/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/2_thr/c3-barrier-2t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:27,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:27,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:27,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:27,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:27,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:27,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:27,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:27,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:27,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:27,186 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:27,186 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:27,186 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:27,186 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:27,189 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:27,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:27,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:27,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:27,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:27,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:27,191 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:27,191 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:27,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:27,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:27,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:27,403 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:27,403 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:27,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/c3-barrier-2t.c.bpl [2025-02-17 22:45:27,406 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/c3-barrier-2t.c.bpl' [2025-02-17 22:45:27,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:27,420 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:27,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:27,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:27,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:27,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,437 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:27,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:27,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:27,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:27,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:27,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,447 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:27,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:27,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:27,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:27,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/1) ... [2025-02-17 22:45:27,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:27,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:27,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:27,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:45:27,503 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:27,503 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:27,503 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:27,504 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:45:27,540 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:27,542 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:27,616 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:27,616 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:27,626 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:27,626 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:27,627 INFO L201 PluginConnector]: Adding new model c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:27 BoogieIcfgContainer [2025-02-17 22:45:27,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:27,628 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:27,628 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:27,632 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:27,633 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:27,633 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:27" (1/2) ... [2025-02-17 22:45:27,634 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49f4f442 and model type c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:27, skipping insertion in model container [2025-02-17 22:45:27,634 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:27,634 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:27" (2/2) ... [2025-02-17 22:45:27,635 INFO L363 chiAutomizerObserver]: Analyzing ICFG c3-barrier-2t.c.bpl [2025-02-17 22:45:27,696 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:45:27,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 74 flow [2025-02-17 22:45:27,756 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-17 22:45:27,759 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:45:27,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-17 22:45:27,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 30 transitions, 74 flow [2025-02-17 22:45:27,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-02-17 22:45:27,776 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:27,776 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:27,776 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:27,777 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:27,777 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:27,777 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:27,777 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:27,777 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:27,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:27,818 INFO L131 ngComponentsAnalysis]: Automaton has 24 accepting balls. 74 [2025-02-17 22:45:27,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:27,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:27,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:27,825 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:27,825 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:27,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 101 states, but on-demand construction may add more states [2025-02-17 22:45:27,831 INFO L131 ngComponentsAnalysis]: Automaton has 24 accepting balls. 74 [2025-02-17 22:45:27,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:27,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:27,832 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:27,832 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:27,837 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:27,839 INFO L754 eck$LassoCheckResult]: Loop: "[67] L22-->L24: Formula: (< (+ v_x4_1 v_x1_1) v_z_2) InVars {x4=v_x4_1, x1=v_x1_1, z=v_z_2} OutVars{x4=v_x4_1, x1=v_x1_1, z=v_z_2} AuxVars[] AssignedVars[]" "[69] L24-->L25: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[71] L25-->L22: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:45:27,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2940, now seen corresponding path program 1 times [2025-02-17 22:45:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:27,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009565628] [2025-02-17 22:45:27,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:27,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:27,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:27,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:27,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:27,906 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:27,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:27,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:27,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:27,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:27,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:27,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash 96388, now seen corresponding path program 1 times [2025-02-17 22:45:27,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:27,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389342032] [2025-02-17 22:45:27,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:27,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:27,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:27,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:27,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:27,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:27,936 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:27,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:27,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:27,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:27,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:27,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:27,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:27,945 INFO L85 PathProgramCache]: Analyzing trace with hash 87652137, now seen corresponding path program 1 times [2025-02-17 22:45:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899846522] [2025-02-17 22:45:27,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:27,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:27,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:27,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:27,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:27,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:27,956 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:27,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:27,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:27,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:27,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:27,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:28,046 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:28,047 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:28,047 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:28,047 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:28,047 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:28,047 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,048 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:28,048 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:28,048 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:28,048 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:28,048 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:28,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:28,106 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:28,107 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:28,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:45:28,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:28,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:28,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:45:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:45:28,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:28,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:28,231 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:28,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:45:28,235 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:28,236 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:28,236 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:28,236 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:28,236 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:28,236 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,236 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:28,236 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:28,236 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:28,236 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:28,236 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:28,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:28,267 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:28,270 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:28,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:45:28,317 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:28,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:28,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:28,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:28,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:28,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:28,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:28,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:28,340 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:28,344 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:28,344 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:28,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:45:28,352 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:28,352 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:28,352 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:28,353 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1, x4) = 1*z - 1*x1 - 1*x4 Supporting invariants [] [2025-02-17 22:45:28,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:45:28,361 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:28,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:28,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:28,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:28,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:28,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:28,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:28,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:28,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:28,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:28,411 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:45:28,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:28,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:28,507 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:45:28,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 101 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:28,648 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 101 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 239 states and 539 transitions. Complement of second has 6 states. [2025-02-17 22:45:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2025-02-17 22:45:28,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 51 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:45:28,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:28,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 51 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:45:28,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:28,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 51 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:45:28,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:28,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 239 states and 539 transitions. [2025-02-17 22:45:28,675 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 59 [2025-02-17 22:45:28,681 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 239 states to 152 states and 345 transitions. [2025-02-17 22:45:28,682 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2025-02-17 22:45:28,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2025-02-17 22:45:28,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 152 states and 345 transitions. [2025-02-17 22:45:28,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:28,683 INFO L218 hiAutomatonCegarLoop]: Abstraction has 152 states and 345 transitions. [2025-02-17 22:45:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states and 345 transitions. [2025-02-17 22:45:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 132. [2025-02-17 22:45:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 132 states have (on average 2.287878787878788) internal successors, (302), 131 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 302 transitions. [2025-02-17 22:45:28,708 INFO L240 hiAutomatonCegarLoop]: Abstraction has 132 states and 302 transitions. [2025-02-17 22:45:28,708 INFO L432 stractBuchiCegarLoop]: Abstraction has 132 states and 302 transitions. [2025-02-17 22:45:28,708 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:28,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 132 states and 302 transitions. [2025-02-17 22:45:28,714 INFO L131 ngComponentsAnalysis]: Automaton has 23 accepting balls. 59 [2025-02-17 22:45:28,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:28,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:28,715 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:28,715 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:28,715 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[91] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:28,715 INFO L754 eck$LassoCheckResult]: Loop: "[78] L39-->L41: Formula: (< v_x3_5 v_z_6) InVars {x3=v_x3_5, z=v_z_6} OutVars{x3=v_x3_5, z=v_z_6} AuxVars[] AssignedVars[]" "[80] L41-->L39: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:28,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 91231, now seen corresponding path program 1 times [2025-02-17 22:45:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861779788] [2025-02-17 22:45:28,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:28,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:28,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:28,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:28,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:28,722 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:28,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:28,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:28,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:28,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:28,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 3459, now seen corresponding path program 1 times [2025-02-17 22:45:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:28,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312999537] [2025-02-17 22:45:28,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:28,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:28,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:28,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:28,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:28,730 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:28,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:28,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:28,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:28,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:28,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 87675489, now seen corresponding path program 1 times [2025-02-17 22:45:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:28,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019474454] [2025-02-17 22:45:28,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:28,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:28,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:28,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:28,742 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:28,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:28,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:28,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:28,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:28,765 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:28,765 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:28,765 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:28,765 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:28,765 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:28,765 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,765 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:28,765 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:28,765 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:28,765 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:28,765 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:28,766 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:28,792 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:28,792 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:28,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:45:28,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:28,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:28,814 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 [2025-02-17 22:45:28,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:45:28,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:28,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:28,887 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:28,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:45:28,892 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:28,892 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:28,892 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:28,892 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:28,892 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:28,892 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,892 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:28,892 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:28,892 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:28,892 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:28,892 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:28,893 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:28,916 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:28,917 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:28,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:45:28,922 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:28,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:28,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:28,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:28,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:28,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:28,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:28,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:28,937 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:28,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:28,939 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:28,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:28,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:28,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:45:28,943 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:28,944 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:28,944 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:28,944 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:45:28,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:28,951 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:28,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:28,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:28,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:28,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:28,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:28,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:28,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:28,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:28,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:28,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:28,980 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:28,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:28,993 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:28,993 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 132 states and 302 transitions. cyclomatic complexity: 200 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 132 states and 302 transitions. cyclomatic complexity: 200. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 331 states and 811 transitions. Complement of second has 6 states. [2025-02-17 22:45:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-02-17 22:45:29,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 63 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:29,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 63 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:29,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 63 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:45:29,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331 states and 811 transitions. [2025-02-17 22:45:29,068 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 43 [2025-02-17 22:45:29,069 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331 states to 197 states and 467 transitions. [2025-02-17 22:45:29,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 96 [2025-02-17 22:45:29,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2025-02-17 22:45:29,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 197 states and 467 transitions. [2025-02-17 22:45:29,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:29,070 INFO L218 hiAutomatonCegarLoop]: Abstraction has 197 states and 467 transitions. [2025-02-17 22:45:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states and 467 transitions. [2025-02-17 22:45:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 177. [2025-02-17 22:45:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 2.406779661016949) internal successors, (426), 176 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 426 transitions. [2025-02-17 22:45:29,079 INFO L240 hiAutomatonCegarLoop]: Abstraction has 177 states and 426 transitions. [2025-02-17 22:45:29,079 INFO L432 stractBuchiCegarLoop]: Abstraction has 177 states and 426 transitions. [2025-02-17 22:45:29,079 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:29,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 426 transitions. [2025-02-17 22:45:29,081 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 43 [2025-02-17 22:45:29,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:29,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:29,081 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:45:29,081 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:29,082 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[66] L22-->L27: Formula: (<= v_z_3 (+ v_x4_4 v_x1_4)) InVars {x4=v_x4_4, x1=v_x1_4, z=v_z_3} OutVars{x4=v_x4_4, x1=v_x1_4, z=v_z_3} AuxVars[] AssignedVars[]" "[68] L27-->L28: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[70] L28-->L29-1: Formula: (<= 2 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-02-17 22:45:29,082 INFO L754 eck$LassoCheckResult]: Loop: "[73] L29-1-->L31: Formula: (< (+ v_x5_2 v_x3_2) v_z_4) InVars {x5=v_x5_2, x3=v_x3_2, z=v_z_4} OutVars{x5=v_x5_2, x3=v_x3_2, z=v_z_4} AuxVars[] AssignedVars[]" "[75] L31-->L32: Formula: (= (+ v_x3_4 1) v_x3_3) InVars {x3=v_x3_4} OutVars{x3=v_x3_3} AuxVars[] AssignedVars[x3]" "[76] L32-->L29-1: Formula: (= v_x5_3 (+ v_x5_4 1)) InVars {x5=v_x5_4} OutVars{x5=v_x5_3} AuxVars[] AssignedVars[x5]" [2025-02-17 22:45:29,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash 87651144, now seen corresponding path program 1 times [2025-02-17 22:45:29,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:29,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213854383] [2025-02-17 22:45:29,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:29,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:29,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:29,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:29,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:29,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213854383] [2025-02-17 22:45:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213854383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:29,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:45:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839903861] [2025-02-17 22:45:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:29,141 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:45:29,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash 102345, now seen corresponding path program 1 times [2025-02-17 22:45:29,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:29,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074009535] [2025-02-17 22:45:29,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:29,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:29,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:29,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,145 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:29,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:29,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:29,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:29,170 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:29,171 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:29,171 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:29,171 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:29,171 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:29,171 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,171 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:29,171 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:29,171 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:29,171 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:29,171 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:29,171 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:29,195 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:29,195 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:29,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:45:29,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:29,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:29,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:45:29,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:45:29,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:29,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:29,334 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:29,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:45:29,339 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:29,339 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:29,339 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:29,339 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:29,339 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:29,339 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,339 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:29,339 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:29,339 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:29,339 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:29,339 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:29,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:29,363 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:29,364 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:45:29,369 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:29,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:29,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:29,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:29,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:29,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:29,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:29,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:29,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:29,387 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:29,387 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:29,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,389 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:45:29,392 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:29,392 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:29,392 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:29,393 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z, x5) = -1*x3 + 1*z - 1*x5 Supporting invariants [] [2025-02-17 22:45:29,398 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 [2025-02-17 22:45:29,398 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:29,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:29,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:29,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:29,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:29,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:29,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:29,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:29,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:29,425 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:45:29,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:29,451 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:45:29,451 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 177 states and 426 transitions. cyclomatic complexity: 281 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,509 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 177 states and 426 transitions. cyclomatic complexity: 281. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 366 states and 924 transitions. Complement of second has 6 states. [2025-02-17 22:45:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-02-17 22:45:29,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:45:29,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:45:29,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 59 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:45:29,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 924 transitions. [2025-02-17 22:45:29,517 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 24 [2025-02-17 22:45:29,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 264 states and 677 transitions. [2025-02-17 22:45:29,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2025-02-17 22:45:29,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2025-02-17 22:45:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 264 states and 677 transitions. [2025-02-17 22:45:29,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:29,522 INFO L218 hiAutomatonCegarLoop]: Abstraction has 264 states and 677 transitions. [2025-02-17 22:45:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states and 677 transitions. [2025-02-17 22:45:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 230. [2025-02-17 22:45:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 230 states have (on average 2.617391304347826) internal successors, (602), 229 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 602 transitions. [2025-02-17 22:45:29,530 INFO L240 hiAutomatonCegarLoop]: Abstraction has 230 states and 602 transitions. [2025-02-17 22:45:29,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:29,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:45:29,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:45:29,533 INFO L87 Difference]: Start difference. First operand 230 states and 602 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:29,555 INFO L93 Difference]: Finished difference Result 92 states and 213 transitions. [2025-02-17 22:45:29,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 213 transitions. [2025-02-17 22:45:29,556 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 14 [2025-02-17 22:45:29,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 92 states and 213 transitions. [2025-02-17 22:45:29,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2025-02-17 22:45:29,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2025-02-17 22:45:29,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 213 transitions. [2025-02-17 22:45:29,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:29,557 INFO L218 hiAutomatonCegarLoop]: Abstraction has 92 states and 213 transitions. [2025-02-17 22:45:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 213 transitions. [2025-02-17 22:45:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-02-17 22:45:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 92 states have (on average 2.3152173913043477) internal successors, (213), 91 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 213 transitions. [2025-02-17 22:45:29,566 INFO L240 hiAutomatonCegarLoop]: Abstraction has 92 states and 213 transitions. [2025-02-17 22:45:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:45:29,567 INFO L432 stractBuchiCegarLoop]: Abstraction has 92 states and 213 transitions. [2025-02-17 22:45:29,567 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:45:29,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 92 states and 213 transitions. [2025-02-17 22:45:29,568 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 14 [2025-02-17 22:45:29,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:29,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:29,568 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:45:29,568 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:29,568 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[66] L22-->L27: Formula: (<= v_z_3 (+ v_x4_4 v_x1_4)) InVars {x4=v_x4_4, x1=v_x1_4, z=v_z_3} OutVars{x4=v_x4_4, x1=v_x1_4, z=v_z_3} AuxVars[] AssignedVars[]" "[68] L27-->L28: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[91] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[77] L39-->L43: Formula: (<= v_z_7 v_x3_8) InVars {x3=v_x3_8, z=v_z_7} OutVars{x3=v_x3_8, z=v_z_7} AuxVars[] AssignedVars[]" "[79] L43-->L44: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[81] L44-->L45-1: Formula: (<= 2 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-02-17 22:45:29,568 INFO L754 eck$LassoCheckResult]: Loop: "[83] L45-1-->L47: Formula: (< v_x1_6 v_z_8) InVars {x1=v_x1_6, z=v_z_8} OutVars{x1=v_x1_6, z=v_z_8} AuxVars[] AssignedVars[]" "[85] L47-->L45-1: Formula: (= v_x1_7 (+ v_x1_8 1)) InVars {x1=v_x1_8} OutVars{x1=v_x1_7} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:29,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash -124182926, now seen corresponding path program 1 times [2025-02-17 22:45:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965909034] [2025-02-17 22:45:29,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:29,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:45:29,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:45:29,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,576 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:29,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:45:29,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:45:29,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:29,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 3619, now seen corresponding path program 1 times [2025-02-17 22:45:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952050880] [2025-02-17 22:45:29,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:29,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:29,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:29,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,590 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:29,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:29,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:29,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:29,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash 919295060, now seen corresponding path program 1 times [2025-02-17 22:45:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:29,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892049305] [2025-02-17 22:45:29,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:29,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:45:29,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:45:29,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,603 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:29,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:45:29,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:45:29,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:29,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:29,628 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:29,629 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:29,629 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:29,629 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:29,629 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:29,629 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,629 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:29,629 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:29,629 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:45:29,629 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:29,629 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:29,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:29,650 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:29,650 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:29,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,652 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:45:29,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:29,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:29,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:45:29,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,672 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:45:29,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:29,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:29,737 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:29,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:45:29,741 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:29,741 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:29,741 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:29,741 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:29,741 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:29,741 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,741 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:29,741 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:29,741 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:45:29,741 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:29,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:29,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:29,757 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:29,757 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:29,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,759 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:45:29,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:29,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:29,771 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:29,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:29,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:29,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:29,772 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:29,772 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:29,774 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:29,777 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:29,777 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:29,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:29,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:29,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:29,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:45:29,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:29,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:29,782 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:29,782 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:45:29,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:29,787 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:29,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:29,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:45:29,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:45:29,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:29,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:29,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:29,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:29,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:29,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:29,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:29,819 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:29,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:29,830 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:29,830 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 92 states and 213 transitions. cyclomatic complexity: 139 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:29,858 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 [2025-02-17 22:45:29,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:45:29,871 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 92 states and 213 transitions. cyclomatic complexity: 139. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 157 states and 370 transitions. Complement of second has 6 states. [2025-02-17 22:45:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2025-02-17 22:45:29,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:45:29,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-17 22:45:29,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 8 letters. Loop has 4 letters. [2025-02-17 22:45:29,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:29,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 370 transitions. [2025-02-17 22:45:29,875 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:29,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 0 states and 0 transitions. [2025-02-17 22:45:29,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:29,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:29,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:29,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:29,876 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:29,876 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:29,876 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:29,876 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:45:29,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:29,876 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:29,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:29,884 INFO L201 PluginConnector]: Adding new model c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:29 BoogieIcfgContainer [2025-02-17 22:45:29,884 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:29,885 INFO L158 Benchmark]: Toolchain (without parser) took 2465.17ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 87.8MB in the beginning and 101.0MB in the end (delta: -13.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:29,885 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.71ms. Allocated memory is still 163.6MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:29,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.97ms. Allocated memory is still 163.6MB. Free memory was 87.8MB in the beginning and 86.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:29,885 INFO L158 Benchmark]: Boogie Preprocessor took 12.59ms. Allocated memory is still 163.6MB. Free memory was 86.5MB in the beginning and 85.9MB in the end (delta: 614.1kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-02-17 22:45:29,886 INFO L158 Benchmark]: RCFGBuilder took 173.41ms. Allocated memory is still 163.6MB. Free memory was 85.9MB in the beginning and 76.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:29,886 INFO L158 Benchmark]: BuchiAutomizer took 2256.62ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 76.7MB in the beginning and 101.0MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:29,886 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 0.71ms. Allocated memory is still 163.6MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.97ms. Allocated memory is still 163.6MB. Free memory was 87.8MB in the beginning and 86.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 12.59ms. Allocated memory is still 163.6MB. Free memory was 86.5MB in the beginning and 85.9MB in the end (delta: 614.1kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 173.41ms. Allocated memory is still 163.6MB. Free memory was 85.9MB in the beginning and 76.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2256.62ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 76.7MB in the beginning and 101.0MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x4 + -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x5 + -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 74 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 207 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 110 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 81ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:45:29,898 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...