/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/varied-delta.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:52,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:52,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:52,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:52,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:52,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:52,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:52,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:52,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:52,746 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:52,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:52,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:52,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:52,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:52,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:52,748 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:52,749 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 22:48:52,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:52,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:52,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:52,976 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:52,977 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:52,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/varied-delta.c.bpl [2025-02-17 22:48:52,978 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/varied-delta.c.bpl' [2025-02-17 22:48:52,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:52,990 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:52,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:52,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:52,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:52,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,005 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:53,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:53,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:53,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:53,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:53,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,012 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:53,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:53,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:53,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:53,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/1) ... [2025-02-17 22:48:53,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,038 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 22:48:53,040 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 22:48:53,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:53,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:53,057 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:53,058 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 22:48:53,089 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:53,090 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:53,137 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:53,137 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:53,148 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:53,148 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:53,149 INFO L201 PluginConnector]: Adding new model varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:53 BoogieIcfgContainer [2025-02-17 22:48:53,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:53,151 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:53,151 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:53,155 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:53,155 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:53,155 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:52" (1/2) ... [2025-02-17 22:48:53,156 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5069289f and model type varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:53, skipping insertion in model container [2025-02-17 22:48:53,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:53,156 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:53" (2/2) ... [2025-02-17 22:48:53,157 INFO L363 chiAutomizerObserver]: Analyzing ICFG varied-delta.c.bpl [2025-02-17 22:48:53,198 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:53,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 18 transitions, 50 flow [2025-02-17 22:48:53,260 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-02-17 22:48:53,261 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:53,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-02-17 22:48:53,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 18 transitions, 50 flow [2025-02-17 22:48:53,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 14 transitions, 40 flow [2025-02-17 22:48:53,276 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:53,365 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:53,365 INFO L101 AmpleReduction]: Number of pruned transitions: 5, Number of non-trivial ample sets: 14 [2025-02-17 22:48:53,365 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 13 [2025-02-17 22:48:53,371 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:53,371 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:53,371 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:53,371 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:53,371 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:53,371 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:53,371 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:53,371 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:53,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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 22:48:53,381 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-02-17 22:48:53,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:53,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:53,384 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:53,384 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:53,384 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:53,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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 22:48:53,385 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-02-17 22:48:53,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:53,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:53,386 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:53,386 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:53,389 INFO L752 eck$LassoCheckResult]: Stem: "[30] $Ultimate##0-->L12: Formula: (< 0 v_d_6) InVars {d=v_d_6} OutVars{d=v_d_6} AuxVars[] AssignedVars[]" "[47] L12-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-02-17 22:48:53,389 INFO L754 eck$LassoCheckResult]: Loop: "[35] L21-->L23: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[37] L23-->L21: Formula: (= v_x1_2 (+ v_x1_3 v_d_1)) InVars {x1=v_x1_3, d=v_d_1} OutVars{x1=v_x1_2, d=v_d_1} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:53,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1938, now seen corresponding path program 1 times [2025-02-17 22:48:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279221816] [2025-02-17 22:48:53,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,447 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2083, now seen corresponding path program 1 times [2025-02-17 22:48:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846001973] [2025-02-17 22:48:53,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,472 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1863540, now seen corresponding path program 1 times [2025-02-17 22:48:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045947419] [2025-02-17 22:48:53,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:53,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:53,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:53,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,490 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:53,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:53,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:53,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:53,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:53,560 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:53,561 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:53,561 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:53,561 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:53,562 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:53,562 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,562 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:53,562 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:53,562 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration1_Lasso [2025-02-17 22:48:53,562 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:53,562 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:53,574 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,634 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:53,634 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:53,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,638 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 22:48:53,640 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 22:48:53,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:53,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:53,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:53,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,663 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 22:48:53,664 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 22:48:53,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:53,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:53,806 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:53,811 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 22:48:53,812 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:53,812 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:53,812 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:53,812 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:53,812 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:53,812 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,812 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:53,812 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:53,812 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration1_Lasso [2025-02-17 22:48:53,812 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:53,812 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:53,813 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 L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:53,859 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:53,862 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,866 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 22:48:53,867 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 22:48:53,870 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 22:48:53,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:53,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:53,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:53,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:53,894 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:53,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:53,902 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:53,914 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-02-17 22:48:53,914 INFO L444 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 4 variables to zero. [2025-02-17 22:48:53,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:53,918 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 22:48:53,919 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 22:48:53,923 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:53,935 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:53,936 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:53,936 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [1*d - 1 >= 0] [2025-02-17 22:48:53,942 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 22:48:53,946 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:53,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:53,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:53,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:53,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:53,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:53,985 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-17 22:48:53,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:54,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:54,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:54,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:54,013 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:54,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:54,064 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 22:48:54,072 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2025-02-17 22:48:54,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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 1.0) 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 22:48:54,196 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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 1.0) 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 66 states and 128 transitions. Complement of second has 7 states. [2025-02-17 22:48:54,197 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 22:48:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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 22:48:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2025-02-17 22:48:54,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:48:54,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:54,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:48:54,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 128 transitions. [2025-02-17 22:48:54,229 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-02-17 22:48:54,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 30 states and 61 transitions. [2025-02-17 22:48:54,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2025-02-17 22:48:54,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2025-02-17 22:48:54,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 61 transitions. [2025-02-17 22:48:54,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:54,235 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 61 transitions. [2025-02-17 22:48:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 61 transitions. [2025-02-17 22:48:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2025-02-17 22:48:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 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 22:48:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 49 transitions. [2025-02-17 22:48:54,250 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 49 transitions. [2025-02-17 22:48:54,250 INFO L432 stractBuchiCegarLoop]: Abstraction has 24 states and 49 transitions. [2025-02-17 22:48:54,250 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:54,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 49 transitions. [2025-02-17 22:48:54,250 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-02-17 22:48:54,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:54,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:54,251 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:48:54,251 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:54,251 INFO L752 eck$LassoCheckResult]: Stem: "[30] $Ultimate##0-->L12: Formula: (< 0 v_d_6) InVars {d=v_d_6} OutVars{d=v_d_6} AuxVars[] AssignedVars[]" "[47] L12-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[35] L21-->L23: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[44] L12-1-->L30: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-02-17 22:48:54,251 INFO L754 eck$LassoCheckResult]: Loop: "[39] L30-->L32: Formula: (< v_d_2 v_w_1) InVars {d=v_d_2, w=v_w_1} OutVars{d=v_d_2, w=v_w_1} AuxVars[] AssignedVars[]" "[41] L32-->L30: Formula: (= v_d_3 (+ v_d_4 1)) InVars {d=v_d_4} OutVars{d=v_d_3} AuxVars[] AssignedVars[d]" [2025-02-17 22:48:54,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1863547, now seen corresponding path program 1 times [2025-02-17 22:48:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:54,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493106175] [2025-02-17 22:48:54,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:54,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:54,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:54,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,255 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:54,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:54,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:54,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:54,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2211, now seen corresponding path program 1 times [2025-02-17 22:48:54,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:54,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982883929] [2025-02-17 22:48:54,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:54,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:54,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:54,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,261 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:54,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:54,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:54,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:54,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1790869917, now seen corresponding path program 1 times [2025-02-17 22:48:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118908098] [2025-02-17 22:48:54,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:54,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:54,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:54,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,267 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:54,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:54,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:54,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:54,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:54,282 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:54,283 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:54,283 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:54,283 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:54,283 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:54,283 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,283 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:54,283 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:54,283 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:54,283 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:54,283 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:54,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,301 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:54,302 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,304 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 22:48:54,305 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 22:48:54,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:54,307 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:48:54,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,328 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 22:48:54,329 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 22:48:54,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:54,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:54,395 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:54,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:54,400 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:54,400 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:54,400 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:54,400 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:54,400 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:54,400 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,400 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:54,400 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:54,400 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:54,400 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:54,400 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:54,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:54,416 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:54,416 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:54,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,418 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 22:48:54,420 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 22:48:54,421 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 22:48:54,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:54,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:54,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:54,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:54,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:54,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:54,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:54,435 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:54,438 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:54,438 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:54,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:54,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:54,441 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 22:48:54,442 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 22:48:54,443 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:54,443 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:54,443 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:54,443 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(d, w) = -1*d + 1*w Supporting invariants [] [2025-02-17 22:48:54,450 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 22:48:54,451 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:54,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:54,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:54,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:54,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:54,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:54,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:54,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:54,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:54,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:54,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:54,478 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:54,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:54,490 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 22:48:54,491 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 22:48:54,491 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 49 transitions. cyclomatic complexity: 32 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 22:48:54,516 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 49 transitions. cyclomatic complexity: 32. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 60 states and 123 transitions. Complement of second has 6 states. [2025-02-17 22:48:54,517 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 22:48:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 22:48:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2025-02-17 22:48:54,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:54,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:48:54,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:48:54,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:54,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 123 transitions. [2025-02-17 22:48:54,520 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:54,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 0 states and 0 transitions. [2025-02-17 22:48:54,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:54,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:54,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:54,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:54,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:54,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:54,521 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:54,521 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:54,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:54,521 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:54,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:54,527 INFO L201 PluginConnector]: Adding new model varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:54 BoogieIcfgContainer [2025-02-17 22:48:54,527 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:54,528 INFO L158 Benchmark]: Toolchain (without parser) took 1537.53ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 86.4MB in the beginning and 90.5MB in the end (delta: -4.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,528 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.25ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 85.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,528 INFO L158 Benchmark]: Boogie Preprocessor took 8.27ms. Allocated memory is still 159.4MB. Free memory was 85.0MB in the beginning and 84.4MB in the end (delta: 604.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,528 INFO L158 Benchmark]: RCFGBuilder took 133.80ms. Allocated memory is still 159.4MB. Free memory was 84.3MB in the beginning and 76.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:48:54,529 INFO L158 Benchmark]: BuchiAutomizer took 1376.22ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 75.9MB in the beginning and 90.5MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:54,529 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 87.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 15.25ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 85.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 8.27ms. Allocated memory is still 159.4MB. Free memory was 85.0MB in the beginning and 84.4MB in the end (delta: 604.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 133.80ms. Allocated memory is still 159.4MB. Free memory was 84.3MB in the beginning and 76.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1376.22ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 75.9MB in the beginning and 90.5MB in the end (delta: -14.7MB). 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * d + w and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 15 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp88 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 73ms VariablesStem: 1 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 142, Trivial Ample Sets caused by loops: 13, Number of non-trivial ample sets: 14, Number of pruned transitions: 5, Number of transitions in reduction automaton: 47, Number of states in reduction automaton: 28, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:54,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-17 22:48:54,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...