/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-a4216cd-m [2025-04-26 16:24:44,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:44,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:44,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:44,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:44,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:44,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:44,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:44,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:44,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:44,367 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:44,368 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:44,368 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:44,368 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:44,368 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:44,368 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:44,368 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:44,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:44,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:44,370 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:44,370 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:44,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:44,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:44,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:44,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:44,371 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:44,371 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:44,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:44,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:44,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:44,630 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:44,631 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:44,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-4t.c.bpl [2025-04-26 16:24:44,634 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-4t.c.bpl' [2025-04-26 16:24:44,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:44,649 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:44,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:44,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:44,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:44,658 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 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,681 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 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,687 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:44,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:44,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:44,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:44,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:44,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,698 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:44,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:44,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:44,718 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:44,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:44,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:44,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:24:44,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:44,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:44,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:44,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:44,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:24:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:24:44,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:24:44,774 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:44,814 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:44,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:44,936 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:44,936 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:44,946 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:44,946 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:44,948 INFO L201 PluginConnector]: Adding new model barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:44 BoogieIcfgContainer [2025-04-26 16:24:44,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:44,949 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:44,949 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:44,954 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:44,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:44,954 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/2) ... [2025-04-26 16:24:44,956 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41c2c0b5 and model type barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:44, skipping insertion in model container [2025-04-26 16:24:44,957 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:44,957 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:44" (2/2) ... [2025-04-26 16:24:44,958 INFO L376 chiAutomizerObserver]: Analyzing ICFG barrier-4t.c.bpl [2025-04-26 16:24:45,025 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:24:45,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 136 flow [2025-04-26 16:24:45,080 INFO L116 PetriNetUnfolderBase]: 8/46 cut-off events. [2025-04-26 16:24:45,083 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:24:45,090 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. [2025-04-26 16:24:45,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 136 flow [2025-04-26 16:24:45,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 46 transitions, 116 flow [2025-04-26 16:24:45,095 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 51 places, 46 transitions, 116 flow [2025-04-26 16:24:45,104 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:45,104 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:45,104 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:45,104 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:45,104 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:45,107 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:45,107 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:45,107 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:45,109 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:45,643 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-04-26 16:24:45,644 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:45,644 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:45,648 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:45,648 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:45,648 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:45,648 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 5267 states, but on-demand construction may add more states [2025-04-26 16:24:45,840 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-04-26 16:24:45,841 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:45,841 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:45,841 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:45,841 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:45,846 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:45,847 INFO L754 eck$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]" [2025-04-26 16:24:45,853 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash 4591, now seen corresponding path program 1 times [2025-04-26 16:24:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,860 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985194672] [2025-04-26 16:24:45,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,914 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,934 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,935 INFO L85 PathProgramCache]: Analyzing trace with hash 4835, now seen corresponding path program 1 times [2025-04-26 16:24:45,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,935 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134794359] [2025-04-26 16:24:45,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,944 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,949 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash 4415825, now seen corresponding path program 1 times [2025-04-26 16:24:45,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,949 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56076498] [2025-04-26 16:24:45,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:45,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:45,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,957 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:45,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:45,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,009 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:46,010 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:46,011 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:46,011 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:46,011 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:46,011 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,011 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:46,011 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:46,011 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:46,011 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:46,011 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:46,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,055 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:46,055 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:46,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:24:46,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:46,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,080 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 [2025-04-26 16:24:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:24:46,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:46,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,154 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:46,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:24:46,159 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:46,159 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:46,159 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:46,159 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:46,159 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:46,159 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,159 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:46,159 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:46,159 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:46,160 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:46,160 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:46,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,188 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:46,191 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:46,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:24:46,197 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:46,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:46,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:46,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:46,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:46,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:46,214 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:46,214 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:46,218 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:46,223 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:46,224 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:46,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:24:46,230 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:46,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:46,234 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:46,234 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:46,234 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:24:46,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:46,242 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:46,266 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:46,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:46,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:46,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:46,294 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:46,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:46,386 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 [2025-04-26 16:24:46,389 INFO L70 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, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,061 INFO L74 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, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 18338 states and 85592 transitions. Complement of second has 7 states. [2025-04-26 16:24:47,063 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-04-26 16:24:47,075 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:47,076 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,076 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:47,076 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,076 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:47,076 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18338 states and 85592 transitions. [2025-04-26 16:24:47,481 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-04-26 16:24:47,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18338 states to 15000 states and 70689 transitions. [2025-04-26 16:24:47,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5844 [2025-04-26 16:24:47,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8960 [2025-04-26 16:24:47,842 INFO L74 IsDeterministic]: Start isDeterministic. Operand 15000 states and 70689 transitions. [2025-04-26 16:24:47,844 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:47,844 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15000 states and 70689 transitions. [2025-04-26 16:24:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15000 states and 70689 transitions. [2025-04-26 16:24:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15000 to 11886. [2025-04-26 16:24:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11886 states, 11886 states have (on average 4.836362106680128) internal successors, (in total 57485), 11885 states have internal predecessors, (57485), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11886 states to 11886 states and 57485 transitions. [2025-04-26 16:24:48,380 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-04-26 16:24:48,380 INFO L438 stractBuchiCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-04-26 16:24:48,380 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:48,381 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11886 states and 57485 transitions. [2025-04-26 16:24:48,504 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-04-26 16:24:48,505 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:48,505 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:48,506 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:48,506 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:48,506 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:24:48,506 INFO L754 eck$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]" [2025-04-26 16:24:48,507 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash 142482, now seen corresponding path program 1 times [2025-04-26 16:24:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:48,507 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913707493] [2025-04-26 16:24:48,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:48,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:48,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:48,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:48,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:48,514 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:48,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:48,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:48,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:48,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:48,521 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash 5123, now seen corresponding path program 1 times [2025-04-26 16:24:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:48,521 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903690523] [2025-04-26 16:24:48,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:48,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:48,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:48,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:48,526 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:48,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:48,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:48,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:48,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:48,531 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 136929364, now seen corresponding path program 1 times [2025-04-26 16:24:48,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:48,532 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514191565] [2025-04-26 16:24:48,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:48,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:48,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:48,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:48,539 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:48,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:48,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:48,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:48,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:48,565 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:48,565 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:48,565 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:48,565 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:48,565 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:48,565 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:48,565 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:48,565 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:48,565 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:48,565 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:48,565 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:48,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:48,586 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:48,587 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:48,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:48,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:48,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:48,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:24:48,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:48,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:48,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:48,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:48,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:48,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:48,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:24:48,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:48,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:48,688 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:48,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:24:48,693 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:48,693 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:48,693 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:48,693 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:48,693 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:48,693 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:48,693 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:48,693 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:48,693 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:48,693 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:48,693 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:48,694 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:48,714 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:48,714 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:48,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:48,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:48,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:24:48,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:48,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:48,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:48,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:48,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:48,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:48,731 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:48,731 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:48,733 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:48,735 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:48,735 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:48,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:48,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:48,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:48,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:24:48,740 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:48,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:48,744 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:48,744 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:48,744 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 16:24:48,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:48,750 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:48,765 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:48,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:48,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:48,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:48,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:48,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:48,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:48,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:48,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:48,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:48,782 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:48,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:48,799 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 [2025-04-26 16:24:48,799 INFO L70 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, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:49,584 INFO L74 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, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 42933 states and 210258 transitions. Complement of second has 7 states. [2025-04-26 16:24:49,585 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2025-04-26 16:24:49,586 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:24:49,586 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:49,586 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:24:49,586 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:49,586 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:24:49,586 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:49,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42933 states and 210258 transitions. [2025-04-26 16:24:50,254 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-04-26 16:24:51,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42933 states to 31253 states and 155588 transitions. [2025-04-26 16:24:51,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8996 [2025-04-26 16:24:51,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12512 [2025-04-26 16:24:51,157 INFO L74 IsDeterministic]: Start isDeterministic. Operand 31253 states and 155588 transitions. [2025-04-26 16:24:51,157 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:51,157 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31253 states and 155588 transitions. [2025-04-26 16:24:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31253 states and 155588 transitions. [2025-04-26 16:24:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31253 to 27739. [2025-04-26 16:24:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27739 states, 27739 states have (on average 5.096146220123292) internal successors, (in total 141362), 27738 states have internal predecessors, (141362), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27739 states to 27739 states and 141362 transitions. [2025-04-26 16:24:52,224 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-04-26 16:24:52,224 INFO L438 stractBuchiCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-04-26 16:24:52,224 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:52,225 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27739 states and 141362 transitions. [2025-04-26 16:24:52,408 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-04-26 16:24:52,408 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:52,408 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:52,409 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:52,409 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:52,409 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:24:52,409 INFO L754 eck$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]" [2025-04-26 16:24:52,410 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash 4417106, now seen corresponding path program 1 times [2025-04-26 16:24:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:52,410 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931863035] [2025-04-26 16:24:52,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:52,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:52,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:52,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:52,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,413 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:52,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:52,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:52,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:52,416 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash 5411, now seen corresponding path program 1 times [2025-04-26 16:24:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:52,416 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040019660] [2025-04-26 16:24:52,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:52,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:52,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:52,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,420 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:52,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:52,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:52,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:52,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash -50123980, now seen corresponding path program 1 times [2025-04-26 16:24:52,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:52,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743869193] [2025-04-26 16:24:52,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:52,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:52,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:52,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:52,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,427 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:52,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:52,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:52,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:52,447 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:52,447 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:52,448 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:52,448 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:52,448 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:52,448 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,448 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:52,448 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:52,448 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:52,448 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:52,448 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:52,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:52,464 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:52,465 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:52,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:52,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:24:52,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:52,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:52,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:52,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:52,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:24:52,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:52,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:52,565 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:52,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:52,572 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:52,572 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:52,572 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:52,572 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:52,572 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:52,572 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,572 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:52,572 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:52,572 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:52,572 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:52,572 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:52,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:52,591 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:52,592 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:52,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:52,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:24:52,597 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:52,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:52,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:52,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:52,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:52,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:52,608 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:52,608 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:52,610 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:52,613 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:52,613 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:52,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,615 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:52,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:24:52,617 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:52,620 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 [2025-04-26 16:24:52,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:52,621 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:52,621 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:52,621 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-04-26 16:24:52,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:52,628 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:52,640 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:52,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:52,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:52,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:52,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:52,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:52,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:52,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:52,658 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:52,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:52,674 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 [2025-04-26 16:24:52,674 INFO L70 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, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:54,080 INFO L74 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, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 101343 states and 519149 transitions. Complement of second has 7 states. [2025-04-26 16:24:54,080 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-04-26 16:24:54,081 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:54,081 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:54,081 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:54,081 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:54,081 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:24:54,082 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:54,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101343 states and 519149 transitions. [2025-04-26 16:24:55,997 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-04-26 16:24:56,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101343 states to 65163 states and 337875 transitions. [2025-04-26 16:24:56,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14459 [2025-04-26 16:24:57,039 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17791 [2025-04-26 16:24:57,039 INFO L74 IsDeterministic]: Start isDeterministic. Operand 65163 states and 337875 transitions. [2025-04-26 16:24:57,039 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:57,039 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65163 states and 337875 transitions. [2025-04-26 16:24:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65163 states and 337875 transitions. [2025-04-26 16:24:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65163 to 59395. [2025-04-26 16:24:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59395 states, 59395 states have (on average 5.290361141510228) internal successors, (in total 314221), 59394 states have internal predecessors, (314221), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59395 states to 59395 states and 314221 transitions. [2025-04-26 16:24:59,196 INFO L240 hiAutomatonCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-04-26 16:24:59,196 INFO L438 stractBuchiCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-04-26 16:24:59,196 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:59,197 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59395 states and 314221 transitions. [2025-04-26 16:24:59,899 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-04-26 16:24:59,899 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:59,899 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:59,900 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:24:59,900 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:59,901 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[167] L15-->L71: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-04-26 16:24:59,901 INFO L754 eck$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]" [2025-04-26 16:24:59,901 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 136930453, now seen corresponding path program 1 times [2025-04-26 16:24:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:59,902 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468173743] [2025-04-26 16:24:59,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:59,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:59,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:59,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:59,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:59,906 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:59,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:59,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:59,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:59,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:59,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:59,913 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash 5699, now seen corresponding path program 1 times [2025-04-26 16:24:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:59,913 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354680471] [2025-04-26 16:24:59,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:59,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:59,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:59,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:59,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:59,916 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:59,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:59,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:59,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:59,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:59,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:59,918 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1553816105, now seen corresponding path program 1 times [2025-04-26 16:24:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:59,918 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587890749] [2025-04-26 16:24:59,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:59,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:24:59,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:24:59,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:59,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:59,923 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:59,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:24:59,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:24:59,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:59,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:59,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:59,943 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:59,943 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:59,943 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:59,943 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:59,943 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:59,943 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:59,943 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:59,943 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:59,944 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:24:59,944 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:59,944 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:59,944 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:59,960 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:59,960 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:59,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:59,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:59,962 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:59,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:24:59,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:59,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:59,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:24:59,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:59,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:59,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:24:59,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:59,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:00,059 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:00,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:00,064 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:00,064 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:00,064 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:00,064 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:00,064 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:00,064 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,064 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:00,064 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:00,064 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:25:00,064 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:00,064 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:00,065 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:00,083 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:00,084 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:00,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:00,086 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:00,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:25:00,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:00,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:00,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:00,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:00,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:00,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:00,101 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:00,101 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:00,103 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:00,108 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:00,108 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:00,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:00,112 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:00,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:25:00,114 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:00,117 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:00,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:00,118 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:00,118 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:00,118 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x5, z) = -1*x5 + 1*z Supporting invariants [] [2025-04-26 16:25:00,124 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 [2025-04-26 16:25:00,125 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:00,138 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:00,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:00,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:00,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:00,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:00,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:00,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:00,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:00,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:00,161 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:00,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:00,176 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 [2025-04-26 16:25:00,176 INFO L70 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, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:02,810 INFO L74 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, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 195122 states and 1023917 transitions. Complement of second has 7 states. [2025-04-26 16:25:02,811 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-04-26 16:25:02,812 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:25:02,812 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:02,812 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:25:02,812 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:02,812 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:25:02,812 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:02,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195122 states and 1023917 transitions. [2025-04-26 16:25:06,852 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-04-26 16:25:06,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195122 states to 3816 states and 15176 transitions. [2025-04-26 16:25:06,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1151 [2025-04-26 16:25:06,891 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1151 [2025-04-26 16:25:06,891 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3816 states and 15176 transitions. [2025-04-26 16:25:06,891 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:06,891 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-04-26 16:25:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states and 15176 transitions. [2025-04-26 16:25:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3816. [2025-04-26 16:25:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3816 states have (on average 3.9769392033542976) internal successors, (in total 15176), 3815 states have internal predecessors, (15176), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 15176 transitions. [2025-04-26 16:25:06,958 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-04-26 16:25:06,958 INFO L438 stractBuchiCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-04-26 16:25:06,958 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:25:06,958 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3816 states and 15176 transitions. [2025-04-26 16:25:06,978 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-04-26 16:25:06,978 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:06,978 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:06,978 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:25:06,978 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:06,979 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[124] L31-->L32-1: Formula: (<= 4 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-04-26 16:25:06,979 INFO L754 eck$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]" [2025-04-26 16:25:06,979 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:06,979 INFO L85 PathProgramCache]: Analyzing trace with hash 136889707, now seen corresponding path program 1 times [2025-04-26 16:25:06,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:06,979 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431113146] [2025-04-26 16:25:06,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:06,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:06,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:06,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:06,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:07,018 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431113146] [2025-04-26 16:25:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431113146] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:07,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:07,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:25:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123252673] [2025-04-26 16:25:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:07,024 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:25:07,024 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 4995, now seen corresponding path program 1 times [2025-04-26 16:25:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:07,024 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033296757] [2025-04-26 16:25:07,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:07,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:07,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:07,029 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:07,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:07,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:07,041 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:07,041 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:07,041 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:07,041 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:07,041 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:07,041 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,041 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:07,041 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:07,041 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:25:07,041 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:07,041 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:07,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:07,054 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:07,055 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:07,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:25:07,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:07,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:07,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:25:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,075 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:25:07,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:07,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:07,139 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:07,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 16:25:07,143 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:07,143 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:07,143 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:07,143 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:07,143 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:07,143 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,143 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:07,143 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:07,143 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:25:07,143 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:07,143 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:07,143 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:07,164 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:07,164 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,166 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:25:07,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:07,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:07,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:07,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:07,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:07,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:07,180 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:07,180 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:07,182 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:07,184 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:07,184 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:25:07,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,186 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:25:07,189 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:07,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:25:07,192 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:07,192 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:07,192 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 16:25:07,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:07,198 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:07,212 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:07,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:07,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,230 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,242 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 [2025-04-26 16:25:07,242 INFO L70 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, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,473 INFO L74 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, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 8572 states and 35258 transitions. Complement of second has 7 states. [2025-04-26 16:25:07,474 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-04-26 16:25:07,475 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:25:07,475 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,475 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:25:07,475 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,475 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:25:07,475 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,475 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8572 states and 35258 transitions. [2025-04-26 16:25:07,542 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 188 [2025-04-26 16:25:07,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8572 states to 5167 states and 20286 transitions. [2025-04-26 16:25:07,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1218 [2025-04-26 16:25:07,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1443 [2025-04-26 16:25:07,577 INFO L74 IsDeterministic]: Start isDeterministic. Operand 5167 states and 20286 transitions. [2025-04-26 16:25:07,577 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:07,577 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5167 states and 20286 transitions. [2025-04-26 16:25:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states and 20286 transitions. [2025-04-26 16:25:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 3941. [2025-04-26 16:25:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3941 states have (on average 3.9662522202486676) internal successors, (in total 15631), 3940 states have internal predecessors, (15631), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 15631 transitions. [2025-04-26 16:25:07,640 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3941 states and 15631 transitions. [2025-04-26 16:25:07,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:07,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 16:25:07,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-26 16:25:07,644 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, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:07,686 INFO L93 Difference]: Finished difference Result 2462 states and 9380 transitions. [2025-04-26 16:25:07,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2462 states and 9380 transitions. [2025-04-26 16:25:07,698 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-04-26 16:25:07,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2462 states to 2452 states and 9330 transitions. [2025-04-26 16:25:07,707 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 743 [2025-04-26 16:25:07,708 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 743 [2025-04-26 16:25:07,708 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2452 states and 9330 transitions. [2025-04-26 16:25:07,708 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:07,708 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-04-26 16:25:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states and 9330 transitions. [2025-04-26 16:25:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2452. [2025-04-26 16:25:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2452 states have (on average 3.805057096247961) internal successors, (in total 9330), 2451 states have internal predecessors, (9330), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 9330 transitions. [2025-04-26 16:25:07,733 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-04-26 16:25:07,733 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-26 16:25:07,734 INFO L438 stractBuchiCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-04-26 16:25:07,734 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:25:07,734 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2452 states and 9330 transitions. [2025-04-26 16:25:07,741 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-04-26 16:25:07,741 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:07,741 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:07,741 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:25:07,741 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:07,742 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[133] L46-->L47-1: Formula: (<= 4 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-04-26 16:25:07,742 INFO L754 eck$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]" [2025-04-26 16:25:07,742 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -957082353, now seen corresponding path program 1 times [2025-04-26 16:25:07,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:07,742 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889263348] [2025-04-26 16:25:07,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:07,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:25:07,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:25:07,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:07,767 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889263348] [2025-04-26 16:25:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889263348] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 16:25:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873858041] [2025-04-26 16:25:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:07,768 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:25:07,768 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash 5283, now seen corresponding path program 1 times [2025-04-26 16:25:07,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:07,768 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479508879] [2025-04-26 16:25:07,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:07,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:07,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:07,770 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:07,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:07,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:07,786 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:07,786 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:07,787 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:07,787 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:07,787 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:07,787 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,787 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:07,787 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:07,787 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration6_Loop [2025-04-26 16:25:07,787 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:07,787 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:07,787 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:07,799 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:07,799 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:07,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,801 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:25:07,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:07,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:07,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,823 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:25:07,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:07,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:07,889 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:07,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:07,893 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:07,893 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:07,893 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:07,893 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:07,893 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:07,893 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,893 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:07,893 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:07,893 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration6_Loop [2025-04-26 16:25:07,893 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:07,893 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:07,894 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:07,907 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:07,908 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:07,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,910 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:25:07,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:07,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:07,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:07,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:07,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:07,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:07,922 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:07,922 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:07,923 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:07,926 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:07,926 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:07,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,927 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:07,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:25:07,929 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:07,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:07,932 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:07,932 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:07,932 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-04-26 16:25:07,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-04-26 16:25:07,937 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:07,949 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:25:07,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:25:07,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,970 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,980 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 [2025-04-26 16:25:07,980 INFO L70 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, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,055 INFO L74 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, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 4978 states and 19892 transitions. Complement of second has 7 states. [2025-04-26 16:25:08,056 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-04-26 16:25:08,056 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 16:25:08,057 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,057 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 10 letters. Loop has 2 letters. [2025-04-26 16:25:08,057 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,057 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 4 letters. [2025-04-26 16:25:08,057 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4978 states and 19892 transitions. [2025-04-26 16:25:08,089 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 140 [2025-04-26 16:25:08,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4978 states to 3235 states and 12053 transitions. [2025-04-26 16:25:08,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 806 [2025-04-26 16:25:08,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 975 [2025-04-26 16:25:08,109 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3235 states and 12053 transitions. [2025-04-26 16:25:08,109 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:08,109 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3235 states and 12053 transitions. [2025-04-26 16:25:08,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states and 12053 transitions. [2025-04-26 16:25:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2535. [2025-04-26 16:25:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2535 states have (on average 3.7956607495069035) internal successors, (in total 9622), 2534 states have internal predecessors, (9622), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 9622 transitions. [2025-04-26 16:25:08,147 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2535 states and 9622 transitions. [2025-04-26 16:25:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:08,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-26 16:25:08,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-26 16:25:08,147 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, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:08,175 INFO L93 Difference]: Finished difference Result 1051 states and 3900 transitions. [2025-04-26 16:25:08,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1051 states and 3900 transitions. [2025-04-26 16:25:08,180 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-04-26 16:25:08,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1051 states to 901 states and 3289 transitions. [2025-04-26 16:25:08,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2025-04-26 16:25:08,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2025-04-26 16:25:08,184 INFO L74 IsDeterministic]: Start isDeterministic. Operand 901 states and 3289 transitions. [2025-04-26 16:25:08,185 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:08,185 INFO L218 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-04-26 16:25:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states and 3289 transitions. [2025-04-26 16:25:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2025-04-26 16:25:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 901 states have (on average 3.6503884572697003) internal successors, (in total 3289), 900 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 3289 transitions. [2025-04-26 16:25:08,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-04-26 16:25:08,195 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-26 16:25:08,197 INFO L438 stractBuchiCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-04-26 16:25:08,197 INFO L340 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-04-26 16:25:08,197 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 901 states and 3289 transitions. [2025-04-26 16:25:08,202 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-04-26 16:25:08,202 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:08,202 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:08,203 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:25:08,203 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:08,203 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[]" [2025-04-26 16:25:08,203 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]" [2025-04-26 16:25:08,204 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1189822374, now seen corresponding path program 1 times [2025-04-26 16:25:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:08,204 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696920551] [2025-04-26 16:25:08,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:08,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:25:08,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:25:08,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:08,263 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696920551] [2025-04-26 16:25:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696920551] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:08,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-26 16:25:08,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73887989] [2025-04-26 16:25:08,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:08,264 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:25:08,264 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash 5571, now seen corresponding path program 1 times [2025-04-26 16:25:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:08,264 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653329228] [2025-04-26 16:25:08,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:08,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:08,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:08,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:08,268 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:08,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:08,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:08,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:08,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:08,288 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:08,288 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:08,288 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:08,288 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:08,288 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:08,288 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,288 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:08,288 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:08,288 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration7_Loop [2025-04-26 16:25:08,288 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:08,288 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:08,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:08,302 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:08,302 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:08,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,304 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:08,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:08,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:08,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:25:08,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:08,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,384 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) [2025-04-26 16:25:08,385 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 [2025-04-26 16:25:08,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:08,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:08,447 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:08,450 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 [2025-04-26 16:25:08,451 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:08,451 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:08,451 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:08,451 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:08,451 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:08,451 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,451 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:08,451 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:08,451 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-4t.c.bpl_petrified1_Iteration7_Loop [2025-04-26 16:25:08,451 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:08,451 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:08,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:08,467 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:08,467 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:08,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,469 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) [2025-04-26 16:25:08,470 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 [2025-04-26 16:25:08,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:08,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:08,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:08,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:08,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:08,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:08,480 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:08,480 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:08,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:08,484 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:08,484 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:08,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,486 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) [2025-04-26 16:25:08,487 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 [2025-04-26 16:25:08,487 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:08,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-04-26 16:25:08,490 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:08,490 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:08,490 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-04-26 16:25:08,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-04-26 16:25:08,495 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:08,503 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:08,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:25:08,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:25:08,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:08,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:08,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:08,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:08,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:08,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:08,534 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:08,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:08,542 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 [2025-04-26 16:25:08,543 INFO L70 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, (in total 13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,572 INFO L74 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, (in total 13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 1356 states and 4915 transitions. Complement of second has 6 states. [2025-04-26 16:25:08,572 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (in total 13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2025-04-26 16:25:08,573 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 2 letters. [2025-04-26 16:25:08,573 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,573 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 13 letters. Loop has 2 letters. [2025-04-26 16:25:08,573 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,573 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 4 letters. [2025-04-26 16:25:08,573 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1356 states and 4915 transitions. [2025-04-26 16:25:08,580 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:08,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1356 states to 0 states and 0 transitions. [2025-04-26 16:25:08,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:25:08,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:25:08,580 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,580 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:25:08,580 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,580 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:08,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-26 16:25:08,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-26 16:25:08,581 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, (in total 11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:08,581 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:08,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:25:08,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:25:08,581 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:25:08,581 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:25:08,581 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L340 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2025-04-26 16:25:08,581 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,581 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:08,581 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:25:08,586 INFO L201 PluginConnector]: Adding new model barrier-4t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:25:08 BoogieIcfgContainer [2025-04-26 16:25:08,586 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:25:08,587 INFO L158 Benchmark]: Toolchain (without parser) took 23937.64ms. Allocated memory was 167.8MB in the beginning and 7.1GB in the end (delta: 6.9GB). Free memory was 95.1MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2025-04-26 16:25:08,587 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.83ms. Allocated memory is still 167.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:08,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.28ms. Allocated memory is still 167.8MB. Free memory was 95.1MB in the beginning and 93.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:08,587 INFO L158 Benchmark]: Boogie Preprocessor took 28.50ms. Allocated memory is still 167.8MB. Free memory was 93.1MB in the beginning and 92.1MB in the end (delta: 941.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:08,587 INFO L158 Benchmark]: RCFGBuilder took 229.90ms. Allocated memory is still 167.8MB. Free memory was 92.0MB in the beginning and 82.0MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:25:08,587 INFO L158 Benchmark]: BuchiAutomizer took 23637.06ms. Allocated memory was 167.8MB in the beginning and 7.1GB in the end (delta: 6.9GB). Free memory was 81.9MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2025-04-26 16:25:08,588 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 0.83ms. Allocated memory is still 167.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.28ms. Allocated memory is still 167.8MB. Free memory was 95.1MB in the beginning and 93.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 28.50ms. Allocated memory is still 167.8MB. Free memory was 93.1MB in the beginning and 92.1MB in the end (delta: 941.8kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 229.90ms. Allocated memory is still 167.8MB. Free memory was 92.0MB in the beginning and 82.0MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 23637.06ms. Allocated memory was 167.8MB in the beginning and 7.1GB in the end (delta: 6.9GB). Free memory was 81.9MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 23.5s and 8 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.3s. Büchi inclusion checks took 6.0s. 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 9.2s Buchi closure took 0.3s. 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: 42ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - 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. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:25:08,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...