/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/bb4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:24,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:24,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:24,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:24,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:24,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:24,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:24,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:24,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:24,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:24,912 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:24,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:24,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:24,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:24,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:24,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:24,913 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:24,914 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:25,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:25,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:25,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:25,139 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:25,140 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:25,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/bb4.c.bpl [2025-02-17 22:45:25,141 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/bb4.c.bpl' [2025-02-17 22:45:25,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:25,158 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:25,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:25,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:25,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:25,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,177 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:25,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:25,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:25,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:25,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:25,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,186 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:25,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:25,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:25,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:25,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,221 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 22:45:25,224 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 22:45:25,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:25,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:25,245 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:25,246 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 22:45:25,282 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:25,283 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:25,336 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:25,336 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:25,347 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:25,347 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:25,348 INFO L201 PluginConnector]: Adding new model bb4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:25 BoogieIcfgContainer [2025-02-17 22:45:25,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:25,348 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:25,348 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:25,354 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:25,354 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:25,354 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/2) ... [2025-02-17 22:45:25,355 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38b47f4b and model type bb4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:25, skipping insertion in model container [2025-02-17 22:45:25,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:25,356 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:25" (2/2) ... [2025-02-17 22:45:25,357 INFO L363 chiAutomizerObserver]: Analyzing ICFG bb4.c.bpl [2025-02-17 22:45:25,411 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:45:25,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 24 transitions, 62 flow [2025-02-17 22:45:25,465 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2025-02-17 22:45:25,468 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:45:25,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 4/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 30 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2025-02-17 22:45:25,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 24 transitions, 62 flow [2025-02-17 22:45:25,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 20 transitions, 52 flow [2025-02-17 22:45:25,487 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:25,487 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:25,487 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:25,487 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:25,487 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:25,487 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:25,487 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:25,487 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:25,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:25,521 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 40 [2025-02-17 22:45:25,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:25,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:25,524 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:25,524 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:25,524 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:25,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 51 states, but on-demand construction may add more states [2025-02-17 22:45:25,528 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 40 [2025-02-17 22:45:25,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:25,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:25,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:25,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:25,534 INFO L752 eck$LassoCheckResult]: Stem: "[50] $Ultimate##0-->L13: Formula: (= v_x2_1 0) InVars {} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[70] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:25,534 INFO L754 eck$LassoCheckResult]: Loop: "[55] L22-->L24: 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[]" "[58] L24-->L22: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:25,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2581, now seen corresponding path program 1 times [2025-02-17 22:45:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:25,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990249251] [2025-02-17 22:45:25,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:25,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:25,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:25,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:25,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,589 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:25,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:25,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:25,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:25,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2724, now seen corresponding path program 1 times [2025-02-17 22:45:25,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403245099] [2025-02-17 22:45:25,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:25,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:25,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:25,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:25,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,612 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:25,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:25,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:25,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:25,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2482104, now seen corresponding path program 1 times [2025-02-17 22:45:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078778398] [2025-02-17 22:45:25,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:25,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:25,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:25,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,621 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:25,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:25,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:25,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:25,665 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:25,666 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:25,666 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:25,666 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:25,666 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:25,666 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,666 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:25,666 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:25,666 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:25,666 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:25,666 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:25,676 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:25,714 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:25,714 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,717 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 22:45:25,718 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 22:45:25,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:25,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:25,738 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 22:45:25,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,740 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 22:45:25,741 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 22:45:25,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:25,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:25,815 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:25,819 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 22:45:25,819 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:25,819 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:25,819 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:25,819 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:25,819 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:25,819 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,819 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:25,819 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:25,819 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:25,819 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:25,819 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:25,820 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:25,840 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:25,842 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:25,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,845 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 22:45:25,846 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 22:45:25,847 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 22:45:25,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:25,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:25,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:25,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:25,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:25,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:25,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:25,865 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:25,871 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:25,871 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:25,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,876 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 22:45:25,878 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 22:45:25,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:25,879 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:25,879 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:25,879 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:45:25,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:25,887 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:25,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:25,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:25,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:25,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:25,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:25,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:25,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:25,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:25,936 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:25,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:25,960 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 22:45:25,977 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 22:45:25,980 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 51 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:26,005 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:45:26,008 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 22:45:26,102 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 51 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 186 states and 433 transitions. Complement of second has 7 states. [2025-02-17 22:45:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2025-02-17 22:45:26,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 66 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:26,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 66 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:26,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 66 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:26,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,129 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 433 transitions. [2025-02-17 22:45:26,134 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 26 [2025-02-17 22:45:26,139 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 92 states and 224 transitions. [2025-02-17 22:45:26,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2025-02-17 22:45:26,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2025-02-17 22:45:26,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 224 transitions. [2025-02-17 22:45:26,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:26,141 INFO L218 hiAutomatonCegarLoop]: Abstraction has 92 states and 224 transitions. [2025-02-17 22:45:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 224 transitions. [2025-02-17 22:45:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2025-02-17 22:45:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 2.5) internal successors, (185), 73 states have internal predecessors, (185), 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 22:45:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 185 transitions. [2025-02-17 22:45:26,187 INFO L240 hiAutomatonCegarLoop]: Abstraction has 74 states and 185 transitions. [2025-02-17 22:45:26,187 INFO L432 stractBuchiCegarLoop]: Abstraction has 74 states and 185 transitions. [2025-02-17 22:45:26,187 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:26,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 185 transitions. [2025-02-17 22:45:26,188 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 26 [2025-02-17 22:45:26,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:26,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:26,189 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:26,189 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:26,189 INFO L752 eck$LassoCheckResult]: Stem: "[50] $Ultimate##0-->L13: Formula: (= v_x2_1 0) InVars {} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[70] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[54] L22-->L26-1: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" [2025-02-17 22:45:26,189 INFO L754 eck$LassoCheckResult]: Loop: "[57] L26-1-->L28: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[60] L28-->L26-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:26,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 80065, now seen corresponding path program 1 times [2025-02-17 22:45:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501427691] [2025-02-17 22:45:26,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,198 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2788, now seen corresponding path program 1 times [2025-02-17 22:45:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842232149] [2025-02-17 22:45:26,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,205 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash 76944292, now seen corresponding path program 1 times [2025-02-17 22:45:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879073207] [2025-02-17 22:45:26,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:26,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:26,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,212 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:26,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:26,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,229 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:26,229 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:26,230 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:26,230 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:26,230 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:26,230 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,230 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:26,230 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:26,230 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:26,230 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:26,230 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:26,230 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:26,247 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:26,247 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:26,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,249 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 22:45:26,251 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 22:45:26,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:26,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:26,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:45:26,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,269 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 22:45:26,270 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 22:45:26,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:26,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:26,336 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:26,340 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 22:45:26,340 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:26,341 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:26,341 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:26,341 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:26,341 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:26,341 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,341 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:26,341 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:26,341 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:26,341 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:26,341 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:26,342 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:26,360 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:26,360 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:26,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,363 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 22:45:26,364 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 22:45:26,365 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 22:45:26,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:26,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:26,375 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:26,375 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:26,375 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:26,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:26,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:26,381 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:26,384 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:26,385 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:26,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,386 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 22:45:26,388 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 22:45:26,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:26,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:26,389 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:26,389 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:45:26,395 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 22:45:26,396 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:26,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,424 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:26,441 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:26,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 185 transitions. cyclomatic complexity: 132 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 22:45:26,498 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 185 transitions. cyclomatic complexity: 132. 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 201 states and 477 transitions. Complement of second has 7 states. [2025-02-17 22:45:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:26,499 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 22:45:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2025-02-17 22:45:26,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 62 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:26,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 62 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:26,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 62 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:45:26,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 477 transitions. [2025-02-17 22:45:26,506 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2025-02-17 22:45:26,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 16 states and 35 transitions. [2025-02-17 22:45:26,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-17 22:45:26,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2025-02-17 22:45:26,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 35 transitions. [2025-02-17 22:45:26,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:26,507 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 35 transitions. [2025-02-17 22:45:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 35 transitions. [2025-02-17 22:45:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-17 22:45:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 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 22:45:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 35 transitions. [2025-02-17 22:45:26,508 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 35 transitions. [2025-02-17 22:45:26,508 INFO L432 stractBuchiCegarLoop]: Abstraction has 16 states and 35 transitions. [2025-02-17 22:45:26,508 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:26,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 35 transitions. [2025-02-17 22:45:26,509 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2025-02-17 22:45:26,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:26,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:26,509 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:26,509 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:26,509 INFO L752 eck$LassoCheckResult]: Stem: "[50] $Ultimate##0-->L13: Formula: (= v_x2_1 0) InVars {} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[70] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[73] L13-1-->L35: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:26,511 INFO L754 eck$LassoCheckResult]: Loop: "[62] L35-->L37: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[65] L37-->L35: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:26,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash 80084, now seen corresponding path program 1 times [2025-02-17 22:45:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935436677] [2025-02-17 22:45:26,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,521 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2948, now seen corresponding path program 1 times [2025-02-17 22:45:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140898121] [2025-02-17 22:45:26,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,526 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash 76962711, now seen corresponding path program 1 times [2025-02-17 22:45:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454312989] [2025-02-17 22:45:26,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:26,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:26,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,535 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:26,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:26,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,552 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:26,552 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:26,552 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:26,552 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:26,552 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:26,552 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,552 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:26,552 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:26,552 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:26,552 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:26,552 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:26,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:26,568 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:26,568 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:26,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,570 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 22:45:26,572 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 22:45:26,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:26,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:26,589 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 22:45:26,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,591 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 22:45:26,592 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 22:45:26,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:26,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:26,669 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:26,672 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 22:45:26,673 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:26,673 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:26,673 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:26,673 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:26,673 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:26,673 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,673 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:26,673 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:26,673 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:26,673 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:26,673 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:26,674 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:26,689 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:26,689 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,712 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 22:45:26,713 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 22:45:26,714 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 22:45:26,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:26,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:26,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:26,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:26,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:26,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:26,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:26,738 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:26,740 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:26,740 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,743 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 22:45:26,744 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 22:45:26,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:26,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:26,744 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:26,745 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:45:26,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:45:26,750 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:26,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,782 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,795 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 22:45:26,796 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 22:45:26,796 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 35 transitions. cyclomatic complexity: 23 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 22:45:26,821 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 35 transitions. cyclomatic complexity: 23. 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 34 states and 69 transitions. Complement of second has 6 states. [2025-02-17 22:45:26,822 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 22:45:26,823 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 22:45:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2025-02-17 22:45:26,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:26,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:26,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:45:26,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 69 transitions. [2025-02-17 22:45:26,824 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:26,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 0 states and 0 transitions. [2025-02-17 22:45:26,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:26,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:26,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:26,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:26,824 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:26,824 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:26,824 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:26,824 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:45:26,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:26,825 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:26,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:26,834 INFO L201 PluginConnector]: Adding new model bb4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:26 BoogieIcfgContainer [2025-02-17 22:45:26,834 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:26,834 INFO L158 Benchmark]: Toolchain (without parser) took 1676.84ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 87.8MB in the beginning and 83.4MB in the end (delta: 4.3MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. [2025-02-17 22:45:26,835 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:26,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.72ms. Allocated memory is still 159.4MB. Free memory was 87.5MB in the beginning and 86.4MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-02-17 22:45:26,835 INFO L158 Benchmark]: Boogie Preprocessor took 12.08ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 85.6MB in the end (delta: 856.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:26,835 INFO L158 Benchmark]: RCFGBuilder took 154.99ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 77.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:26,835 INFO L158 Benchmark]: BuchiAutomizer took 1485.57ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 77.2MB in the beginning and 83.4MB in the end (delta: -6.2MB). Peak memory consumption was 1.2MB. Max. memory is 8.0GB. [2025-02-17 22:45:26,838 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 0.18ms. Allocated memory is still 159.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.72ms. Allocated memory is still 159.4MB. Free memory was 87.5MB in the beginning and 86.4MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.08ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 85.6MB in the end (delta: 856.8kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 154.99ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 77.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1485.57ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 77.2MB in the beginning and 83.4MB in the end (delta: -6.2MB). Peak memory consumption was 1.2MB. 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 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 32 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s 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 22:45:26,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:45:27,047 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 22:45:27,250 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...