/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 --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -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-601be74-m [2025-02-17 22:48:51,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:51,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:51,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:51,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:51,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:51,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:51,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:51,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:51,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:51,799 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:51,799 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:51,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:51,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:51,801 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:51,801 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:51,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:51,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:51,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:51,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:51,801 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:51,801 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:48:52,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:52,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:52,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:52,043 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:52,043 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:52,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/switch2.c.bpl [2025-02-17 22:48:52,044 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/switch2.c.bpl' [2025-02-17 22:48:52,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:52,057 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:52,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:52,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:52,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:52,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,075 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:52,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:52,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:52,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:52,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:52,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,084 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:52,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:52,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:52,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:52,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:52,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:52,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:48:52,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:52,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:52,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:52,146 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:48:52,183 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:52,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:52,254 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:52,254 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:52,265 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:52,265 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:52,266 INFO L201 PluginConnector]: Adding new model switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:52 BoogieIcfgContainer [2025-02-17 22:48:52,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:52,267 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:52,268 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:52,272 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:52,273 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:52,273 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/2) ... [2025-02-17 22:48:52,274 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d021c5c and model type switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:52, skipping insertion in model container [2025-02-17 22:48:52,274 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:52,274 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:52" (2/2) ... [2025-02-17 22:48:52,275 INFO L363 chiAutomizerObserver]: Analyzing ICFG switch2.c.bpl [2025-02-17 22:48:52,326 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:52,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 25 transitions, 64 flow [2025-02-17 22:48:52,388 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-02-17 22:48:52,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:52,393 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. [2025-02-17 22:48:52,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 25 transitions, 64 flow [2025-02-17 22:48:52,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2025-02-17 22:48:52,402 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:52,542 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:52,542 INFO L101 AmpleReduction]: Number of pruned transitions: 27, Number of non-trivial ample sets: 40 [2025-02-17 22:48:52,542 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 27 [2025-02-17 22:48:52,548 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:52,548 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:52,548 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:52,548 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:52,548 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:52,548 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:52,548 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:52,548 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:52,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 57 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:52,561 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 40 [2025-02-17 22:48:52,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:52,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:52,567 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:52,567 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:48:52,567 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:52,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 57 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:52,569 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 40 [2025-02-17 22:48:52,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:52,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:52,571 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:52,571 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:48:52,575 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] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" [2025-02-17 22:48:52,575 INFO L754 eck$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[]" [2025-02-17 22:48:52,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,579 INFO L85 PathProgramCache]: Analyzing trace with hash 3436, now seen corresponding path program 1 times [2025-02-17 22:48:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108242238] [2025-02-17 22:48:52,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,631 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2741830, now seen corresponding path program 1 times [2025-02-17 22:48:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957086767] [2025-02-17 22:48:52,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:52,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:52,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,652 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:52,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:52,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1119930831, now seen corresponding path program 1 times [2025-02-17 22:48:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802734308] [2025-02-17 22:48:52,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:52,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:52,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,665 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:52,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:52,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,760 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:52,764 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:52,764 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:52,764 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:52,764 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:52,764 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,765 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:52,765 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:52,765 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration1_Lasso [2025-02-17 22:48:52,765 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:52,765 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:52,777 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,786 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,791 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,853 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:52,854 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:52,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:52,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:48:52,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:52,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,881 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:52,881 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:52,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:48:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:52,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:48:52,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:52,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,912 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:52,912 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f=1} Honda state: {f=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:52,918 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 [2025-02-17 22:48:52,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:52,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:48:52,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:52,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:52,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:48:52,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:52,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:53,177 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:53,184 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 [2025-02-17 22:48:53,184 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:53,184 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:53,184 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:53,184 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:53,184 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:53,184 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,184 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:53,185 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:53,185 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration1_Lasso [2025-02-17 22:48:53,185 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:53,185 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:53,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,193 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,255 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:53,258 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:53,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:48:53,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:53,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:53,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:53,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:53,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:53,285 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:53,285 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:53,290 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:53,295 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 [2025-02-17 22:48:53,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:48:53,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:53,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:53,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:53,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:53,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:53,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:53,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:53,315 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:53,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:48:53,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:48:53,325 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:53,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:53,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:53,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:53,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:53,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:53,340 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:53,346 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:53,353 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-02-17 22:48:53,353 INFO L444 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:53,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:48:53,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:53,373 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:53,373 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:53,373 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, x1, d) = 1*y - 1*x1 - 1*d Supporting invariants [1*d - 1 >= 0] [2025-02-17 22:48:53,379 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 [2025-02-17 22:48:53,383 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:53,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:53,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-17 22:48:53,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:53,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:53,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:53,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:53,446 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:53,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:53,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:53,545 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:48:53,547 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 57 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:53,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 57 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 56 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 203 states and 343 transitions. Complement of second has 7 states. [2025-02-17 22:48:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2025-02-17 22:48:53,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 42 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:48:53,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:53,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 42 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:48:53,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:53,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 42 transitions. Stem has 2 letters. Loop has 8 letters. [2025-02-17 22:48:53,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:53,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2025-02-17 22:48:53,645 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 62 [2025-02-17 22:48:53,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 134 states and 237 transitions. [2025-02-17 22:48:53,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2025-02-17 22:48:53,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2025-02-17 22:48:53,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 237 transitions. [2025-02-17 22:48:53,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:53,650 INFO L218 hiAutomatonCegarLoop]: Abstraction has 134 states and 237 transitions. [2025-02-17 22:48:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states and 237 transitions. [2025-02-17 22:48:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 99. [2025-02-17 22:48:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 99 states have (on average 1.7575757575757576) internal successors, (174), 98 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 174 transitions. [2025-02-17 22:48:53,668 INFO L240 hiAutomatonCegarLoop]: Abstraction has 99 states and 174 transitions. [2025-02-17 22:48:53,668 INFO L432 stractBuchiCegarLoop]: Abstraction has 99 states and 174 transitions. [2025-02-17 22:48:53,668 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:53,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 174 transitions. [2025-02-17 22:48:53,669 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 52 [2025-02-17 22:48:53,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:53,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:53,670 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:53,670 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:53,670 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]" [2025-02-17 22:48:53,670 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]" [2025-02-17 22:48:53,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash 3454, now seen corresponding path program 1 times [2025-02-17 22:48:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578887278] [2025-02-17 22:48:53,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,673 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 3171, now seen corresponding path program 1 times [2025-02-17 22:48:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493380507] [2025-02-17 22:48:53,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,677 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,679 INFO L85 PathProgramCache]: Analyzing trace with hash 3321504, now seen corresponding path program 1 times [2025-02-17 22:48:53,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472673214] [2025-02-17 22:48:53,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:53,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:53,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,682 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:53,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:53,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,698 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:53,698 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:53,698 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:53,698 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:53,698 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:53,698 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,698 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:53,698 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:53,698 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:53,698 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:53,698 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:53,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,714 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:53,714 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:53,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,716 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:48:53,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:53,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:53,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:48:53,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:48:53,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:53,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:53,804 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:53,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:48:53,808 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:53,808 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:53,808 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:53,808 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:53,808 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:53,808 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,808 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:53,808 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:53,808 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:53,808 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:53,808 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:53,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,824 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:53,824 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:53,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:48:53,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:53,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:53,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:53,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:53,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:53,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:53,839 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:53,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:53,841 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:53,843 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:53,843 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:53,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,845 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:53,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:48:53,847 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:53,847 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:53,848 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:53,848 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-02-17 22:48:53,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:53,854 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:53,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:53,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:53,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:53,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:53,875 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:53,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:53,886 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:48:53,886 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 174 transitions. cyclomatic complexity: 91 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:53,911 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 174 transitions. cyclomatic complexity: 91. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 233 states and 442 transitions. Complement of second has 6 states. [2025-02-17 22:48:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2025-02-17 22:48:53,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:48:53,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:53,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:53,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:53,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:48:53,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:53,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 233 states and 442 transitions. [2025-02-17 22:48:53,924 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 42 [2025-02-17 22:48:53,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 233 states to 137 states and 252 transitions. [2025-02-17 22:48:53,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2025-02-17 22:48:53,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2025-02-17 22:48:53,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 252 transitions. [2025-02-17 22:48:53,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:53,926 INFO L218 hiAutomatonCegarLoop]: Abstraction has 137 states and 252 transitions. [2025-02-17 22:48:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 252 transitions. [2025-02-17 22:48:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2025-02-17 22:48:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 127 states have (on average 1.8503937007874016) internal successors, (235), 126 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 235 transitions. [2025-02-17 22:48:53,936 INFO L240 hiAutomatonCegarLoop]: Abstraction has 127 states and 235 transitions. [2025-02-17 22:48:53,936 INFO L432 stractBuchiCegarLoop]: Abstraction has 127 states and 235 transitions. [2025-02-17 22:48:53,936 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:53,936 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 127 states and 235 transitions. [2025-02-17 22:48:53,937 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 42 [2025-02-17 22:48:53,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:53,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:53,938 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:53,938 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:53,938 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] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-02-17 22:48:53,938 INFO L754 eck$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[]" [2025-02-17 22:48:53,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,939 INFO L85 PathProgramCache]: Analyzing trace with hash 106575, now seen corresponding path program 1 times [2025-02-17 22:48:53,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844687732] [2025-02-17 22:48:53,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:53,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:53,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,943 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:53,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:53,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,946 INFO L85 PathProgramCache]: Analyzing trace with hash 86905366, now seen corresponding path program 1 times [2025-02-17 22:48:53,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696203009] [2025-02-17 22:48:53,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:53,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:53,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:53,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:53,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696203009] [2025-02-17 22:48:53,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696203009] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:53,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:53,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:48:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252268814] [2025-02-17 22:48:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:53,983 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-17 22:48:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:53,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:48:53,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:48:53,985 INFO L87 Difference]: Start difference. First operand 127 states and 235 transitions. cyclomatic complexity: 124 Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:54,004 INFO L93 Difference]: Finished difference Result 179 states and 297 transitions. [2025-02-17 22:48:54,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 179 states and 297 transitions. [2025-02-17 22:48:54,006 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-02-17 22:48:54,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 179 states to 61 states and 113 transitions. [2025-02-17 22:48:54,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2025-02-17 22:48:54,007 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2025-02-17 22:48:54,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 113 transitions. [2025-02-17 22:48:54,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:54,007 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 113 transitions. [2025-02-17 22:48:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 113 transitions. [2025-02-17 22:48:54,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-02-17 22:48:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.8524590163934427) internal successors, (113), 60 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 113 transitions. [2025-02-17 22:48:54,014 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 113 transitions. [2025-02-17 22:48:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:48:54,017 INFO L432 stractBuchiCegarLoop]: Abstraction has 61 states and 113 transitions. [2025-02-17 22:48:54,017 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:54,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 113 transitions. [2025-02-17 22:48:54,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-02-17 22:48:54,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:54,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:54,018 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:54,018 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:48:54,018 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]" "[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[]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" "[70] L43-->thread2FINAL: Formula: (= (+ v_d_3 v_d_4) 0) InVars {d=v_d_4} OutVars{d=v_d_3} AuxVars[] AssignedVars[d]" [2025-02-17 22:48:54,018 INFO L754 eck$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[]" [2025-02-17 22:48:54,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 102965299, now seen corresponding path program 1 times [2025-02-17 22:48:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:54,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807156410] [2025-02-17 22:48:54,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:54,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:54,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:54,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,022 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:54,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:54,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:54,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:54,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2741830, now seen corresponding path program 2 times [2025-02-17 22:48:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:54,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930012491] [2025-02-17 22:48:54,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:48:54,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:54,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:54,033 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:54,033 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:48:54,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,033 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:54,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:54,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:54,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:54,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 41782648, now seen corresponding path program 1 times [2025-02-17 22:48:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:54,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790144549] [2025-02-17 22:48:54,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:54,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:54,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-17 22:48:54,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-17 22:48:54,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,046 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:54,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-17 22:48:54,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-17 22:48:54,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:54,110 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:54,110 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:54,110 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:54,110 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:54,110 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:54,110 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,110 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:54,110 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:54,110 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration4_Lasso [2025-02-17 22:48:54,110 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:54,110 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:54,111 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,113 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,119 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,187 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:54,187 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:54,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,189 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) [2025-02-17 22:48:54,190 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 [2025-02-17 22:48:54,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,203 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:54,203 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:54,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:54,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,211 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) [2025-02-17 22:48:54,212 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 [2025-02-17 22:48:54,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,223 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:54,223 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar0=0} Honda state: {thread2Thread1of1ForFork0_thidvar0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:54,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:48:54,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,230 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) [2025-02-17 22:48:54,231 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 [2025-02-17 22:48:54,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,249 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:54,249 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {w=0, x2=0} Honda state: {w=0, x2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:54,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:48:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,256 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) [2025-02-17 22:48:54,257 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 [2025-02-17 22:48:54,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,268 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:54,268 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar1=0} Honda state: {thread2Thread1of1ForFork0_thidvar1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:54,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:48:54,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,275 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) [2025-02-17 22:48:54,276 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 [2025-02-17 22:48:54,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,293 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:54,293 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f=1} Honda state: {f=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:54,299 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 [2025-02-17 22:48:54,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,301 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) [2025-02-17 22:48:54,302 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 [2025-02-17 22:48:54,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,320 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 [2025-02-17 22:48:54,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,322 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) [2025-02-17 22:48:54,323 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 [2025-02-17 22:48:54,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:54,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,529 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:54,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:48:54,537 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:54,537 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:54,537 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:54,537 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:54,537 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:54,537 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,537 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:54,537 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:54,537 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration4_Lasso [2025-02-17 22:48:54,537 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:54,537 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:54,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,612 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:54,613 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:54,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,615 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) [2025-02-17 22:48:54,616 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 [2025-02-17 22:48:54,617 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:54,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:54,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:54,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:54,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:54,628 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:54,628 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:54,631 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:54,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:54,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,638 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) [2025-02-17 22:48:54,640 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 [2025-02-17 22:48:54,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:54,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:54,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:54,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:54,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:54,654 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:54,654 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:54,657 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:54,662 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 [2025-02-17 22:48:54,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,664 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:54,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:48:54,666 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:54,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:54,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:54,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:54,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:54,677 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:54,677 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:54,680 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:54,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-02-17 22:48:54,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,699 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:54,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:48:54,703 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:54,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:54,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:54,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:54,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:54,714 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:54,714 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:54,716 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:54,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-02-17 22:48:54,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,723 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:54,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:48:54,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:54,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:54,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:54,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:54,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:54,738 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:54,738 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:54,743 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:54,750 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-02-17 22:48:54,750 INFO L444 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:54,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:54,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:48:54,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:54,765 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:54,765 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:54,765 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1, d) = -1*z + 1*x1 + 1*d Supporting invariants [-1*d - 1 >= 0] [2025-02-17 22:48:54,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-17 22:48:54,778 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:54,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:54,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:54,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:54,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:54,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:54,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:54,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:54,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:54,819 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:54,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:54,859 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 [2025-02-17 22:48:54,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:54,877 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 [2025-02-17 22:48:54,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 113 transitions. cyclomatic complexity: 62 Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:54,921 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 113 transitions. cyclomatic complexity: 62. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 72 states and 128 transitions. Complement of second has 7 states. [2025-02-17 22:48:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2025-02-17 22:48:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:48:54,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2025-02-17 22:48:54,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 8 letters. [2025-02-17 22:48:54,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 128 transitions. [2025-02-17 22:48:54,924 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:54,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 0 states and 0 transitions. [2025-02-17 22:48:54,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:54,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:54,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:54,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:54,924 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:54,924 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:54,924 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:54,924 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:48:54,924 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:54,924 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:54,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:54,932 INFO L201 PluginConnector]: Adding new model switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:54 BoogieIcfgContainer [2025-02-17 22:48:54,932 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:54,932 INFO L158 Benchmark]: Toolchain (without parser) took 2874.82ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 86.6MB in the beginning and 94.7MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,932 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.51ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 85.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,933 INFO L158 Benchmark]: Boogie Preprocessor took 12.48ms. Allocated memory is still 159.4MB. Free memory was 85.2MB in the beginning and 84.7MB in the end (delta: 560.5kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,933 INFO L158 Benchmark]: RCFGBuilder took 175.92ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 75.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:48:54,933 INFO L158 Benchmark]: BuchiAutomizer took 2664.20ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.8MB in the beginning and 94.7MB in the end (delta: -18.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,934 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 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.51ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 85.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 12.48ms. Allocated memory is still 159.4MB. Free memory was 85.2MB in the beginning and 84.7MB in the end (delta: 560.5kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 175.92ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 75.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2664.20ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.8MB in the beginning and 94.7MB in the end (delta: -18.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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. - 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, 45 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, 98 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 81 mSDtfsCounter, 67 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: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 192, Trivial Ample Sets caused by loops: 27, Number of non-trivial ample sets: 40, Number of pruned transitions: 27, Number of transitions in reduction automaton: 95, Number of states in reduction automaton: 57, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:54,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...