/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:51,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:51,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:51,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:51,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:51,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:51,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:51,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:51,230 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:51,230 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:51,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:51,231 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:51,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:51,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:51,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:51,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:51,233 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:51,233 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:51,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:51,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:51,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:51,452 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:51,452 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:51,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl [2025-04-26 16:24:51,454 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_8.c.bpl' [2025-04-26 16:24:51,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:51,473 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:51,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:51,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:51,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:51,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,508 INFO L138 Inliner]: procedures = 9, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:51,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:51,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:51,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:51,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:51,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,518 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:51,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:51,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:51,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:51,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/1) ... [2025-04-26 16:24:51,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:51,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:51,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:51,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:24:51,581 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:51,581 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-04-26 16:24:51,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2025-04-26 16:24:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2025-04-26 16:24:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2025-04-26 16:24:51,583 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:51,621 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:51,623 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:51,715 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:51,715 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:51,722 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:51,723 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:51,723 INFO L201 PluginConnector]: Adding new model indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:51 BoogieIcfgContainer [2025-04-26 16:24:51,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:51,724 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:51,724 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:51,728 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:51,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:51,728 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:51" (1/2) ... [2025-04-26 16:24:51,729 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47a88159 and model type indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:51, skipping insertion in model container [2025-04-26 16:24:51,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:51,729 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:51" (2/2) ... [2025-04-26 16:24:51,730 INFO L376 chiAutomizerObserver]: Analyzing ICFG indep_loops_8.c.bpl [2025-04-26 16:24:51,795 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-26 16:24:51,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 65 transitions, 186 flow [2025-04-26 16:24:51,844 INFO L116 PetriNetUnfolderBase]: 8/49 cut-off events. [2025-04-26 16:24:51,846 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-26 16:24:51,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 49 events. 8/49 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2025-04-26 16:24:51,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 65 transitions, 186 flow [2025-04-26 16:24:51,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 49 transitions, 146 flow [2025-04-26 16:24:51,854 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 66 places, 49 transitions, 146 flow [2025-04-26 16:24:51,861 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:51,861 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:51,862 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:51,862 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:51,862 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:51,862 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:51,862 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:51,862 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:51,863 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:25:02,301 INFO L131 ngComponentsAnalysis]: Automaton has 12355 accepting balls. 108460 [2025-04-26 16:25:02,302 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:02,302 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:02,310 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:25:02,310 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:02,310 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:25:02,310 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 109226 states, but on-demand construction may add more states [2025-04-26 16:25:05,643 INFO L131 ngComponentsAnalysis]: Automaton has 12355 accepting balls. 108460 [2025-04-26 16:25:05,643 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:05,643 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:05,649 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:25:05,649 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:05,653 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:25:05,653 INFO L754 eck$LassoCheckResult]: Loop: "[123] L38-->L40: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[125] L40-->L38: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:25:05,657 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 187, now seen corresponding path program 1 times [2025-04-26 16:25:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:05,662 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000210139] [2025-04-26 16:25:05,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:05,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:25:05,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:25:05,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,724 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:05,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:25:05,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:25:05,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:05,748 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 4899, now seen corresponding path program 1 times [2025-04-26 16:25:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:05,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820637441] [2025-04-26 16:25:05,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:05,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:05,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:05,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,758 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:05,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:05,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:05,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:05,766 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 183645, now seen corresponding path program 1 times [2025-04-26 16:25:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:05,767 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903482595] [2025-04-26 16:25:05,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:05,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:05,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:05,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,774 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:05,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:05,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:05,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:05,831 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:05,832 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:05,833 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:05,833 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:05,833 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:05,833 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,833 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:05,833 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:05,833 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:05,834 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:05,834 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:05,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:05,880 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:05,880 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:05,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:05,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:25:05,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:05,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:05,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:05,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:05,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:25:05,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:05,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:05,985 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:05,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:05,990 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:05,990 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:05,990 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:05,990 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:05,990 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:05,990 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,990 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:05,990 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:05,990 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:05,990 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:05,990 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:05,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:06,018 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:06,021 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:06,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:06,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:25:06,026 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:06,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:06,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:06,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:06,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:06,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:06,041 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:06,041 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:06,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:06,047 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:06,048 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:06,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:06,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:06,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:25:06,054 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:06,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:25:06,057 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:06,058 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:06,058 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:25:06,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:06,067 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:06,085 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:06,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:25:06,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:25:06,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:06,099 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:06,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:06,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:06,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:06,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:06,115 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:06,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:06,276 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:25:06,283 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 109226 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:14,107 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 109226 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 305829 states and 2605050 transitions. Complement of second has 6 states. [2025-04-26 16:25:14,109 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2025-04-26 16:25:14,118 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 121 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 16:25:14,119 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:14,119 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 121 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:25:14,119 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:14,119 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 121 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 16:25:14,120 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:14,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 305829 states and 2605050 transitions. [2025-04-26 16:25:23,644 INFO L131 ngComponentsAnalysis]: Automaton has 15125 accepting balls. 107950 [2025-04-26 16:25:32,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 305829 states to 238757 states and 2056781 transitions. [2025-04-26 16:25:32,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108457 [2025-04-26 16:25:34,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173607 [2025-04-26 16:25:34,357 INFO L74 IsDeterministic]: Start isDeterministic. Operand 238757 states and 2056781 transitions. [2025-04-26 16:25:34,358 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:34,359 INFO L218 hiAutomatonCegarLoop]: Abstraction has 238757 states and 2056781 transitions. [2025-04-26 16:25:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238757 states and 2056781 transitions. [2025-04-26 16:25:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238757 to 173609. [2025-04-26 16:25:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173609 states, 173609 states have (on average 8.876458017729496) internal successors, (in total 1541033), 173608 states have internal predecessors, (1541033), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173609 states to 173609 states and 1541033 transitions. [2025-04-26 16:25:47,360 INFO L240 hiAutomatonCegarLoop]: Abstraction has 173609 states and 1541033 transitions. [2025-04-26 16:25:47,360 INFO L438 stractBuchiCegarLoop]: Abstraction has 173609 states and 1541033 transitions. [2025-04-26 16:25:47,360 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:25:47,360 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173609 states and 1541033 transitions. [2025-04-26 16:25:50,505 INFO L131 ngComponentsAnalysis]: Automaton has 15125 accepting balls. 107950 [2025-04-26 16:25:50,505 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:50,505 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:50,513 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:50,513 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:50,514 INFO L752 eck$LassoCheckResult]: Stem: "[156] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[159] L17-->L47: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:25:50,514 INFO L754 eck$LassoCheckResult]: Loop: "[127] L47-->L49: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[129] L49-->L47: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 16:25:50,515 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash 5956, now seen corresponding path program 1 times [2025-04-26 16:25:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:50,515 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141765588] [2025-04-26 16:25:50,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:50,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:50,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:50,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:50,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:50,520 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:50,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:50,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:50,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:50,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:50,526 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash 5027, now seen corresponding path program 1 times [2025-04-26 16:25:50,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:50,526 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184301059] [2025-04-26 16:25:50,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:50,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:50,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:50,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:50,533 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:50,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:50,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:50,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:50,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:50,538 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:50,538 INFO L85 PathProgramCache]: Analyzing trace with hash 5727782, now seen corresponding path program 1 times [2025-04-26 16:25:50,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:50,538 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590786283] [2025-04-26 16:25:50,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:50,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:50,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:50,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:50,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:50,543 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:50,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:50,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:50,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:50,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:50,560 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:50,561 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:50,561 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:50,561 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:50,561 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:50,561 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,561 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:50,561 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:50,561 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:50,561 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:50,561 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:50,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:50,579 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:50,579 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:50,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:50,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:50,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:25:50,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:50,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:50,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:25:50,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:50,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:50,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:25:50,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:50,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:50,672 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:50,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:25:50,676 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:50,677 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:50,677 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:50,677 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:50,677 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:50,677 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,677 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:50,677 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:50,677 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:50,677 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:50,677 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:50,678 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:50,695 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:50,695 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:50,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:50,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:50,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:25:50,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:50,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:50,712 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:50,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:50,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:50,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:50,713 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:50,713 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:50,718 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:50,722 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:50,722 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:50,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:50,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:50,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:50,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:25:50,726 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:50,729 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:50,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:50,732 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:50,732 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:50,732 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 16:25:50,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:50,741 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:50,754 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:50,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:50,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:50,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:50,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:50,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:50,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:50,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:50,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:50,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:50,773 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:50,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:50,786 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:25:50,786 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 173609 states and 1541033 transitions. cyclomatic complexity: 1385701 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0)