/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/switch2.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:25,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:25,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:25,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:25,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:25,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:25,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:25,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:25,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:25,585 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:25,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:25,585 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:25,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:25,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:25,586 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:25,586 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:25,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:25,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:25,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:25,817 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:25,819 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:25,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/switch2.c.bpl [2025-04-26 16:24:25,822 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/switch2.c.bpl' [2025-04-26 16:24:25,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:25,837 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:25,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:25,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:25,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:25,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,864 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:25,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:25,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:25,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:25,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:25,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,875 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:25,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:25,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:25,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:25,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/1) ... [2025-04-26 16:24:25,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,916 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 16:24:25,920 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 16:24:25,941 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:25,942 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:25,943 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:25,943 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 16:24:25,979 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:25,980 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:26,054 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:26,054 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:26,062 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:26,063 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:26,063 INFO L201 PluginConnector]: Adding new model switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:26 BoogieIcfgContainer [2025-04-26 16:24:26,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:26,064 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:26,064 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:26,070 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:26,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:26,071 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:25" (1/2) ... [2025-04-26 16:24:26,072 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2de605cb and model type switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:26, skipping insertion in model container [2025-04-26 16:24:26,072 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:26,072 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:26" (2/2) ... [2025-04-26 16:24:26,073 INFO L376 chiAutomizerObserver]: Analyzing ICFG switch2.c.bpl [2025-04-26 16:24:26,122 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:24:26,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 25 transitions, 64 flow [2025-04-26 16:24:26,176 INFO L116 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-04-26 16:24:26,178 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:24:26,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 4/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 19. Up to 3 conditions per place. [2025-04-26 16:24:26,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 25 transitions, 64 flow [2025-04-26 16:24:26,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2025-04-26 16:24:26,187 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 24 places, 21 transitions, 54 flow [2025-04-26 16:24:26,197 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:26,197 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:26,197 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:26,197 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:26,197 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:26,197 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:26,197 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:26,198 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:26,199 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:26,223 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 44 [2025-04-26 16:24:26,223 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:26,224 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:26,226 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:26,227 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:24:26,227 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:26,227 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 61 states, but on-demand construction may add more states [2025-04-26 16:24:26,229 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 44 [2025-04-26 16:24:26,229 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:26,229 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:26,229 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:26,230 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:24:26,234 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" [2025-04-26 16:24:26,234 INFO L754 eck$LassoCheckResult]: Loop: "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[61] L24-->L25: Formula: (= (+ v_x1_3 v_d_2) v_x1_2) InVars {x1=v_x1_3, d=v_d_2} OutVars{x1=v_x1_2, d=v_d_2} AuxVars[] AssignedVars[x1]" "[63] L25-->L25-2: Formula: (< v_z_2 v_x1_5) InVars {x1=v_x1_5, z=v_z_2} OutVars{x1=v_x1_5, z=v_z_2} AuxVars[] AssignedVars[]" "[66] L25-2-->L29-1: Formula: (< v_x1_1 v_y_1) InVars {y=v_y_1, x1=v_x1_1} OutVars{y=v_y_1, x1=v_x1_1} AuxVars[] AssignedVars[]" [2025-04-26 16:24:26,237 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash 3436, now seen corresponding path program 1 times [2025-04-26 16:24:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:26,243 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780853999] [2025-04-26 16:24:26,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:26,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:26,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:26,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:26,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:26,291 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:26,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:26,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:26,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:26,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:26,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:26,306 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2741830, now seen corresponding path program 1 times [2025-04-26 16:24:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:26,306 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170348041] [2025-04-26 16:24:26,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:26,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:26,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:26,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:26,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:26,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:26,313 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:26,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:26,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:26,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:26,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:26,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:26,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:26,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1119930831, now seen corresponding path program 1 times [2025-04-26 16:24:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:26,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2825205] [2025-04-26 16:24:26,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:26,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:26,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:26,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:26,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:26,324 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:26,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:26,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:26,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:26,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:26,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:26,428 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:26,432 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:26,432 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:26,432 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:26,432 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:26,432 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,433 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:26,433 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:26,433 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration1_Lasso [2025-04-26 16:24:26,433 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:26,433 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:26,443 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:26,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:26,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:26,529 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:26,529 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:26,533 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 16:24:26,535 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 16:24:26,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:26,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:26,558 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:26,558 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:26,568 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 16:24:26,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:26,571 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 16:24:26,573 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 16:24:26,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:26,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:26,597 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:26,597 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f=1} Honda state: {f=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:26,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:26,643 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 16:24:26,644 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 16:24:26,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:26,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:26,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:26,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:26,667 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 16:24:26,668 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 16:24:26,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:26,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:26,887 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:26,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:24:26,893 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:26,894 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:26,894 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:26,894 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:26,894 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:26,894 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,894 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:26,894 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:26,894 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration1_Lasso [2025-04-26 16:24:26,894 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:26,894 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:26,895 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:26,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:26,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:26,956 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:26,959 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:26,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:26,962 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 16:24:26,963 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 16:24:26,965 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 16:24:26,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:26,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:26,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:26,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:26,985 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:24:26,986 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:24:26,991 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:26,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:26,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,000 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 16:24:27,002 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 16:24:27,003 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 16:24:27,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:27,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:27,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:27,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:27,015 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:24:27,015 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:24:27,020 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:27,025 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 16:24:27,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,028 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 16:24:27,029 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 16:24:27,032 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 16:24:27,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:27,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:27,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:27,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:27,071 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:24:27,071 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:24:27,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:27,093 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 16:24:27,093 INFO L437 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2025-04-26 16:24:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,097 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 16:24:27,098 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 16:24:27,099 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:27,120 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 16:24:27,121 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 16:24:27,121 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:27,121 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, d, x1) = 1*y - 1*d - 1*x1 Supporting invariants [1*d - 1 >= 0] [2025-04-26 16:24:27,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:24:27,136 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 16:24:27,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:27,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-26 16:24:27,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:27,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:27,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:27,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:27,216 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 16:24:27,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:27,263 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 16:24:27,301 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 16:24:27,322 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 61 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:27,439 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 61 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 219 states and 473 transitions. Complement of second has 7 states. [2025-04-26 16:24:27,442 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 16:24:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2025-04-26 16:24:27,450 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:27,450 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:27,450 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:24:27,450 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:27,450 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 2 letters. Loop has 8 letters. [2025-04-26 16:24:27,450 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:27,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 219 states and 473 transitions. [2025-04-26 16:24:27,458 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 66 [2025-04-26 16:24:27,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 219 states to 149 states and 335 transitions. [2025-04-26 16:24:27,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 83 [2025-04-26 16:24:27,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 97 [2025-04-26 16:24:27,468 INFO L74 IsDeterministic]: Start isDeterministic. Operand 149 states and 335 transitions. [2025-04-26 16:24:27,468 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:27,468 INFO L218 hiAutomatonCegarLoop]: Abstraction has 149 states and 335 transitions. [2025-04-26 16:24:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states and 335 transitions. [2025-04-26 16:24:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 111. [2025-04-26 16:24:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 2.3333333333333335) internal successors, (in total 259), 110 states have internal predecessors, (259), 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 16:24:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 259 transitions. [2025-04-26 16:24:27,491 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 259 transitions. [2025-04-26 16:24:27,491 INFO L438 stractBuchiCegarLoop]: Abstraction has 111 states and 259 transitions. [2025-04-26 16:24:27,491 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:27,491 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 259 transitions. [2025-04-26 16:24:27,492 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 56 [2025-04-26 16:24:27,492 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:27,492 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:27,492 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:27,492 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:27,493 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[75] L12-->L39: 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 16:24:27,493 INFO L754 eck$LassoCheckResult]: Loop: "[69] L39-->L41: Formula: (< v_x2_1 v_w_1) InVars {x2=v_x2_1, w=v_w_1} OutVars{x2=v_x2_1, w=v_w_1} AuxVars[] AssignedVars[]" "[71] L41-->L39: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 16:24:27,494 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash 3454, now seen corresponding path program 1 times [2025-04-26 16:24:27,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,494 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954925606] [2025-04-26 16:24:27,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,497 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:27,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 3171, now seen corresponding path program 1 times [2025-04-26 16:24:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,500 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586605492] [2025-04-26 16:24:27,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,504 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:27,507 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 3321504, now seen corresponding path program 1 times [2025-04-26 16:24:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,507 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131888952] [2025-04-26 16:24:27,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:27,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:27,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,512 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:27,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:27,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:27,530 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:27,530 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:27,530 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:27,530 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:27,530 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:27,530 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,530 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:27,530 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:27,530 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:27,530 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:27,530 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:27,531 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:27,547 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:27,547 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:27,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,551 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 16:24:27,552 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 16:24:27,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:27,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:27,571 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 16:24:27,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,573 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 16:24:27,574 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 16:24:27,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:27,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:27,640 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:27,644 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 16:24:27,644 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:27,644 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:27,644 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:27,644 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:27,644 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:27,644 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,644 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:27,644 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:27,644 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:27,644 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:27,644 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:27,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:27,660 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:27,661 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:27,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,663 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 16:24:27,664 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 16:24:27,664 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 16:24:27,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:27,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:27,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:27,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:27,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:27,675 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:27,675 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:27,681 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:27,688 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:27,688 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:27,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:27,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:27,691 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 16:24:27,692 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 16:24:27,694 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:27,697 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:27,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:27,698 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:27,698 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:27,698 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-04-26 16:24:27,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:24:27,705 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:27,718 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:27,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:27,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:27,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:27,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:27,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:27,730 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:27,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:27,747 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 16:24:27,747 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 16:24:27,747 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 259 transitions. cyclomatic complexity: 164 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:27,789 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 259 transitions. cyclomatic complexity: 164. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 305 states and 804 transitions. Complement of second has 6 states. [2025-04-26 16:24:27,789 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 16:24:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-04-26 16:24:27,790 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:27,790 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:27,790 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:27,790 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:27,790 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:27,790 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:27,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 305 states and 804 transitions. [2025-04-26 16:24:27,798 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 48 [2025-04-26 16:24:27,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 305 states to 211 states and 554 transitions. [2025-04-26 16:24:27,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 67 [2025-04-26 16:24:27,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2025-04-26 16:24:27,801 INFO L74 IsDeterministic]: Start isDeterministic. Operand 211 states and 554 transitions. [2025-04-26 16:24:27,801 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:27,801 INFO L218 hiAutomatonCegarLoop]: Abstraction has 211 states and 554 transitions. [2025-04-26 16:24:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 554 transitions. [2025-04-26 16:24:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 171. [2025-04-26 16:24:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 171 states have (on average 2.6842105263157894) internal successors, (in total 459), 170 states have internal predecessors, (459), 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 16:24:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 459 transitions. [2025-04-26 16:24:27,814 INFO L240 hiAutomatonCegarLoop]: Abstraction has 171 states and 459 transitions. [2025-04-26 16:24:27,814 INFO L438 stractBuchiCegarLoop]: Abstraction has 171 states and 459 transitions. [2025-04-26 16:24:27,814 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:27,814 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 171 states and 459 transitions. [2025-04-26 16:24:27,815 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 48 [2025-04-26 16:24:27,815 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:27,815 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:27,816 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:27,816 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-04-26 16:24:27,816 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 16:24:27,816 INFO L754 eck$LassoCheckResult]: Loop: "[61] L24-->L25: Formula: (= (+ v_x1_3 v_d_2) v_x1_2) InVars {x1=v_x1_3, d=v_d_2} OutVars{x1=v_x1_2, d=v_d_2} AuxVars[] AssignedVars[x1]" "[63] L25-->L25-2: Formula: (< v_z_2 v_x1_5) InVars {x1=v_x1_5, z=v_z_2} OutVars{x1=v_x1_5, z=v_z_2} AuxVars[] AssignedVars[]" "[65] L25-2-->L31: Formula: (<= v_y_2 v_x1_6) InVars {y=v_y_2, x1=v_x1_6} OutVars{y=v_y_2, x1=v_x1_6} AuxVars[] AssignedVars[]" "[67] L31-->L29-1: Formula: (= v_f_2 0) InVars {} OutVars{f=v_f_2} AuxVars[] AssignedVars[f]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 16:24:27,816 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash 106575, now seen corresponding path program 1 times [2025-04-26 16:24:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,816 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845269391] [2025-04-26 16:24:27,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:27,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:27,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,821 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:27,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:27,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:27,823 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 86905366, now seen corresponding path program 1 times [2025-04-26 16:24:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,823 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800054369] [2025-04-26 16:24:27,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:27,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:27,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:27,855 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 16:24:27,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:27,855 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800054369] [2025-04-26 16:24:27,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800054369] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:27,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:27,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:24:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235962097] [2025-04-26 16:24:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:27,859 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-04-26 16:24:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:27,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:27,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:27,861 INFO L87 Difference]: Start difference. First operand 171 states and 459 transitions. cyclomatic complexity: 306 Second operand has 3 states, 2 states have (on average 2.5) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:27,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:27,878 INFO L93 Difference]: Finished difference Result 245 states and 613 transitions. [2025-04-26 16:24:27,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 245 states and 613 transitions. [2025-04-26 16:24:27,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-04-26 16:24:27,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 245 states to 83 states and 199 transitions. [2025-04-26 16:24:27,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2025-04-26 16:24:27,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2025-04-26 16:24:27,884 INFO L74 IsDeterministic]: Start isDeterministic. Operand 83 states and 199 transitions. [2025-04-26 16:24:27,886 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:27,886 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 199 transitions. [2025-04-26 16:24:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 199 transitions. [2025-04-26 16:24:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-04-26 16:24:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 2.397590361445783) internal successors, (in total 199), 82 states have internal predecessors, (199), 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 16:24:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 199 transitions. [2025-04-26 16:24:27,889 INFO L240 hiAutomatonCegarLoop]: Abstraction has 83 states and 199 transitions. [2025-04-26 16:24:27,892 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:27,892 INFO L438 stractBuchiCegarLoop]: Abstraction has 83 states and 199 transitions. [2025-04-26 16:24:27,892 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:27,893 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 199 transitions. [2025-04-26 16:24:27,893 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-04-26 16:24:27,893 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:27,893 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:27,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:24:27,894 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:24:27,894 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" "[75] L12-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[68] L39-->L43: Formula: (<= v_w_2 v_x2_4) InVars {x2=v_x2_4, w=v_w_2} OutVars{x2=v_x2_4, w=v_w_2} AuxVars[] AssignedVars[]" "[70] L43-->thread2FINAL: Formula: (= (+ v_d_3 v_d_4) 0) InVars {d=v_d_4} OutVars{d=v_d_3} AuxVars[] AssignedVars[d]" [2025-04-26 16:24:27,894 INFO L754 eck$LassoCheckResult]: Loop: "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[61] L24-->L25: Formula: (= (+ v_x1_3 v_d_2) v_x1_2) InVars {x1=v_x1_3, d=v_d_2} OutVars{x1=v_x1_2, d=v_d_2} AuxVars[] AssignedVars[x1]" "[63] L25-->L25-2: Formula: (< v_z_2 v_x1_5) InVars {x1=v_x1_5, z=v_z_2} OutVars{x1=v_x1_5, z=v_z_2} AuxVars[] AssignedVars[]" "[66] L25-2-->L29-1: Formula: (< v_x1_1 v_y_1) InVars {y=v_y_1, x1=v_x1_1} OutVars{y=v_y_1, x1=v_x1_1} AuxVars[] AssignedVars[]" [2025-04-26 16:24:27,894 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash 102436129, now seen corresponding path program 1 times [2025-04-26 16:24:27,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,894 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448269350] [2025-04-26 16:24:27,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:27,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:27,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,900 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:27,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:27,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:27,907 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2741830, now seen corresponding path program 2 times [2025-04-26 16:24:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,907 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835929995] [2025-04-26 16:24:27,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 16:24:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,911 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:27,917 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:27,917 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 16:24:27,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,917 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:27,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:27,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:27,921 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash 968446822, now seen corresponding path program 1 times [2025-04-26 16:24:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:27,921 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118456412] [2025-04-26 16:24:27,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:27,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:24:27,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:24:27,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,930 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:27,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:24:27,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:24:27,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:27,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:27,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:28,002 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:28,002 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:28,002 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:28,002 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:28,002 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:28,002 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,002 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:28,003 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:28,003 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration4_Lasso [2025-04-26 16:24:28,003 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:28,003 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:28,003 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,087 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:28,087 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:28,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,090 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 16:24:28,092 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 16:24:28,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:28,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:28,106 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:28,107 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar1=0} Honda state: {thread2Thread1of1ForFork0_thidvar1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:28,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:24:28,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,114 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 16:24:28,116 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 16:24:28,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:28,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:28,129 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:28,129 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar0=0} Honda state: {thread2Thread1of1ForFork0_thidvar0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:28,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:28,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,137 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 16:24:28,139 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 16:24:28,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:28,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:28,151 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:28,152 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:24:28,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:28,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,160 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 16:24:28,160 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 16:24:28,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:28,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:28,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:28,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,182 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 16:24:28,183 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 16:24:28,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:28,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:28,393 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:28,400 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 16:24:28,400 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:28,400 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:28,400 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:28,400 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:28,401 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:28,401 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,401 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:28,401 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:28,401 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration4_Lasso [2025-04-26 16:24:28,401 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:28,401 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:28,402 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,405 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,426 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:28,477 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:28,477 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:28,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,480 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 16:24:28,481 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 16:24:28,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:28,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:28,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:28,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:28,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:28,493 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:24:28,493 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:24:28,496 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:28,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:28,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:28,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:24:28,506 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 16:24:28,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:28,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:28,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:28,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:28,518 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:24:28,518 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:24:28,523 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:28,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:28,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:28,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:24:28,534 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 16:24:28,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:28,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:28,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:28,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:28,546 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:24:28,547 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:24:28,551 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:28,556 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:28,556 INFO L437 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:28,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:28,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:28,558 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:28,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:24:28,560 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:28,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:24:28,576 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 16:24:28,576 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:28,576 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(d, z, x1) = 1*d - 1*z + 1*x1 Supporting invariants [-1*d - 1 >= 0] [2025-04-26 16:24:28,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:24:28,584 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 16:24:28,603 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:28,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:28,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:28,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:28,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:28,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:28,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:28,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:28,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:28,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:28,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:28,633 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 16:24:28,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:28,670 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 16:24:28,671 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2025-04-26 16:24:28,671 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 199 transitions. cyclomatic complexity: 128 Second operand has 6 states, 6 states have (on average 1.5) internal successors, (in total 9), 6 states have internal predecessors, (9), 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 16:24:28,725 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 199 transitions. cyclomatic complexity: 128. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (in total 9), 6 states have internal predecessors, (9), 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 105 states and 241 transitions. Complement of second has 7 states. [2025-04-26 16:24:28,726 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (in total 9), 6 states have internal predecessors, (9), 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 16:24:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2025-04-26 16:24:28,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:24:28,726 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:28,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 9 letters. Loop has 4 letters. [2025-04-26 16:24:28,727 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:28,727 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 8 letters. [2025-04-26 16:24:28,727 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:28,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 241 transitions. [2025-04-26 16:24:28,728 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:28,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 0 states and 0 transitions. [2025-04-26 16:24:28,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:28,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:28,728 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:28,728 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:28,728 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:28,728 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:28,728 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:28,728 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:24:28,728 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:28,728 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:28,728 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:28,734 INFO L201 PluginConnector]: Adding new model switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:28 BoogieIcfgContainer [2025-04-26 16:24:28,734 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:28,735 INFO L158 Benchmark]: Toolchain (without parser) took 2897.65ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 87.1MB in the beginning and 101.9MB in the end (delta: -14.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:28,736 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.79ms. Allocated memory is still 159.4MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:28,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.98ms. Allocated memory is still 159.4MB. Free memory was 87.0MB in the beginning and 85.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:28,737 INFO L158 Benchmark]: Boogie Preprocessor took 22.35ms. Allocated memory is still 159.4MB. Free memory was 85.1MB in the beginning and 84.1MB in the end (delta: 998.5kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:28,737 INFO L158 Benchmark]: RCFGBuilder took 173.63ms. Allocated memory is still 159.4MB. Free memory was 84.1MB in the beginning and 75.2MB in the end (delta: 8.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:28,739 INFO L158 Benchmark]: BuchiAutomizer took 2670.43ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.1MB in the beginning and 101.9MB in the end (delta: -26.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:28,739 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 0.79ms. Allocated memory is still 159.4MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.98ms. Allocated memory is still 159.4MB. Free memory was 87.0MB in the beginning and 85.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 22.35ms. Allocated memory is still 159.4MB. Free memory was 85.1MB in the beginning and 84.1MB in the end (delta: 998.5kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 173.63ms. Allocated memory is still 159.4MB. Free memory was 84.1MB in the beginning and 75.2MB in the end (delta: 8.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 2670.43ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.1MB in the beginning and 101.9MB in the end (delta: -26.8MB). 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 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 78 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 94 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital28 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf95 smp100 dnf100 smp100 tf103 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * d + -1 * x1 + y and consists of 4 locations. One deterministic module has affine ranking function w + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * z + x1 + d and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:28,752 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...