/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/3_thr/m5.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:38,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:38,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:38,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:38,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:38,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:38,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:38,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:38,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:38,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:38,914 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:38,914 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:38,914 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:38,914 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:38,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:38,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:38,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:38,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:38,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:38,916 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:38,916 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:39,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:39,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:39,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:39,152 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:39,153 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:39,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/m5.c.bpl [2025-04-26 16:24:39,156 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/m5.c.bpl' [2025-04-26 16:24:39,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:39,171 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:39,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:39,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:39,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:39,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,203 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:39,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:39,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:39,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:39,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:39,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,214 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:39,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:39,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:39,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:39,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:39,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,256 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 16:24:39,260 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 16:24:39,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:39,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:39,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:39,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:39,278 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 16:24:39,311 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:39,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:39,372 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:39,372 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:39,379 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:39,379 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:39,379 INFO L201 PluginConnector]: Adding new model m5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:39 BoogieIcfgContainer [2025-04-26 16:24:39,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:39,380 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:39,380 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:39,384 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:39,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:39,384 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m5.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/2) ... [2025-04-26 16:24:39,385 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a5c3d21 and model type m5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:39, skipping insertion in model container [2025-04-26 16:24:39,385 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:39,385 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:39" (2/2) ... [2025-04-26 16:24:39,386 INFO L376 chiAutomizerObserver]: Analyzing ICFG m5.c.bpl [2025-04-26 16:24:39,436 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:24:39,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 77 flow [2025-04-26 16:24:39,496 INFO L116 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-04-26 16:24:39,499 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:24:39,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-04-26 16:24:39,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 28 transitions, 77 flow [2025-04-26 16:24:39,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 62 flow [2025-04-26 16:24:39,512 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 29 places, 22 transitions, 62 flow [2025-04-26 16:24:39,521 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:39,521 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:39,521 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:39,521 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:39,522 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:39,522 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:39,522 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:39,522 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:39,523 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:39,592 INFO L131 ngComponentsAnalysis]: Automaton has 45 accepting balls. 116 [2025-04-26 16:24:39,593 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:39,593 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:39,596 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:39,596 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:39,596 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:39,597 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 157 states, but on-demand construction may add more states [2025-04-26 16:24:39,607 INFO L131 ngComponentsAnalysis]: Automaton has 45 accepting balls. 116 [2025-04-26 16:24:39,607 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:39,607 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:39,608 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:39,608 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:39,615 INFO L752 eck$LassoCheckResult]: Stem: "[46] $Ultimate##0-->L12: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[70] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:39,615 INFO L754 eck$LassoCheckResult]: Loop: "[55] L23-->L25: 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[]" "[57] L25-->L23: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:39,619 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2457, now seen corresponding path program 1 times [2025-04-26 16:24:39,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:39,625 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327269474] [2025-04-26 16:24:39,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:39,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:39,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:39,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:39,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,676 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:39,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:39,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:39,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:39,692 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2723, now seen corresponding path program 1 times [2025-04-26 16:24:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:39,692 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890577706] [2025-04-26 16:24:39,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:39,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:39,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:39,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:39,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:39,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:39,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:39,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:39,703 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2362939, now seen corresponding path program 1 times [2025-04-26 16:24:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:39,703 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500436653] [2025-04-26 16:24:39,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:39,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:39,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:39,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,708 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:39,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:39,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:39,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:39,773 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:39,774 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:39,775 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:39,775 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:39,776 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:39,776 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,776 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:39,776 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:39,776 INFO L132 ssoRankerPreferences]: Filename of dumped script: m5.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:39,776 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:39,776 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:39,787 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,834 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:39,835 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:39,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:39,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:24:39,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:39,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-04-26 16:24:39,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:39,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:24:39,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:39,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,942 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:39,946 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 16:24:39,947 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:39,947 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:39,947 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:39,947 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:39,947 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:39,947 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,947 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:39,947 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:39,947 INFO L132 ssoRankerPreferences]: Filename of dumped script: m5.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:39,947 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:39,947 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:39,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,973 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:39,976 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:39,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:24:39,982 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:39,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:39,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:39,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:39,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:39,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:39,997 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:39,997 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:40,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:40,008 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:40,008 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:40,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:24:40,015 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:40,018 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 [2025-04-26 16:24:40,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,019 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:40,020 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:40,020 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:24:40,027 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 16:24:40,030 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:40,052 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,076 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:40,167 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:40,169 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 157 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,321 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 157 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 540 states and 1662 transitions. Complement of second has 7 states. [2025-04-26 16:24:40,322 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 16:24:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2025-04-26 16:24:40,333 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:40,334 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,334 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:40,334 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,334 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:40,334 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 540 states and 1662 transitions. [2025-04-26 16:24:40,354 INFO L131 ngComponentsAnalysis]: Automaton has 67 accepting balls. 158 [2025-04-26 16:24:40,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 540 states to 364 states and 1138 transitions. [2025-04-26 16:24:40,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 229 [2025-04-26 16:24:40,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 299 [2025-04-26 16:24:40,368 INFO L74 IsDeterministic]: Start isDeterministic. Operand 364 states and 1138 transitions. [2025-04-26 16:24:40,368 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:40,368 INFO L218 hiAutomatonCegarLoop]: Abstraction has 364 states and 1138 transitions. [2025-04-26 16:24:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states and 1138 transitions. [2025-04-26 16:24:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 235. [2025-04-26 16:24:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 235 states have (on average 3.234042553191489) internal successors, (in total 760), 234 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 760 transitions. [2025-04-26 16:24:40,400 INFO L240 hiAutomatonCegarLoop]: Abstraction has 235 states and 760 transitions. [2025-04-26 16:24:40,400 INFO L438 stractBuchiCegarLoop]: Abstraction has 235 states and 760 transitions. [2025-04-26 16:24:40,400 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:40,401 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 760 transitions. [2025-04-26 16:24:40,403 INFO L131 ngComponentsAnalysis]: Automaton has 50 accepting balls. 124 [2025-04-26 16:24:40,403 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:40,403 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:40,403 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:40,403 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:40,404 INFO L752 eck$LassoCheckResult]: Stem: "[46] $Ultimate##0-->L12: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[70] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[73] L12-1-->$Ultimate##0: 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]" "[76] L13-->L43: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:24:40,404 INFO L754 eck$LassoCheckResult]: Loop: "[65] L43-->L45: Formula: (< v_x2_1 v_w_1) InVars {x2=v_x2_1, w=v_w_1} OutVars{x2=v_x2_1, w=v_w_1} AuxVars[] AssignedVars[]" "[67] L45-->L43: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 16:24:40,404 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2363516, now seen corresponding path program 1 times [2025-04-26 16:24:40,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,407 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885181699] [2025-04-26 16:24:40,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,413 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,420 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 3043, now seen corresponding path program 1 times [2025-04-26 16:24:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,420 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596852566] [2025-04-26 16:24:40,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,423 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,429 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2023626338, now seen corresponding path program 1 times [2025-04-26 16:24:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,429 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175382880] [2025-04-26 16:24:40,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:40,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:40,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,433 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:40,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:40,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,451 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,452 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,452 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,452 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,452 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:40,452 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,452 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,452 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,452 INFO L132 ssoRankerPreferences]: Filename of dumped script: m5.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:40,452 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,452 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,469 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,469 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:40,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:24:40,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:40,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:24:40,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:40,494 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,560 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:40,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:24:40,564 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,565 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,565 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,565 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,565 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:40,565 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,565 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,565 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,565 INFO L132 ssoRankerPreferences]: Filename of dumped script: m5.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:40,565 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,565 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,588 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,588 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:40,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,612 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:24:40,614 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:40,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:40,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:40,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:40,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:40,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:40,625 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:40,625 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:40,627 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:40,631 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:40,631 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:40,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:24:40,636 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:40,639 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 16:24:40,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,640 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:40,640 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:40,640 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-04-26 16:24:40,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:24:40,648 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:40,660 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,681 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:40,699 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:40,699 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 235 states and 760 transitions. cyclomatic complexity: 592 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,739 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 235 states and 760 transitions. cyclomatic complexity: 592. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 645 states and 2313 transitions. Complement of second has 6 states. [2025-04-26 16:24:40,740 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 16:24:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-04-26 16:24:40,740 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:40,740 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,740 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:40,740 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,740 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:24:40,741 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 645 states and 2313 transitions. [2025-04-26 16:24:40,747 INFO L131 ngComponentsAnalysis]: Automaton has 34 accepting balls. 78 [2025-04-26 16:24:40,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 645 states to 398 states and 1417 transitions. [2025-04-26 16:24:40,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 175 [2025-04-26 16:24:40,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 252 [2025-04-26 16:24:40,754 INFO L74 IsDeterministic]: Start isDeterministic. Operand 398 states and 1417 transitions. [2025-04-26 16:24:40,754 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:40,754 INFO L218 hiAutomatonCegarLoop]: Abstraction has 398 states and 1417 transitions. [2025-04-26 16:24:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 1417 transitions. [2025-04-26 16:24:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 321. [2025-04-26 16:24:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 321 states have (on average 3.710280373831776) internal successors, (in total 1191), 320 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 1191 transitions. [2025-04-26 16:24:40,772 INFO L240 hiAutomatonCegarLoop]: Abstraction has 321 states and 1191 transitions. [2025-04-26 16:24:40,772 INFO L438 stractBuchiCegarLoop]: Abstraction has 321 states and 1191 transitions. [2025-04-26 16:24:40,772 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:40,772 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 321 states and 1191 transitions. [2025-04-26 16:24:40,774 INFO L131 ngComponentsAnalysis]: Automaton has 34 accepting balls. 78 [2025-04-26 16:24:40,775 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:40,775 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:40,775 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:24:40,775 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:40,776 INFO L752 eck$LassoCheckResult]: Stem: "[46] $Ultimate##0-->L12: Formula: (= v_f_4 0) InVars {} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[70] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[54] L23-->L27: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[73] L12-1-->$Ultimate##0: 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]" "[59] $Ultimate##0-->L34-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 16:24:40,776 INFO L754 eck$LassoCheckResult]: Loop: "[61] L34-1-->L36: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[63] L36-->L34-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:40,776 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash 73250703, now seen corresponding path program 1 times [2025-04-26 16:24:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,777 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772116743] [2025-04-26 16:24:40,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:40,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:40,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:40,813 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772116743] [2025-04-26 16:24:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772116743] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:40,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:24:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583573451] [2025-04-26 16:24:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:40,818 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:24:40,819 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2915, now seen corresponding path program 1 times [2025-04-26 16:24:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,819 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290863332] [2025-04-26 16:24:40,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,822 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,840 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,840 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,840 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,840 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,840 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:40,840 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,840 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,840 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,840 INFO L132 ssoRankerPreferences]: Filename of dumped script: m5.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:40,840 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,840 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,862 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,862 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:40,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:24:40,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:40,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,886 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:24:40,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:40,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,962 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:40,967 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 [2025-04-26 16:24:40,967 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,967 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,967 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,967 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,967 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:40,967 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,967 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,967 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,967 INFO L132 ssoRankerPreferences]: Filename of dumped script: m5.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:40,967 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,967 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,986 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,986 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:24:41,022 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:41,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:41,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:41,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:41,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:41,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:41,033 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:41,033 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:41,035 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:41,036 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:41,036 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:24:41,063 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:41,066 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:41,067 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 [2025-04-26 16:24:41,067 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:41,067 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:41,067 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, x1) = -1*y + 1*x1 Supporting invariants [] [2025-04-26 16:24:41,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:41,073 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:41,087 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:41,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:41,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:41,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:41,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,110 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:41,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:41,125 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:41,125 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 321 states and 1191 transitions. cyclomatic complexity: 940 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,181 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 321 states and 1191 transitions. cyclomatic complexity: 940. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 1061 states and 3846 transitions. Complement of second has 7 states. [2025-04-26 16:24:41,182 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 16:24:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2025-04-26 16:24:41,183 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 51 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:24:41,183 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,183 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 51 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:24:41,183 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,183 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 51 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:24:41,183 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1061 states and 3846 transitions. [2025-04-26 16:24:41,193 INFO L131 ngComponentsAnalysis]: Automaton has 34 accepting balls. 78 [2025-04-26 16:24:41,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1061 states to 579 states and 2044 transitions. [2025-04-26 16:24:41,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2025-04-26 16:24:41,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 256 [2025-04-26 16:24:41,199 INFO L74 IsDeterministic]: Start isDeterministic. Operand 579 states and 2044 transitions. [2025-04-26 16:24:41,200 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:41,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 579 states and 2044 transitions. [2025-04-26 16:24:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states and 2044 transitions. [2025-04-26 16:24:41,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 389. [2025-04-26 16:24:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 389 states have (on average 3.6992287917737787) internal successors, (in total 1439), 388 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1439 transitions. [2025-04-26 16:24:41,218 INFO L240 hiAutomatonCegarLoop]: Abstraction has 389 states and 1439 transitions. [2025-04-26 16:24:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:41,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:41,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:41,221 INFO L87 Difference]: Start difference. First operand 389 states and 1439 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (in total 5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:41,227 INFO L93 Difference]: Finished difference Result 46 states and 104 transitions. [2025-04-26 16:24:41,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 104 transitions. [2025-04-26 16:24:41,228 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:41,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 0 states and 0 transitions. [2025-04-26 16:24:41,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:41,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:41,228 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:41,228 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:41,229 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,229 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,229 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:41,230 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,230 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:41,230 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:41,230 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:41,230 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:41,235 INFO L201 PluginConnector]: Adding new model m5.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:41 BoogieIcfgContainer [2025-04-26 16:24:41,235 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:41,236 INFO L158 Benchmark]: Toolchain (without parser) took 2065.40ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 90.3MB in the beginning and 26.9MB in the end (delta: 63.5MB). Peak memory consumption was 41.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,236 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.75ms. Allocated memory is still 163.6MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.77ms. Allocated memory is still 163.6MB. Free memory was 90.3MB in the beginning and 88.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,237 INFO L158 Benchmark]: Boogie Preprocessor took 23.39ms. Allocated memory is still 163.6MB. Free memory was 88.5MB in the beginning and 87.3MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,237 INFO L158 Benchmark]: RCFGBuilder took 149.14ms. Allocated memory is still 163.6MB. Free memory was 87.3MB in the beginning and 78.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,239 INFO L158 Benchmark]: BuchiAutomizer took 1855.43ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 78.3MB in the beginning and 26.9MB in the end (delta: 51.4MB). Peak memory consumption was 29.1MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,240 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 0.75ms. Allocated memory is still 163.6MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.77ms. Allocated memory is still 163.6MB. Free memory was 90.3MB in the beginning and 88.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 23.39ms. Allocated memory is still 163.6MB. Free memory was 88.5MB in the beginning and 87.3MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 149.14ms. Allocated memory is still 163.6MB. Free memory was 87.3MB in the beginning and 78.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1855.43ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 78.3MB in the beginning and 26.9MB in the end (delta: 51.4MB). Peak memory consumption was 29.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 396 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 79 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 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: 43ms 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: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function w + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function x1 + -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:41,251 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...