/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/seq_loops_part_indep_3.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:43,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:43,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:43,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:43,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:43,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:43,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:43,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:43,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:43,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:43,315 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:43,315 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:43,315 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:43,315 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:43,315 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:43,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:43,316 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:43,317 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:43,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:43,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:43,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:43,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:43,318 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:43,318 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:43,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:43,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:43,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:43,560 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:43,560 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:43,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/seq_loops_part_indep_3.c.bpl [2025-04-26 16:24:43,562 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/seq_loops_part_indep_3.c.bpl' [2025-04-26 16:24:43,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:43,578 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:43,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:43,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:43,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:43,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,614 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:43,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:43,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:43,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:43,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:43,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:43,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:43,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:43,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:43,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/1) ... [2025-04-26 16:24:43,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:43,672 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 16:24:43,675 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 16:24:43,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:43,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:43,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:43,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:43,698 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 16:24:43,737 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:43,738 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:43,837 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:43,837 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:43,848 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:43,848 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:43,850 INFO L201 PluginConnector]: Adding new model seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:43 BoogieIcfgContainer [2025-04-26 16:24:43,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:43,850 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:43,850 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:43,856 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:43,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:43,857 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:43" (1/2) ... [2025-04-26 16:24:43,858 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@396c8032 and model type seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:43, skipping insertion in model container [2025-04-26 16:24:43,858 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:43,858 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:43" (2/2) ... [2025-04-26 16:24:43,859 INFO L376 chiAutomizerObserver]: Analyzing ICFG seq_loops_part_indep_3.c.bpl [2025-04-26 16:24:43,916 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:24:43,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 95 flow [2025-04-26 16:24:43,965 INFO L116 PetriNetUnfolderBase]: 6/31 cut-off events. [2025-04-26 16:24:43,969 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:24:43,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 31 events. 6/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-04-26 16:24:43,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 37 transitions, 95 flow [2025-04-26 16:24:43,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 80 flow [2025-04-26 16:24:43,976 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 35 places, 31 transitions, 80 flow [2025-04-26 16:24:43,984 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:43,984 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:43,984 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:43,984 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:43,984 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:43,985 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:43,985 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:43,985 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:43,986 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:44,089 INFO L131 ngComponentsAnalysis]: Automaton has 84 accepting balls. 435 [2025-04-26 16:24:44,089 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:44,089 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:44,094 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:24:44,094 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:44,094 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:44,094 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 457 states, but on-demand construction may add more states [2025-04-26 16:24:44,105 INFO L131 ngComponentsAnalysis]: Automaton has 84 accepting balls. 435 [2025-04-26 16:24:44,106 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:44,106 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:44,106 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:24:44,106 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:44,110 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:44,110 INFO L754 eck$LassoCheckResult]: Loop: "[84] 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[]" "[87] L25-->L26: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[90] L26-->L23: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 16:24:44,115 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 140, now seen corresponding path program 1 times [2025-04-26 16:24:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:44,121 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397506848] [2025-04-26 16:24:44,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:44,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:24:44,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:24:44,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:44,171 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:44,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:24:44,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:24:44,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:44,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:44,192 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash 113302, now seen corresponding path program 1 times [2025-04-26 16:24:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:44,193 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111743406] [2025-04-26 16:24:44,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:44,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:44,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:44,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:44,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:44,206 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:44,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:44,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:44,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:44,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:44,215 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 4254251, now seen corresponding path program 1 times [2025-04-26 16:24:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:44,218 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259723844] [2025-04-26 16:24:44,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:44,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:44,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:44,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:44,227 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:44,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:44,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:44,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:44,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:44,308 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:44,308 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:44,309 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:44,309 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:44,310 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:44,310 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,310 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:44,310 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:44,310 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:44,310 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:44,311 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:44,321 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:44,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:44,388 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:44,390 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:44,395 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 16:24:44,396 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 16:24:44,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:44,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:44,417 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 16:24:44,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:44,421 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 16:24:44,423 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 16:24:44,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:44,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:44,497 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:44,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:24:44,502 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:44,503 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:44,503 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:44,503 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:44,503 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:44,503 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,503 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:44,503 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:44,503 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:44,503 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:44,503 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:44,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:44,511 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:44,563 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:44,567 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:44,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:44,569 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 16:24:44,571 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 16:24:44,573 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 16:24:44,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:44,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:44,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:44,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:44,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:44,588 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:44,588 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:44,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:44,595 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:44,596 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:44,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:44,599 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 16:24:44,600 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 16:24:44,603 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:44,608 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 16:24:44,608 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:44,609 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:44,609 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:24:44,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:44,619 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:44,667 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:44,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:24:44,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:24:44,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:44,678 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:44,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:44,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:44,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:44,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:44,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:44,690 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:44,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:44,803 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:24:44,805 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 457 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.0) 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 16:24:45,042 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 457 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.0) 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 1246 states and 4395 transitions. Complement of second has 6 states. [2025-04-26 16:24:45,045 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 16:24:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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 16:24:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-04-26 16:24:45,054 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 1 letters. Loop has 3 letters. [2025-04-26 16:24:45,055 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:45,055 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:24:45,055 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:45,055 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 1 letters. Loop has 6 letters. [2025-04-26 16:24:45,055 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:45,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1246 states and 4395 transitions. [2025-04-26 16:24:45,079 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 440 [2025-04-26 16:24:45,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1246 states to 928 states and 3313 transitions. [2025-04-26 16:24:45,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2025-04-26 16:24:45,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 631 [2025-04-26 16:24:45,104 INFO L74 IsDeterministic]: Start isDeterministic. Operand 928 states and 3313 transitions. [2025-04-26 16:24:45,104 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:45,104 INFO L218 hiAutomatonCegarLoop]: Abstraction has 928 states and 3313 transitions. [2025-04-26 16:24:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states and 3313 transitions. [2025-04-26 16:24:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 779. [2025-04-26 16:24:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 779 states have (on average 3.562259306803594) internal successors, (in total 2775), 778 states have internal predecessors, (2775), 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 16:24:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2775 transitions. [2025-04-26 16:24:45,165 INFO L240 hiAutomatonCegarLoop]: Abstraction has 779 states and 2775 transitions. [2025-04-26 16:24:45,165 INFO L438 stractBuchiCegarLoop]: Abstraction has 779 states and 2775 transitions. [2025-04-26 16:24:45,165 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:45,165 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 779 states and 2775 transitions. [2025-04-26 16:24:45,172 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 440 [2025-04-26 16:24:45,172 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:45,172 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:45,173 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:45,173 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:45,173 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:24:45,173 INFO L754 eck$LassoCheckResult]: Loop: "[92] L37-->L39: Formula: (< v_x2_3 v_z_5) InVars {x2=v_x2_3, z=v_z_5} OutVars{x2=v_x2_3, z=v_z_5} AuxVars[] AssignedVars[]" "[95] L39-->L40: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[98] L40-->L37: Formula: (= v_x1_5 (+ v_x1_6 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:45,174 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash 4452, now seen corresponding path program 1 times [2025-04-26 16:24:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,174 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532384045] [2025-04-26 16:24:45,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,181 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,187 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash 121246, now seen corresponding path program 1 times [2025-04-26 16:24:45,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029960519] [2025-04-26 16:24:45,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:45,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:45,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,194 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:45,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:45,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,198 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash 132720987, now seen corresponding path program 1 times [2025-04-26 16:24:45,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,198 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469382209] [2025-04-26 16:24:45,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:45,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:45,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,202 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:45,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:45,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,234 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:45,234 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:45,234 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:45,234 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:45,234 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:45,234 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,234 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:45,234 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:45,235 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:45,235 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:45,235 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:45,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:45,240 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:45,265 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:45,265 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:45,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,267 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 16:24:45,269 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 16:24:45,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:45,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:45,288 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 16:24:45,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,290 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 16:24:45,291 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 16:24:45,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:45,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:45,319 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:45,319 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=7}, {x1=2}, {x1=-8}] Lambdas: [1, 5, 1] Nus: [0, 1] [2025-04-26 16:24:45,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:45,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,327 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 16:24:45,328 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 16:24:45,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:45,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:45,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,354 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 16:24:45,354 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 16:24:45,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:45,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:45,419 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:45,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:24:45,423 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:45,424 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:45,424 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:45,424 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:45,424 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:45,424 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,424 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:45,424 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:45,424 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:45,424 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:45,424 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:45,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:45,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:45,457 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:45,458 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:45,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,460 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 16:24:45,460 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 16:24:45,461 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 16:24:45,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:45,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:45,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:45,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:45,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:45,472 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:45,472 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:45,474 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:45,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:24:45,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,481 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 16:24:45,481 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 16:24:45,482 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 16:24:45,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:45,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:45,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:45,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:45,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:45,494 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:45,495 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:45,497 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:45,502 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:45,502 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:45,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,504 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 16:24:45,505 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 16:24:45,506 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:45,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:24:45,510 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:45,510 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:45,510 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 16:24:45,516 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 16:24:45,517 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:45,528 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:45,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:45,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:45,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:45,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:45,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:45,541 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:45,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:45,569 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 16:24:45,570 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:24:45,570 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 779 states and 2775 transitions. cyclomatic complexity: 2140 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 16:24:45,696 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 779 states and 2775 transitions. cyclomatic complexity: 2140. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 2211 states and 8126 transitions. Complement of second has 6 states. [2025-04-26 16:24:45,697 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 16:24:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 16:24:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-04-26 16:24:45,698 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:24:45,698 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:45,698 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:24:45,698 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:45,698 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:24:45,698 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:45,698 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2211 states and 8126 transitions. [2025-04-26 16:24:45,722 INFO L131 ngComponentsAnalysis]: Automaton has 152 accepting balls. 437 [2025-04-26 16:24:45,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2211 states to 1653 states and 6022 transitions. [2025-04-26 16:24:45,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 634 [2025-04-26 16:24:45,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 811 [2025-04-26 16:24:45,741 INFO L74 IsDeterministic]: Start isDeterministic. Operand 1653 states and 6022 transitions. [2025-04-26 16:24:45,741 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:45,741 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1653 states and 6022 transitions. [2025-04-26 16:24:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states and 6022 transitions. [2025-04-26 16:24:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1477. [2025-04-26 16:24:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1477 states have (on average 3.679079214624238) internal successors, (in total 5434), 1476 states have internal predecessors, (5434), 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 16:24:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 5434 transitions. [2025-04-26 16:24:45,784 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1477 states and 5434 transitions. [2025-04-26 16:24:45,784 INFO L438 stractBuchiCegarLoop]: Abstraction has 1477 states and 5434 transitions. [2025-04-26 16:24:45,784 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:45,784 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1477 states and 5434 transitions. [2025-04-26 16:24:45,794 INFO L131 ngComponentsAnalysis]: Automaton has 152 accepting balls. 437 [2025-04-26 16:24:45,794 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:45,794 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:45,794 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:45,794 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:45,795 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[83] L23-->L28-1: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" [2025-04-26 16:24:45,795 INFO L754 eck$LassoCheckResult]: Loop: "[86] L28-1-->L30: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[89] L30-->L28-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-04-26 16:24:45,795 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,795 INFO L85 PathProgramCache]: Analyzing trace with hash 4423, now seen corresponding path program 1 times [2025-04-26 16:24:45,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,795 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682785700] [2025-04-26 16:24:45,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,798 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,800 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 3716, now seen corresponding path program 1 times [2025-04-26 16:24:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,800 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013285880] [2025-04-26 16:24:45,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,806 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:45,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:45,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,809 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 4253258, now seen corresponding path program 1 times [2025-04-26 16:24:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:45,809 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750976654] [2025-04-26 16:24:45,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:45,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:45,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:45,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,814 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:45,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:45,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:45,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:45,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:45,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:45,833 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:45,833 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:45,833 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:45,833 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:45,833 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:45,833 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,833 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:45,833 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:45,833 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:45,833 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:45,833 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:45,834 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:45,849 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:45,849 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:45,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,851 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 16:24:45,852 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 16:24:45,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:45,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:45,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:45,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,872 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:45,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:24:45,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:45,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:45,942 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:45,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:24:45,946 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:45,946 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:45,946 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:45,946 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:45,946 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:45,946 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,946 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:45,946 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:45,946 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:45,946 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:45,946 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:45,947 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:45,970 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:45,970 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:45,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,972 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:45,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:24:45,974 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 16:24:45,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:45,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:45,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:45,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:45,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:45,984 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:45,984 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:45,986 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:45,988 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:45,988 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:45,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,990 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:45,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:24:45,991 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:45,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 16:24:45,995 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:45,995 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:45,995 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 16:24:46,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:24:46,002 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:46,013 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:46,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:46,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:46,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:46,023 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:46,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:46,034 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:46,034 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1477 states and 5434 transitions. cyclomatic complexity: 4211 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 16:24:46,127 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1477 states and 5434 transitions. cyclomatic complexity: 4211. 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 2652 states and 10233 transitions. Complement of second has 6 states. [2025-04-26 16:24:46,128 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 16:24:46,128 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 16:24:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-04-26 16:24:46,129 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:46,129 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:46,129 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:46,129 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:46,129 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:46,129 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:46,129 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2652 states and 10233 transitions. [2025-04-26 16:24:46,154 INFO L131 ngComponentsAnalysis]: Automaton has 150 accepting balls. 399 [2025-04-26 16:24:46,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2652 states to 2142 states and 8274 transitions. [2025-04-26 16:24:46,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 691 [2025-04-26 16:24:46,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 866 [2025-04-26 16:24:46,180 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2142 states and 8274 transitions. [2025-04-26 16:24:46,180 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:46,180 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2142 states and 8274 transitions. [2025-04-26 16:24:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states and 8274 transitions. [2025-04-26 16:24:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1893. [2025-04-26 16:24:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1893 states have (on average 3.937665081880613) internal successors, (in total 7454), 1892 states have internal predecessors, (7454), 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 16:24:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7454 transitions. [2025-04-26 16:24:46,231 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1893 states and 7454 transitions. [2025-04-26 16:24:46,231 INFO L438 stractBuchiCegarLoop]: Abstraction has 1893 states and 7454 transitions. [2025-04-26 16:24:46,231 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:46,232 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1893 states and 7454 transitions. [2025-04-26 16:24:46,254 INFO L131 ngComponentsAnalysis]: Automaton has 150 accepting balls. 399 [2025-04-26 16:24:46,255 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:46,255 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:46,255 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:46,255 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:46,255 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[115] L13-->L51: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:24:46,255 INFO L754 eck$LassoCheckResult]: Loop: "[100] L51-->L53: Formula: (< v_x5_1 v_z_9) InVars {x5=v_x5_1, z=v_z_9} OutVars{x5=v_x5_1, z=v_z_9} AuxVars[] AssignedVars[]" "[103] L53-->L54: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" "[106] L54-->L51: Formula: (= v_x1_7 (+ v_x1_8 1)) InVars {x1=v_x1_8} OutVars{x1=v_x1_7} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:46,256 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 138127, now seen corresponding path program 1 times [2025-04-26 16:24:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:46,256 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440543673] [2025-04-26 16:24:46,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:46,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:46,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:46,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,261 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:46,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:46,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:46,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 129190, now seen corresponding path program 1 times [2025-04-26 16:24:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:46,267 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150170552] [2025-04-26 16:24:46,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:46,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:46,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:46,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:46,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,274 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:46,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:46,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:46,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,276 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -179926440, now seen corresponding path program 1 times [2025-04-26 16:24:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:46,277 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146984171] [2025-04-26 16:24:46,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:46,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:46,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:46,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,285 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:46,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:46,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:46,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,314 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:46,314 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:46,314 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:46,314 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:46,314 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:46,314 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,314 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:46,314 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:46,314 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:24:46,314 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:46,314 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:46,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,340 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:46,340 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:46,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,343 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:24:46,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:46,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:46,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,367 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:24:46,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:46,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,394 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:46,395 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=7}, {x1=2}, {x1=-8}] Lambdas: [1, 5, 1] Nus: [0, 1] [2025-04-26 16:24:46,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:46,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:24:46,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:46,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:46,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,430 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:24:46,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:46,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,499 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:46,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:46,504 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:46,504 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:46,504 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:46,504 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:46,504 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:46,504 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,504 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:46,504 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:46,504 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:24:46,504 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:46,504 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:46,505 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,536 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:46,536 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:46,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,540 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:24:46,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:46,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:46,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:46,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:46,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:46,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:46,554 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:46,554 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:46,555 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:46,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:24:46,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,564 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:24:46,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:46,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:46,578 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:46,578 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:46,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:46,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:46,579 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:46,579 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:46,582 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:46,587 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:46,587 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:46,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,590 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:46,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:24:46,593 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:46,596 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:46,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 16:24:46,596 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:46,596 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:46,596 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-04-26 16:24:46,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:24:46,603 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:46,615 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:46,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:46,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:46,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:46,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:46,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:46,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:46,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:46,629 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:46,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:46,665 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:24:46,665 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1893 states and 7454 transitions. cyclomatic complexity: 5858 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 16:24:46,758 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1893 states and 7454 transitions. cyclomatic complexity: 5858. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 5247 states and 21363 transitions. Complement of second has 6 states. [2025-04-26 16:24:46,759 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 16:24:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 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 16:24:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2025-04-26 16:24:46,760 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:24:46,760 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:46,760 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:24:46,760 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:46,760 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 84 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:24:46,760 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:46,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5247 states and 21363 transitions. [2025-04-26 16:24:46,841 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 252 [2025-04-26 16:24:46,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5247 states to 3782 states and 15209 transitions. [2025-04-26 16:24:46,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 957 [2025-04-26 16:24:46,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1200 [2025-04-26 16:24:46,885 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3782 states and 15209 transitions. [2025-04-26 16:24:46,885 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:46,885 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3782 states and 15209 transitions. [2025-04-26 16:24:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states and 15209 transitions. [2025-04-26 16:24:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3338. [2025-04-26 16:24:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 3338 states have (on average 4.061713600958658) internal successors, (in total 13558), 3337 states have internal predecessors, (13558), 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 16:24:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 13558 transitions. [2025-04-26 16:24:46,995 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3338 states and 13558 transitions. [2025-04-26 16:24:46,995 INFO L438 stractBuchiCegarLoop]: Abstraction has 3338 states and 13558 transitions. [2025-04-26 16:24:46,995 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:24:46,995 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3338 states and 13558 transitions. [2025-04-26 16:24:47,019 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 252 [2025-04-26 16:24:47,019 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:47,019 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:47,019 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:47,019 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:47,020 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[91] L37-->L42-1: Formula: (<= v_z_6 v_x2_6) InVars {x2=v_x2_6, z=v_z_6} OutVars{x2=v_x2_6, z=v_z_6} AuxVars[] AssignedVars[]" [2025-04-26 16:24:47,020 INFO L754 eck$LassoCheckResult]: Loop: "[94] L42-1-->L44: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[97] L44-->L42-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-04-26 16:24:47,021 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash 138103, now seen corresponding path program 1 times [2025-04-26 16:24:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:47,021 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978918983] [2025-04-26 16:24:47,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:47,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:47,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:47,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,025 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:47,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:47,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:47,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:47,029 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash 3972, now seen corresponding path program 1 times [2025-04-26 16:24:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:47,029 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594445198] [2025-04-26 16:24:47,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:47,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:47,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,033 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:47,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:47,039 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash 132719994, now seen corresponding path program 1 times [2025-04-26 16:24:47,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:47,040 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330679106] [2025-04-26 16:24:47,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:47,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:47,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:47,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:47,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,047 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:47,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:47,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:47,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:47,070 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:47,070 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:47,070 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:47,070 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:47,070 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:47,070 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,070 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:47,070 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:47,070 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:24:47,070 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:47,070 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:47,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:47,086 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:47,086 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:47,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,088 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:47,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:24:47,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:47,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:47,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:47,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,113 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:47,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:24:47,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:47,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:47,183 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:47,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:24:47,188 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:47,188 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:47,188 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:47,188 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:47,188 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:47,188 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,188 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:47,188 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:47,188 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:24:47,188 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:47,188 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:47,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:47,209 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:47,209 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:47,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,211 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:47,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:24:47,214 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 16:24:47,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:47,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:47,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:47,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:47,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:47,226 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:47,226 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:47,227 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:47,230 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:47,230 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:47,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,232 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:47,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 16:24:47,234 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:47,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:47,237 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:47,237 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:47,237 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 16:24:47,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:47,243 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:47,253 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:47,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:47,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:47,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:47,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:47,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:47,276 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:47,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:47,295 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 16:24:47,295 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 16:24:47,295 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3338 states and 13558 transitions. cyclomatic complexity: 10639 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,417 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3338 states and 13558 transitions. cyclomatic complexity: 10639. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 5395 states and 22069 transitions. Complement of second has 6 states. [2025-04-26 16:24:47,417 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 16:24:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-04-26 16:24:47,419 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:24:47,419 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,419 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:24:47,419 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,419 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:24:47,419 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5395 states and 22069 transitions. [2025-04-26 16:24:47,522 INFO L131 ngComponentsAnalysis]: Automaton has 73 accepting balls. 146 [2025-04-26 16:24:47,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5395 states to 3830 states and 15718 transitions. [2025-04-26 16:24:47,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 901 [2025-04-26 16:24:47,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1027 [2025-04-26 16:24:47,568 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3830 states and 15718 transitions. [2025-04-26 16:24:47,568 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:47,568 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3830 states and 15718 transitions. [2025-04-26 16:24:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states and 15718 transitions. [2025-04-26 16:24:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3508. [2025-04-26 16:24:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3508 states, 3508 states have (on average 4.151083238312428) internal successors, (in total 14562), 3507 states have internal predecessors, (14562), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 14562 transitions. [2025-04-26 16:24:47,648 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3508 states and 14562 transitions. [2025-04-26 16:24:47,648 INFO L438 stractBuchiCegarLoop]: Abstraction has 3508 states and 14562 transitions. [2025-04-26 16:24:47,648 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:24:47,648 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3508 states and 14562 transitions. [2025-04-26 16:24:47,664 INFO L131 ngComponentsAnalysis]: Automaton has 73 accepting balls. 146 [2025-04-26 16:24:47,664 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:47,664 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:47,665 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:47,665 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:47,665 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[115] L13-->L51: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[99] L51-->L56-1: Formula: (<= v_z_10 v_x5_4) InVars {x5=v_x5_4, z=v_z_10} OutVars{x5=v_x5_4, z=v_z_10} AuxVars[] AssignedVars[]" [2025-04-26 16:24:47,665 INFO L754 eck$LassoCheckResult]: Loop: "[102] L56-1-->L58: Formula: (< v_x6_1 v_z_11) InVars {x6=v_x6_1, z=v_z_11} OutVars{x6=v_x6_1, z=v_z_11} AuxVars[] AssignedVars[]" "[105] L58-->L56-1: Formula: (= v_x6_2 (+ v_x6_3 1)) InVars {x6=v_x6_3} OutVars{x6=v_x6_2} AuxVars[] AssignedVars[x6]" [2025-04-26 16:24:47,665 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash 4282036, now seen corresponding path program 1 times [2025-04-26 16:24:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:47,665 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693798711] [2025-04-26 16:24:47,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:47,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:47,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:47,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:47,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,669 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:47,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:47,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:47,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:47,673 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,673 INFO L85 PathProgramCache]: Analyzing trace with hash 4228, now seen corresponding path program 1 times [2025-04-26 16:24:47,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:47,673 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279043959] [2025-04-26 16:24:47,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:47,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:47,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,675 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:47,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:47,681 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash -179927433, now seen corresponding path program 1 times [2025-04-26 16:24:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:47,681 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575464675] [2025-04-26 16:24:47,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:47,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:47,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:47,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,687 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:47,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:47,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:47,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:47,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:47,712 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:47,712 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:47,712 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:47,712 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:47,712 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:47,712 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,712 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:47,712 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:47,712 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration6_Loop [2025-04-26 16:24:47,712 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:47,712 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:47,713 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:47,728 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:47,729 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:47,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,730 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:47,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 16:24:47,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:47,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:47,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:47,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,754 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:47,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 16:24:47,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:47,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:47,819 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:47,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-04-26 16:24:47,824 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:47,824 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:47,824 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:47,824 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:47,824 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:47,824 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,824 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:47,824 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:47,824 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration6_Loop [2025-04-26 16:24:47,824 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:47,824 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:47,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:47,841 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:47,841 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:47,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,843 INFO L229 MonitoredProcess]: Starting monitored process 30 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 16:24:47,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-04-26 16:24:47,847 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:47,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:47,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:47,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:47,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:47,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:47,858 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:47,858 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:47,860 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:47,862 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:47,862 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:47,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:47,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:47,863 INFO L229 MonitoredProcess]: Starting monitored process 31 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 16:24:47,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-04-26 16:24:47,865 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:47,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-04-26 16:24:47,868 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:47,868 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:47,868 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x6) = 1*z - 1*x6 Supporting invariants [] [2025-04-26 16:24:47,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:47,873 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:47,882 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:47,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:47,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:47,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:47,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:47,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:47,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:47,898 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:47,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:47,909 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 16:24:47,909 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 16:24:47,909 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3508 states and 14562 transitions. cyclomatic complexity: 11452 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 16:24:48,054 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3508 states and 14562 transitions. cyclomatic complexity: 11452. 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 5245 states and 21265 transitions. Complement of second has 6 states. [2025-04-26 16:24:48,054 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 16:24:48,056 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 16:24:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-04-26 16:24:48,056 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:48,056 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:48,056 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:48,056 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:48,056 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:24:48,056 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:48,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5245 states and 21265 transitions. [2025-04-26 16:24:48,100 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:48,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5245 states to 0 states and 0 transitions. [2025-04-26 16:24:48,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:48,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:48,101 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:48,101 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:48,101 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:48,101 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:48,101 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:48,101 INFO L340 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-04-26 16:24:48,101 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:48,101 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:48,101 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:48,108 INFO L201 PluginConnector]: Adding new model seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:48 BoogieIcfgContainer [2025-04-26 16:24:48,108 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:48,108 INFO L158 Benchmark]: Toolchain (without parser) took 4531.06ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 79.2MB in the beginning and 131.6MB in the end (delta: -52.4MB). Peak memory consumption was 58.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:48,108 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:48,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.58ms. Allocated memory is still 142.6MB. Free memory was 79.2MB in the beginning and 77.3MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:24:48,109 INFO L158 Benchmark]: Boogie Preprocessor took 27.27ms. Allocated memory is still 142.6MB. Free memory was 77.3MB in the beginning and 76.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:48,109 INFO L158 Benchmark]: RCFGBuilder took 206.49ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 66.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:24:48,109 INFO L158 Benchmark]: BuchiAutomizer took 4257.30ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 66.6MB in the beginning and 131.6MB in the end (delta: -65.0MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. [2025-04-26 16:24:48,110 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 0.20ms. Allocated memory is still 142.6MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.58ms. Allocated memory is still 142.6MB. Free memory was 79.2MB in the beginning and 77.3MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.27ms. Allocated memory is still 142.6MB. Free memory was 77.3MB in the beginning and 76.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 206.49ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 66.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 4257.30ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 66.6MB in the beginning and 131.6MB in the end (delta: -65.0MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 1340 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.4s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 345 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 345 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 159 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 406 IncrementalHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 186 mSDtfsCounter, 406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 41ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 6 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 z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x6 and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:48,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...