/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/interleaved3.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:37,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:37,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:37,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:37,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:37,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:37,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:37,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:37,894 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:37,894 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:37,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:37,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:37,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:37,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:37,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:37,896 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:37,896 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:38,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:38,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:38,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:38,133 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:38,134 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:38,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/interleaved3.c.bpl [2025-04-26 16:24:38,137 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/interleaved3.c.bpl' [2025-04-26 16:24:38,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:38,154 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:38,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:38,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:38,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:38,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,191 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:38,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:38,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:38,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:38,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:38,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,203 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:38,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:38,214 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:38,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:38,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/1) ... [2025-04-26 16:24:38,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:38,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:38,240 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 16:24:38,245 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 16:24:38,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:38,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:38,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:38,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:38,265 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 16:24:38,300 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:38,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:38,389 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:38,389 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:38,407 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:38,409 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:38,410 INFO L201 PluginConnector]: Adding new model interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:38 BoogieIcfgContainer [2025-04-26 16:24:38,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:38,410 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:38,411 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:38,416 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:38,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:38,417 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:38" (1/2) ... [2025-04-26 16:24:38,418 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bdc76d8 and model type interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:38, skipping insertion in model container [2025-04-26 16:24:38,418 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:38,418 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:38" (2/2) ... [2025-04-26 16:24:38,419 INFO L376 chiAutomizerObserver]: Analyzing ICFG interleaved3.c.bpl [2025-04-26 16:24:38,473 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:24:38,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 85 flow [2025-04-26 16:24:38,525 INFO L116 PetriNetUnfolderBase]: 3/26 cut-off events. [2025-04-26 16:24:38,528 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:24:38,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 3/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-04-26 16:24:38,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 32 transitions, 85 flow [2025-04-26 16:24:38,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 70 flow [2025-04-26 16:24:38,535 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 33 places, 26 transitions, 70 flow [2025-04-26 16:24:38,543 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:38,543 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:38,543 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:38,544 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:38,544 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:38,544 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:38,544 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:38,544 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:38,545 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:38,618 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 280 [2025-04-26 16:24:38,618 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:38,619 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:38,624 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:38,625 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:24:38,625 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:38,625 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 303 states, but on-demand construction may add more states [2025-04-26 16:24:38,638 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 280 [2025-04-26 16:24:38,638 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:38,639 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:38,639 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:38,639 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:24:38,643 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L14: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x2_5 0) (= v_f1_4 0)) InVars {x1=v_x1_5, f2=v_f2_4, f3=v_f3_4, x2=v_x2_5, f1=v_f1_4, x3=v_x3_5} OutVars{x1=v_x1_5, f2=v_f2_4, f3=v_f3_4, x2=v_x2_5, f1=v_f1_4, x3=v_x3_5} AuxVars[] AssignedVars[]" "[93] L14-->L29-1: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" [2025-04-26 16:24:38,643 INFO L754 eck$LassoCheckResult]: Loop: "[68] L29-1-->L27: 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[]" "[70] L27-->L28: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[71] L28-->L29: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[72] L29-->L29-1: Formula: (and (< 0 v_f1_6) (= v_f1_5 0)) InVars {f1=v_f1_6} OutVars{f1=v_f1_5} AuxVars[] AssignedVars[f1]" [2025-04-26 16:24:38,647 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash 3007, now seen corresponding path program 1 times [2025-04-26 16:24:38,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:38,654 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961980836] [2025-04-26 16:24:38,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:38,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:38,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:38,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:38,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:38,703 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:38,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:38,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:38,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:38,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:38,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:38,723 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:38,723 INFO L85 PathProgramCache]: Analyzing trace with hash 3018852, now seen corresponding path program 1 times [2025-04-26 16:24:38,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:38,723 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655461161] [2025-04-26 16:24:38,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:38,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:38,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:38,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:38,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:38,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:38,733 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:38,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:38,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:38,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:38,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:38,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:38,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1515844318, now seen corresponding path program 1 times [2025-04-26 16:24:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:38,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041908993] [2025-04-26 16:24:38,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:38,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:38,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:38,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:38,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:38,800 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 16:24:38,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:38,801 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041908993] [2025-04-26 16:24:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041908993] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:38,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:38,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:24:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81567012] [2025-04-26 16:24:38,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:38,913 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:38,914 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:38,917 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:38,918 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:38,918 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:38,918 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:38,918 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:38,918 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:38,918 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:38,918 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:38,918 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:38,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:38,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:38,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,036 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:39,037 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:39,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:39,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:24:39,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:39,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,058 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:39,058 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2=1} Honda state: {f2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:39,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-04-26 16:24:39,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:39,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:24:39,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:39,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,088 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 16:24:39,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:39,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:24:39,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:39,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,139 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:39,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:39,144 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:39,144 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:39,144 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:39,144 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:39,144 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:39,144 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,144 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:39,145 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:39,145 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:39,145 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:39,145 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:39,146 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,206 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:39,209 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:39,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,213 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 16:24:39,214 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 16:24:39,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:39,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:39,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:39,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:39,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:39,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:39,232 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:39,232 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:39,234 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:39,237 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:39,237 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:39,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,240 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 16:24:39,241 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 16:24:39,242 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:39,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:24:39,245 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:39,246 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:39,246 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f1) = 1*f1 Supporting invariants [] [2025-04-26 16:24:39,252 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 16:24:39,254 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:39,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:39,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:39,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:39,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:39,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:39,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:39,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:39,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:39,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:39,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:39,293 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 16:24:39,321 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-04-26 16:24:39,324 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 303 states, but on-demand construction may add more states 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 16:24:39,417 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 303 states, but on-demand construction may add more states. 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 1040 states and 3252 transitions. Complement of second has 5 states. [2025-04-26 16:24:39,421 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:39,425 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 16:24:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2025-04-26 16:24:39,431 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:39,432 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:39,432 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:24:39,432 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:39,432 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 2 letters. Loop has 8 letters. [2025-04-26 16:24:39,433 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:39,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1040 states and 3252 transitions. [2025-04-26 16:24:39,451 INFO L131 ngComponentsAnalysis]: Automaton has 73 accepting balls. 436 [2025-04-26 16:24:39,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1040 states to 830 states and 2606 transitions. [2025-04-26 16:24:39,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 514 [2025-04-26 16:24:39,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 636 [2025-04-26 16:24:39,476 INFO L74 IsDeterministic]: Start isDeterministic. Operand 830 states and 2606 transitions. [2025-04-26 16:24:39,477 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:39,477 INFO L218 hiAutomatonCegarLoop]: Abstraction has 830 states and 2606 transitions. [2025-04-26 16:24:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states and 2606 transitions. [2025-04-26 16:24:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 610. [2025-04-26 16:24:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 610 states have (on average 3.1672131147540985) internal successors, (in total 1932), 609 states have internal predecessors, (1932), 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 16:24:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1932 transitions. [2025-04-26 16:24:39,531 INFO L240 hiAutomatonCegarLoop]: Abstraction has 610 states and 1932 transitions. [2025-04-26 16:24:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:39,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:39,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:39,533 INFO L87 Difference]: Start difference. First operand 610 states and 1932 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (in total 6), 2 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 16:24:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:39,561 INFO L93 Difference]: Finished difference Result 815 states and 2320 transitions. [2025-04-26 16:24:39,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 815 states and 2320 transitions. [2025-04-26 16:24:39,568 INFO L131 ngComponentsAnalysis]: Automaton has 83 accepting balls. 548 [2025-04-26 16:24:39,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 815 states to 628 states and 1827 transitions. [2025-04-26 16:24:39,573 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 628 [2025-04-26 16:24:39,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 628 [2025-04-26 16:24:39,574 INFO L74 IsDeterministic]: Start isDeterministic. Operand 628 states and 1827 transitions. [2025-04-26 16:24:39,576 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:39,577 INFO L218 hiAutomatonCegarLoop]: Abstraction has 628 states and 1827 transitions. [2025-04-26 16:24:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states and 1827 transitions. [2025-04-26 16:24:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 400. [2025-04-26 16:24:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 400 states have (on average 2.9475) internal successors, (in total 1179), 399 states have internal predecessors, (1179), 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 16:24:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1179 transitions. [2025-04-26 16:24:39,598 INFO L240 hiAutomatonCegarLoop]: Abstraction has 400 states and 1179 transitions. [2025-04-26 16:24:39,599 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:39,599 INFO L438 stractBuchiCegarLoop]: Abstraction has 400 states and 1179 transitions. [2025-04-26 16:24:39,600 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:39,600 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 400 states and 1179 transitions. [2025-04-26 16:24:39,602 INFO L131 ngComponentsAnalysis]: Automaton has 41 accepting balls. 380 [2025-04-26 16:24:39,602 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:39,602 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:39,602 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:39,602 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:24:39,603 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L14: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x2_5 0) (= v_f1_4 0)) InVars {x1=v_x1_5, f2=v_f2_4, f3=v_f3_4, x2=v_x2_5, f1=v_f1_4, x3=v_x3_5} OutVars{x1=v_x1_5, f2=v_f2_4, f3=v_f3_4, x2=v_x2_5, f1=v_f1_4, x3=v_x3_5} AuxVars[] AssignedVars[]" "[93] L14-->L29-1: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[87] L14-1-->L40: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:39,603 INFO L754 eck$LassoCheckResult]: Loop: "[74] L40-->L42: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[76] L42-->L42-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[77] L42-1-->L48: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" "[78] L48-->L40: Formula: (= v_f3_1 1) InVars {} OutVars{f3=v_f3_1} AuxVars[] AssignedVars[f3]" [2025-04-26 16:24:39,603 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash 93304, now seen corresponding path program 1 times [2025-04-26 16:24:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:39,603 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525334792] [2025-04-26 16:24:39,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:39,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:39,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:39,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:39,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,607 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:39,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:39,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:39,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:39,611 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash 3203556, now seen corresponding path program 1 times [2025-04-26 16:24:39,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:39,611 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587936193] [2025-04-26 16:24:39,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:39,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:39,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:39,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:39,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,616 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:39,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:39,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:39,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:39,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:39,624 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,624 INFO L85 PathProgramCache]: Analyzing trace with hash 271137499, now seen corresponding path program 1 times [2025-04-26 16:24:39,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:39,624 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220694163] [2025-04-26 16:24:39,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:39,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:39,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:24:39,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:24:39,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:39,645 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 16:24:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:39,645 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220694163] [2025-04-26 16:24:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220694163] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:24:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386531015] [2025-04-26 16:24:39,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:39,679 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:39,680 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:39,680 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:39,680 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:39,680 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:39,680 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,680 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:39,680 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:39,680 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:39,680 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:39,680 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:39,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,724 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:39,724 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:39,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,726 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 16:24:39,727 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 16:24:39,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:39,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,740 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:39,740 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f3=1} Honda state: {f3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:39,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:24:39,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,747 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 16:24:39,748 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 16:24:39,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:39,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,766 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 16:24:39,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,769 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 16:24:39,770 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 16:24:39,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:39,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:39,795 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:39,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:39,799 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:39,799 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:39,799 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:39,799 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:39,799 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:39,799 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,799 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:39,800 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:39,800 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:39,800 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:39,800 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:39,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,808 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:39,843 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:39,843 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:39,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,845 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 16:24:39,846 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 16:24:39,847 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 16:24:39,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:39,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:39,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:39,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:39,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:39,857 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:39,858 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:39,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:39,861 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:39,861 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:39,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:39,863 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 16:24:39,864 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 16:24:39,864 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:39,868 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 16:24:39,868 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:39,868 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:39,868 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(f2) = 1*f2 Supporting invariants [] [2025-04-26 16:24:39,874 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 16:24:39,875 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:39,892 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:39,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:39,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:39,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:39,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:39,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:39,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:39,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:39,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:39,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:39,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:39,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:39,952 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 16:24:39,953 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 16:24:39,953 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 400 states and 1179 transitions. cyclomatic complexity: 820 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:39,998 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 400 states and 1179 transitions. cyclomatic complexity: 820. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 1401 states and 4246 transitions. Complement of second has 5 states. [2025-04-26 16:24:39,999 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-04-26 16:24:40,000 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:24:40,000 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,000 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 16:24:40,000 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,000 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 3 letters. Loop has 8 letters. [2025-04-26 16:24:40,000 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1401 states and 4246 transitions. [2025-04-26 16:24:40,015 INFO L131 ngComponentsAnalysis]: Automaton has 79 accepting balls. 532 [2025-04-26 16:24:40,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1401 states to 1209 states and 3670 transitions. [2025-04-26 16:24:40,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 729 [2025-04-26 16:24:40,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 891 [2025-04-26 16:24:40,041 INFO L74 IsDeterministic]: Start isDeterministic. Operand 1209 states and 3670 transitions. [2025-04-26 16:24:40,043 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:40,043 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1209 states and 3670 transitions. [2025-04-26 16:24:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states and 3670 transitions. [2025-04-26 16:24:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 958. [2025-04-26 16:24:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 958 states have (on average 3.1022964509394573) internal successors, (in total 2972), 957 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 2972 transitions. [2025-04-26 16:24:40,068 INFO L240 hiAutomatonCegarLoop]: Abstraction has 958 states and 2972 transitions. [2025-04-26 16:24:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:40,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:40,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:40,069 INFO L87 Difference]: Start difference. First operand 958 states and 2972 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:40,100 INFO L93 Difference]: Finished difference Result 1527 states and 4486 transitions. [2025-04-26 16:24:40,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1527 states and 4486 transitions. [2025-04-26 16:24:40,114 INFO L131 ngComponentsAnalysis]: Automaton has 91 accepting balls. 672 [2025-04-26 16:24:40,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1527 states to 981 states and 2846 transitions. [2025-04-26 16:24:40,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 847 [2025-04-26 16:24:40,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 892 [2025-04-26 16:24:40,124 INFO L74 IsDeterministic]: Start isDeterministic. Operand 981 states and 2846 transitions. [2025-04-26 16:24:40,127 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:40,127 INFO L218 hiAutomatonCegarLoop]: Abstraction has 981 states and 2846 transitions. [2025-04-26 16:24:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states and 2846 transitions. [2025-04-26 16:24:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 570. [2025-04-26 16:24:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 570 states have (on average 2.924561403508772) internal successors, (in total 1667), 569 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1667 transitions. [2025-04-26 16:24:40,146 INFO L240 hiAutomatonCegarLoop]: Abstraction has 570 states and 1667 transitions. [2025-04-26 16:24:40,146 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:40,147 INFO L438 stractBuchiCegarLoop]: Abstraction has 570 states and 1667 transitions. [2025-04-26 16:24:40,147 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:40,147 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 570 states and 1667 transitions. [2025-04-26 16:24:40,150 INFO L131 ngComponentsAnalysis]: Automaton has 34 accepting balls. 444 [2025-04-26 16:24:40,150 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:40,150 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:40,152 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:40,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:24:40,152 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L14: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x2_5 0) (= v_f1_4 0)) InVars {x1=v_x1_5, f2=v_f2_4, f3=v_f3_4, x2=v_x2_5, f1=v_f1_4, x3=v_x3_5} OutVars{x1=v_x1_5, f2=v_f2_4, f3=v_f3_4, x2=v_x2_5, f1=v_f1_4, x3=v_x3_5} AuxVars[] AssignedVars[]" "[93] L14-->L29-1: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[87] L14-1-->L40: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[90] L15-->L55: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 16:24:40,153 INFO L754 eck$LassoCheckResult]: Loop: "[80] L55-->L57: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[68] L29-1-->L27: 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[]" "[74] L40-->L42: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[70] L27-->L28: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[71] L28-->L29: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[82] L57-->L57-1: Formula: (and (< 0 v_f3_6) (= v_f3_5 0)) InVars {f3=v_f3_6} OutVars{f3=v_f3_5} AuxVars[] AssignedVars[f3]" "[83] L57-1-->L63: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[84] L63-->L55: Formula: (= v_f1_3 1) InVars {} OutVars{f1=v_f1_3} AuxVars[] AssignedVars[f1]" "[76] L42-->L42-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[72] L29-->L29-1: Formula: (and (< 0 v_f1_6) (= v_f1_5 0)) InVars {f1=v_f1_6} OutVars{f1=v_f1_5} AuxVars[] AssignedVars[f1]" "[77] L42-1-->L48: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" "[78] L48-->L40: Formula: (= v_f3_1 1) InVars {} OutVars{f3=v_f3_1} AuxVars[] AssignedVars[f3]" [2025-04-26 16:24:40,153 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2892514, now seen corresponding path program 1 times [2025-04-26 16:24:40,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,153 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72460665] [2025-04-26 16:24:40,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,161 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,167 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1582251866, now seen corresponding path program 1 times [2025-04-26 16:24:40,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,167 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894315679] [2025-04-26 16:24:40,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:24:40,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:24:40,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,175 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:24:40,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:24:40,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,180 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2071914309, now seen corresponding path program 1 times [2025-04-26 16:24:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,180 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868655683] [2025-04-26 16:24:40,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 16:24:40,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 16:24:40,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:40,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:40,224 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868655683] [2025-04-26 16:24:40,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868655683] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:40,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:24:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314626174] [2025-04-26 16:24:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:40,320 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,320 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,320 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,320 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,320 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:40,320 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,320 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,320 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,320 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:40,320 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,320 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,321 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,341 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,398 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,398 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,403 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 16:24:40,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:40,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,415 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:40,415 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f3=1} Honda state: {f3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:40,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,423 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 16:24:40,425 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 16:24:40,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:40,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,437 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:40,437 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f1=0} Honda state: {f1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:40,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:24:40,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,445 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 16:24:40,447 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 16:24:40,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:40,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,468 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 16:24:40,470 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 16:24:40,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:40,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,553 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:40,558 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 16:24:40,558 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,558 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,558 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,558 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,558 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:40,558 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,558 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,558 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,558 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:40,558 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,558 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,633 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,633 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:40,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,635 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 16:24:40,637 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 16:24:40,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:40,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:40,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:40,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:40,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:40,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:40,648 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:40,648 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:40,649 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:40,655 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 16:24:40,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,657 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 16:24:40,658 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 16:24:40,658 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:40,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:40,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:40,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:40,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:40,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:40,669 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:40,669 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:40,670 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:40,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:24:40,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,680 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 16:24:40,681 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 16:24:40,685 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:40,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:40,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:40,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:40,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:40,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:40,697 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:40,697 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:40,699 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:40,702 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:40,702 INFO L437 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:40,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,705 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 16:24:40,707 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 16:24:40,708 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:40,710 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:40,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 16:24:40,712 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:40,712 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:40,712 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 16:24:40,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:24:40,719 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:40,735 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:24:40,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:24:40,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:40,850 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 16:24:40,850 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 570 states and 1667 transitions. cyclomatic complexity: 1145 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (in total 16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,930 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 570 states and 1667 transitions. cyclomatic complexity: 1145. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (in total 16), 5 states have internal predecessors, (16), 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 1965 states and 6033 transitions. Complement of second has 6 states. [2025-04-26 16:24:40,931 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (in total 16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-04-26 16:24:40,931 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 63 transitions. Stem has 4 letters. Loop has 12 letters. [2025-04-26 16:24:40,931 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,931 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 63 transitions. Stem has 16 letters. Loop has 12 letters. [2025-04-26 16:24:40,932 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,932 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 63 transitions. Stem has 4 letters. Loop has 24 letters. [2025-04-26 16:24:40,932 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:40,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1965 states and 6033 transitions. [2025-04-26 16:24:40,947 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 524 [2025-04-26 16:24:40,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1965 states to 1777 states and 5332 transitions. [2025-04-26 16:24:40,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 759 [2025-04-26 16:24:40,961 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 995 [2025-04-26 16:24:40,961 INFO L74 IsDeterministic]: Start isDeterministic. Operand 1777 states and 5332 transitions. [2025-04-26 16:24:40,961 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:40,961 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1777 states and 5332 transitions. [2025-04-26 16:24:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states and 5332 transitions. [2025-04-26 16:24:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1470. [2025-04-26 16:24:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1470 states have (on average 3.012244897959184) internal successors, (in total 4428), 1469 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4428 transitions. [2025-04-26 16:24:40,995 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1470 states and 4428 transitions. [2025-04-26 16:24:40,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:40,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:40,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:40,996 INFO L87 Difference]: Start difference. First operand 1470 states and 4428 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (in total 16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:41,009 INFO L93 Difference]: Finished difference Result 227 states and 469 transitions. [2025-04-26 16:24:41,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 227 states and 469 transitions. [2025-04-26 16:24:41,010 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:41,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 227 states to 0 states and 0 transitions. [2025-04-26 16:24:41,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:41,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:41,010 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:41,010 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:41,010 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,010 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,011 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:41,011 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,011 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:41,011 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:41,011 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:41,011 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:41,016 INFO L201 PluginConnector]: Adding new model interleaved3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:41 BoogieIcfgContainer [2025-04-26 16:24:41,016 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:41,018 INFO L158 Benchmark]: Toolchain (without parser) took 2863.26ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 86.9MB in the beginning and 79.9MB in the end (delta: 7.0MB). Peak memory consumption was 3.8MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,018 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.81ms. Allocated memory is still 159.4MB. Free memory was 87.9MB in the beginning and 87.7MB in the end (delta: 199.8kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.17ms. Allocated memory is still 159.4MB. Free memory was 86.9MB in the beginning and 84.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,018 INFO L158 Benchmark]: Boogie Preprocessor took 19.61ms. Allocated memory is still 159.4MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,018 INFO L158 Benchmark]: RCFGBuilder took 195.54ms. Allocated memory is still 159.4MB. Free memory was 83.9MB in the beginning and 74.3MB in the end (delta: 9.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,019 INFO L158 Benchmark]: BuchiAutomizer took 2605.82ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.3MB in the beginning and 79.9MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,020 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 0.81ms. Allocated memory is still 159.4MB. Free memory was 87.9MB in the beginning and 87.7MB in the end (delta: 199.8kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.17ms. Allocated memory is still 159.4MB. Free memory was 86.9MB in the beginning and 84.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 19.61ms. Allocated memory is still 159.4MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 195.54ms. Allocated memory is still 159.4MB. Free memory was 83.9MB in the beginning and 74.3MB in the end (delta: 9.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 2605.82ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.3MB in the beginning and 79.9MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1417 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 107 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital28 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 36ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function f1 and consists of 3 locations. One deterministic module has affine ranking function f2 and consists of 3 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:41,034 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...