17 22:46:13,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:13,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928603984] [2025-02-17 22:46:13,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:13,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:13,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-17 22:46:13,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-17 22:46:13,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:13,699 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 22:46:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:13,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928603984] [2025-02-17 22:46:13,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928603984] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:13,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:13,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-17 22:46:13,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629948246] [2025-02-17 22:46:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:13,699 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:46:13,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 5571, now seen corresponding path program 1 times [2025-02-17 22:46:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862697655] [2025-02-17 22:46:13,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:13,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:13,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:13,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:13,702 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:13,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:13,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:13,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:13,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:13,713 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:13,713 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:13,713 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:13,713 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:13,713 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:13,713 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,713 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:13,713 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:13,713 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration7_Loop [2025-02-17 22:46:13,713 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:13,713 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:13,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:13,726 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:13,726 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:13,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,728 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:13,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:46:13,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:13,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:13,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:46:13,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,750 INFO L229 MonitoredProcess]: Starting monitored process 27 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 22:46:13,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-17 22:46:13,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:13,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:13,812 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:13,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-02-17 22:46:13,816 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:13,817 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:13,817 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:13,817 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:13,817 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:13,817 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,817 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:13,817 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:13,817 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration7_Loop [2025-02-17 22:46:13,817 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:13,817 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:13,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:13,833 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:13,833 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:13,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,835 INFO L229 MonitoredProcess]: Starting monitored process 28 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 22:46:13,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-17 22:46:13,838 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 22:46:13,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:13,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:13,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:13,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:13,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:13,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:13,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:13,852 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:13,855 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:13,855 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:13,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:13,857 INFO L229 MonitoredProcess]: Starting monitored process 29 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 22:46:13,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-17 22:46:13,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:13,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:13,859 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:13,859 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-02-17 22:46:13,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:13,865 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:13,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:13,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-17 22:46:13,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-17 22:46:13,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:13,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:13,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:13,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:13,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:13,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:13,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:13,905 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:13,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:13,916 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 22:46:13,916 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 22:46:13,917 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 901 states and 3289 transitions. cyclomatic complexity: 2551 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 22:46:13,945 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 901 states and 3289 transitions. cyclomatic complexity: 2551. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 1356 states and 4915 transitions. Complement of second has 6 states. [2025-02-17 22:46:13,945 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 22:46:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 22:46:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2025-02-17 22:46:13,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 2 letters. [2025-02-17 22:46:13,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:13,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 13 letters. Loop has 2 letters. [2025-02-17 22:46:13,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:13,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 4 letters. [2025-02-17 22:46:13,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:13,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1356 states and 4915 transitions. [2025-02-17 22:46:13,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:46:13,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1356 states to 0 states and 0 transitions. [2025-02-17 22:46:13,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:46:13,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:46:13,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:46:13,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:46:13,952 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:13,952 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:13,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:13,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-17 22:46:13,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-17 22:46:13,953 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22:46:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:13,953 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:46:13,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:46:13,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:46:13,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:46:13,953 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:46:13,953 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L338 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2025-02-17 22:46:13,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:46:13,953 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:46:13,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:46:13,958 INFO L201 PluginConnector]: Adding new model barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:46:13 BoogieIcfgContainer [2025-02-17 22:46:13,958 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:46:13,959 INFO L158 Benchmark]: Toolchain (without parser) took 23068.30ms. Allocated memory was 155.2MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 84.0MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2025-02-17 22:46:13,959 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.79ms. Allocated memory is still 155.2MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:46:13,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.87ms. Allocated memory is still 155.2MB. Free memory was 84.0MB in the beginning and 82.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:46:13,959 INFO L158 Benchmark]: Boogie Preprocessor took 15.60ms. Allocated memory is still 155.2MB. Free memory was 82.6MB in the beginning and 81.9MB in the end (delta: 753.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:46:13,959 INFO L158 Benchmark]: RCFGBuilder took 187.71ms. Allocated memory is still 155.2MB. Free memory was 81.9MB in the beginning and 72.2MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-02-17 22:46:13,959 INFO L158 Benchmark]: BuchiAutomizer took 22841.37ms. Allocated memory was 155.2MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 72.1MB in the beginning and 4.6GB in the end (delta: -4.6GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2025-02-17 22:46:13,960 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.79ms. Allocated memory is still 155.2MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.87ms. Allocated memory is still 155.2MB. Free memory was 84.0MB in the beginning and 82.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 15.60ms. Allocated memory is still 155.2MB. Free memory was 82.6MB in the beginning and 81.9MB in the end (delta: 753.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 187.71ms. Allocated memory is still 155.2MB. Free memory was 81.9MB in the beginning and 72.2MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 22841.37ms. Allocated memory was 155.2MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 72.1MB in the beginning and 4.6GB in the end (delta: -4.6GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (3 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.7s and 8 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.3s. Büchi inclusion checks took 5.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 8. Automata minimization 4.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 14322 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 8.8s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 592 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 585 mSDsluCounter, 721 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 356 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 365 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 74ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:46:13,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:14,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...