/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/adfg_2_x_indep.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:34,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:34,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:34,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:34,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:34,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:34,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:34,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:34,273 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:34,273 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:34,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:34,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:34,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:34,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:34,275 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:34,275 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 22:48:34,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:34,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:34,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:34,500 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:34,501 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:34,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/adfg_2_x_indep.c.bpl [2025-02-17 22:48:34,503 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/adfg_2_x_indep.c.bpl' [2025-02-17 22:48:34,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:34,518 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:34,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:34,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:34,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:34,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,538 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:34,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:34,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:34,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:34,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:34,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,549 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:34,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:34,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:34,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:34,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/1) ... [2025-02-17 22:48:34,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:34,582 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 22:48:34,586 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 22:48:34,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:34,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:34,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:34,607 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 22:48:34,644 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:34,645 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:34,699 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:34,699 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:34,707 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:34,708 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:34,708 INFO L201 PluginConnector]: Adding new model adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:34 BoogieIcfgContainer [2025-02-17 22:48:34,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:34,709 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:34,709 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:34,712 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:34,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:34,713 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:34" (1/2) ... [2025-02-17 22:48:34,714 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d913606 and model type adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:34, skipping insertion in model container [2025-02-17 22:48:34,714 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:34,714 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:34" (2/2) ... [2025-02-17 22:48:34,715 INFO L363 chiAutomizerObserver]: Analyzing ICFG adfg_2_x_indep.c.bpl [2025-02-17 22:48:34,767 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:34,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 31 transitions, 76 flow [2025-02-17 22:48:34,832 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2025-02-17 22:48:34,833 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:34,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 6/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2025-02-17 22:48:34,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 31 transitions, 76 flow [2025-02-17 22:48:34,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 27 transitions, 66 flow [2025-02-17 22:48:34,846 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:35,147 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:35,149 INFO L101 AmpleReduction]: Number of pruned transitions: 35, Number of non-trivial ample sets: 64 [2025-02-17 22:48:35,149 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 52 [2025-02-17 22:48:35,155 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:35,155 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:35,155 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:35,155 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:35,155 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:35,155 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:35,155 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:35,155 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:35,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 85 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 84 states have internal predecessors, (160), 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 22:48:35,174 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 56 [2025-02-17 22:48:35,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:35,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:35,179 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:35,179 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:35,179 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:35,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 85 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 84 states have internal predecessors, (160), 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 22:48:35,183 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 56 [2025-02-17 22:48:35,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:35,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:35,184 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:35,184 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:35,188 INFO L752 eck$LassoCheckResult]: Stem: "[100] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[76] $Ultimate##0-->L24: Formula: (<= 1 v_b_2) InVars {b=v_b_2} OutVars{b=v_b_2} AuxVars[] AssignedVars[]" "[78] L24-->L32-2: Formula: (= v_t_2 1) InVars {} OutVars{t=v_t_2} AuxVars[] AssignedVars[t]" [2025-02-17 22:48:35,188 INFO L754 eck$LassoCheckResult]: Loop: "[81] L32-2-->L32: Formula: (<= v_x1_4 v_n_2) InVars {x1=v_x1_4, n=v_n_2} OutVars{x1=v_x1_4, n=v_n_2} AuxVars[] AssignedVars[]" "[83] L32-->L34: Formula: (<= 1 v_b_4) InVars {b=v_b_4} OutVars{b=v_b_4} AuxVars[] AssignedVars[]" "[85] L34-->L32-2: Formula: (= v_x1_5 (+ v_x1_6 v_t_4)) InVars {x1=v_x1_6, t=v_t_4} OutVars{x1=v_x1_5, t=v_t_4} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:35,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 128325, now seen corresponding path program 1 times [2025-02-17 22:48:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:35,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346401763] [2025-02-17 22:48:35,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:35,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:35,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:35,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:35,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:35,251 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:35,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:35,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:35,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:35,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:35,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash 110290, now seen corresponding path program 1 times [2025-02-17 22:48:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:35,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797484728] [2025-02-17 22:48:35,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:35,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:35,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:35,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:35,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:35,279 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:35,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:35,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:35,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:35,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:35,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash -471956722, now seen corresponding path program 1 times [2025-02-17 22:48:35,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:35,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639559511] [2025-02-17 22:48:35,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:35,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:35,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:35,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:35,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:35,297 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:35,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:35,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:35,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:35,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:35,367 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:35,367 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:35,368 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:35,368 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:35,368 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:35,368 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:35,368 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:35,368 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:35,368 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration1_Lasso [2025-02-17 22:48:35,368 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:35,368 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:35,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:35,390 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:35,396 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:35,439 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:35,439 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:35,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:35,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:35,443 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 22:48:35,446 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 22:48:35,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:35,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:35,469 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 22:48:35,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:35,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:35,471 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 22:48:35,473 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 22:48:35,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:35,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:35,627 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:35,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:48:35,634 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:35,634 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:35,634 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:35,634 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:35,634 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:35,634 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:35,634 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:35,634 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:35,634 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration1_Lasso [2025-02-17 22:48:35,634 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:35,634 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:35,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:35,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:35,650 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:35,686 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:35,689 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:35,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:35,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:35,712 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 22:48:35,713 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 22:48:35,714 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 22:48:35,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:35,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:35,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:35,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:35,735 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:35,735 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:35,743 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:35,749 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:35,749 INFO L444 ModelExtractionUtils]: 6 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:35,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:35,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:35,753 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 22:48:35,754 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 22:48:35,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:35,766 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:35,767 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:35,767 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, n) = -2*x1 + 2*n + 1 Supporting invariants [1*t - 1 >= 0] [2025-02-17 22:48:35,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:48:35,782 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:35,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:35,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:35,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:35,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:35,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-17 22:48:35,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:35,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:35,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:35,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:35,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:35,831 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:35,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:35,871 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 22:48:35,880 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 22:48:35,918 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 22:48:35,920 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 85 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 84 states have internal predecessors, (160), 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 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 22:48:36,046 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 85 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 84 states have internal predecessors, (160), 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 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 295 states and 579 transitions. Complement of second has 7 states. [2025-02-17 22:48:36,047 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 22:48:36,050 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 22:48:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-02-17 22:48:36,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:48:36,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:36,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:48:36,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:36,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:48:36,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:36,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 295 states and 579 transitions. [2025-02-17 22:48:36,062 INFO L131 ngComponentsAnalysis]: Automaton has 24 accepting balls. 120 [2025-02-17 22:48:36,069 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 295 states to 231 states and 464 transitions. [2025-02-17 22:48:36,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 181 [2025-02-17 22:48:36,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 200 [2025-02-17 22:48:36,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 231 states and 464 transitions. [2025-02-17 22:48:36,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:36,071 INFO L218 hiAutomatonCegarLoop]: Abstraction has 231 states and 464 transitions. [2025-02-17 22:48:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states and 464 transitions. [2025-02-17 22:48:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 134. [2025-02-17 22:48:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 2.1044776119402986) internal successors, (282), 133 states have internal predecessors, (282), 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 22:48:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 282 transitions. [2025-02-17 22:48:36,104 INFO L240 hiAutomatonCegarLoop]: Abstraction has 134 states and 282 transitions. [2025-02-17 22:48:36,104 INFO L432 stractBuchiCegarLoop]: Abstraction has 134 states and 282 transitions. [2025-02-17 22:48:36,104 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:36,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 282 transitions. [2025-02-17 22:48:36,105 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 60 [2025-02-17 22:48:36,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:36,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:36,106 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:36,106 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:36,106 INFO L752 eck$LassoCheckResult]: Stem: "[100] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[77] $Ultimate##0-->L28: Formula: (< v_b_3 1) InVars {b=v_b_3} OutVars{b=v_b_3} AuxVars[] AssignedVars[]" "[79] L28-->L32-2: Formula: (= (+ v_t_3 1) 0) InVars {} OutVars{t=v_t_3} AuxVars[] AssignedVars[t]" [2025-02-17 22:48:36,106 INFO L754 eck$LassoCheckResult]: Loop: "[81] L32-2-->L32: Formula: (<= v_x1_4 v_n_2) InVars {x1=v_x1_4, n=v_n_2} OutVars{x1=v_x1_4, n=v_n_2} AuxVars[] AssignedVars[]" "[84] L32-->L38: Formula: (< v_b_1 1) InVars {b=v_b_1} OutVars{b=v_b_1} AuxVars[] AssignedVars[]" "[86] L38-->L32-2: Formula: (= v_x1_2 (+ v_x1_1 v_t_1)) InVars {x1=v_x1_2, t=v_t_1} OutVars{x1=v_x1_1, t=v_t_1} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:36,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 128357, now seen corresponding path program 1 times [2025-02-17 22:48:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64408271] [2025-02-17 22:48:36,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,114 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash 110322, now seen corresponding path program 1 times [2025-02-17 22:48:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730167184] [2025-02-17 22:48:36,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,124 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash -471003378, now seen corresponding path program 1 times [2025-02-17 22:48:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061859993] [2025-02-17 22:48:36,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:36,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:36,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,137 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:36,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:36,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,179 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:36,179 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:36,179 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:36,179 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:36,179 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:36,179 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,179 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:36,179 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:36,179 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration2_Lasso [2025-02-17 22:48:36,179 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:36,179 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:36,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,183 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,223 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:36,223 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:36,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,225 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 22:48:36,227 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 22:48:36,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:36,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:36,238 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:36,238 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork0_thidvar0=0} Honda state: {thread1Thread1of1ForFork0_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:36,244 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 22:48:36,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,246 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 22:48:36,247 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 22:48:36,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:36,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:36,265 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 22:48:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,268 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 22:48:36,272 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 22:48:36,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:36,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:36,397 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:36,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:36,403 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:36,403 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:36,403 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:36,403 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:36,403 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:36,403 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,403 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:36,403 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:36,403 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration2_Lasso [2025-02-17 22:48:36,403 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:36,403 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:36,404 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,406 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,409 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,447 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:36,447 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:36,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,449 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 22:48:36,450 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 22:48:36,451 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 22:48:36,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:36,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:36,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:36,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:36,465 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:36,465 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:36,469 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:36,474 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 22:48:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,477 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 22:48:36,478 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 22:48:36,479 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 22:48:36,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:36,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:36,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:36,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:36,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:36,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:36,494 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:36,502 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 22:48:36,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,532 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 22:48:36,533 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 22:48:36,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:36,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:36,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:36,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:36,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:36,547 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:36,547 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:36,552 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:36,555 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:36,555 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:36,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:36,558 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 22:48:36,559 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 22:48:36,560 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:36,571 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:36,571 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:36,571 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(n, x1, t) = 2*n - 2*x1 - 1*t Supporting invariants [-1*t - 1 >= 0] [2025-02-17 22:48:36,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:36,581 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:36,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:36,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-17 22:48:36,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:36,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:36,618 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:36,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:36,646 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 22:48:36,647 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 22:48:36,647 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 134 states and 282 transitions. cyclomatic complexity: 166 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 22:48:36,760 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 134 states and 282 transitions. cyclomatic complexity: 166. 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 329 states and 684 transitions. Complement of second has 8 states. [2025-02-17 22:48:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2025-02-17 22:48:36,761 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 22:48:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2025-02-17 22:48:36,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:48:36,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:36,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:48:36,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:36,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:48:36,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:36,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 329 states and 684 transitions. [2025-02-17 22:48:36,764 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 124 [2025-02-17 22:48:36,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 329 states to 293 states and 605 transitions. [2025-02-17 22:48:36,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 199 [2025-02-17 22:48:36,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2025-02-17 22:48:36,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 293 states and 605 transitions. [2025-02-17 22:48:36,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:36,771 INFO L218 hiAutomatonCegarLoop]: Abstraction has 293 states and 605 transitions. [2025-02-17 22:48:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states and 605 transitions. [2025-02-17 22:48:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 189. [2025-02-17 22:48:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 2.1534391534391535) internal successors, (407), 188 states have internal predecessors, (407), 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 22:48:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 407 transitions. [2025-02-17 22:48:36,786 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 407 transitions. [2025-02-17 22:48:36,786 INFO L432 stractBuchiCegarLoop]: Abstraction has 189 states and 407 transitions. [2025-02-17 22:48:36,786 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:36,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 407 transitions. [2025-02-17 22:48:36,789 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 60 [2025-02-17 22:48:36,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:36,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:36,789 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:36,789 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:36,789 INFO L752 eck$LassoCheckResult]: Stem: "[100] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[76] $Ultimate##0-->L24: Formula: (<= 1 v_b_2) InVars {b=v_b_2} OutVars{b=v_b_2} AuxVars[] AssignedVars[]" "[103] L13-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[87] $Ultimate##0-->L48: Formula: (<= 1 v_b_7) InVars {b=v_b_7} OutVars{b=v_b_7} AuxVars[] AssignedVars[]" "[89] L48-->L56-2: Formula: (= v_t_7 1) InVars {} OutVars{t=v_t_7} AuxVars[] AssignedVars[t]" [2025-02-17 22:48:36,789 INFO L754 eck$LassoCheckResult]: Loop: "[92] L56-2-->L56: Formula: (<= v_x2_1 v_n_3) InVars {x2=v_x2_1, n=v_n_3} OutVars{x2=v_x2_1, n=v_n_3} AuxVars[] AssignedVars[]" "[95] L56-->L62: Formula: (< v_b_6 1) InVars {b=v_b_6} OutVars{b=v_b_6} AuxVars[] AssignedVars[]" "[97] L62-->L56-2: Formula: (= v_x2_5 (+ v_x2_4 v_t_6)) InVars {t=v_t_6, x2=v_x2_5} OutVars{t=v_t_6, x2=v_x2_4} AuxVars[] AssignedVars[x2]" [2025-02-17 22:48:36,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash 123347136, now seen corresponding path program 1 times [2025-02-17 22:48:36,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522472692] [2025-02-17 22:48:36,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:36,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:36,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,794 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:36,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:36,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,798 INFO L85 PathProgramCache]: Analyzing trace with hash 121245, now seen corresponding path program 1 times [2025-02-17 22:48:36,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656259947] [2025-02-17 22:48:36,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,801 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1857385346, now seen corresponding path program 1 times [2025-02-17 22:48:36,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115254221] [2025-02-17 22:48:36,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:36,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:36,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:36,837 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 22:48:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115254221] [2025-02-17 22:48:36,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115254221] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:36,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:48:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956014771] [2025-02-17 22:48:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:36,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:48:36,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:48:36,863 INFO L87 Difference]: Start difference. First operand 189 states and 407 transitions. cyclomatic complexity: 242 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:48:36,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:36,896 INFO L93 Difference]: Finished difference Result 188 states and 351 transitions. [2025-02-17 22:48:36,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 351 transitions. [2025-02-17 22:48:36,897 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 57 [2025-02-17 22:48:36,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 171 states and 323 transitions. [2025-02-17 22:48:36,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2025-02-17 22:48:36,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2025-02-17 22:48:36,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 323 transitions. [2025-02-17 22:48:36,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:36,902 INFO L218 hiAutomatonCegarLoop]: Abstraction has 171 states and 323 transitions. [2025-02-17 22:48:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 323 transitions. [2025-02-17 22:48:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2025-02-17 22:48:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 155 states have (on average 1.8774193548387097) internal successors, (291), 154 states have internal predecessors, (291), 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 22:48:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 291 transitions. [2025-02-17 22:48:36,909 INFO L240 hiAutomatonCegarLoop]: Abstraction has 155 states and 291 transitions. [2025-02-17 22:48:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:48:36,910 INFO L432 stractBuchiCegarLoop]: Abstraction has 155 states and 291 transitions. [2025-02-17 22:48:36,910 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:36,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155 states and 291 transitions. [2025-02-17 22:48:36,912 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 57 [2025-02-17 22:48:36,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:36,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:36,912 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:36,912 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:36,912 INFO L752 eck$LassoCheckResult]: Stem: "[100] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[76] $Ultimate##0-->L24: Formula: (<= 1 v_b_2) InVars {b=v_b_2} OutVars{b=v_b_2} AuxVars[] AssignedVars[]" "[103] L13-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[87] $Ultimate##0-->L48: Formula: (<= 1 v_b_7) InVars {b=v_b_7} OutVars{b=v_b_7} AuxVars[] AssignedVars[]" "[89] L48-->L56-2: Formula: (= v_t_7 1) InVars {} OutVars{t=v_t_7} AuxVars[] AssignedVars[t]" [2025-02-17 22:48:36,913 INFO L754 eck$LassoCheckResult]: Loop: "[92] L56-2-->L56: Formula: (<= v_x2_1 v_n_3) InVars {x2=v_x2_1, n=v_n_3} OutVars{x2=v_x2_1, n=v_n_3} AuxVars[] AssignedVars[]" "[94] L56-->L58: Formula: (<= 1 v_b_5) InVars {b=v_b_5} OutVars{b=v_b_5} AuxVars[] AssignedVars[]" "[96] L58-->L56-2: Formula: (= v_x2_2 (+ v_x2_3 v_t_5)) InVars {t=v_t_5, x2=v_x2_3} OutVars{t=v_t_5, x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:48:36,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash 123347136, now seen corresponding path program 2 times [2025-02-17 22:48:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358322887] [2025-02-17 22:48:36,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:48:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,915 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:36,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:36,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:48:36,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,917 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:36,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:36,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 121213, now seen corresponding path program 1 times [2025-02-17 22:48:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956214009] [2025-02-17 22:48:36,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,921 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:36,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:36,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1857385378, now seen corresponding path program 1 times [2025-02-17 22:48:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647023691] [2025-02-17 22:48:36,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:36,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:36,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:36,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:36,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,926 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:36,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:36,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:36,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:36,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:36,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:36,965 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:36,965 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:36,965 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:36,965 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:36,965 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:36,965 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:36,965 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:36,965 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:36,965 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration4_Lasso [2025-02-17 22:48:36,965 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:36,965 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:36,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:36,978 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,024 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:37,024 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,026 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 22:48:37,027 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 22:48:37,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,045 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,045 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {b=1} Honda state: {b=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,051 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 22:48:37,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,054 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 22:48:37,055 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 22:48:37,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,067 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,067 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork0_thidvar0=0} Honda state: {thread1Thread1of1ForFork0_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,073 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 22:48:37,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,076 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 22:48:37,077 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 22:48:37,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,091 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,091 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork1_thidvar0=0} Honda state: {thread2Thread1of1ForFork1_thidvar0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:37,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,104 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 22:48:37,105 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 22:48:37,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,117 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,118 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork1_thidvar1=0} Honda state: {thread2Thread1of1ForFork1_thidvar1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,123 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 22:48:37,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,126 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 22:48:37,127 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 22:48:37,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,145 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 22:48:37,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,147 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 22:48:37,148 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 22:48:37,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:37,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,297 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:37,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:37,303 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:37,303 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:37,303 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:37,303 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:37,303 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:37,303 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,303 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:37,303 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:37,303 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration4_Lasso [2025-02-17 22:48:37,303 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:37,303 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:37,304 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,312 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,314 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,370 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:37,370 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:37,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,396 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 22:48:37,397 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 22:48:37,398 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 22:48:37,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:37,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:37,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:37,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:37,408 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:37,408 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:37,411 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:37,416 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 22:48:37,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,418 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 22:48:37,418 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 22:48:37,419 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 22:48:37,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:37,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:37,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:37,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:37,430 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:37,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:37,432 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:37,438 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 22:48:37,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,440 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 22:48:37,441 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 22:48:37,442 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 22:48:37,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:37,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:37,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:37,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:37,454 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:37,454 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:37,456 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:37,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:48:37,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,464 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 22:48:37,465 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 22:48:37,466 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 22:48:37,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:37,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:37,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:37,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:37,488 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:37,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:37,493 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:37,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:48:37,500 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 22:48:37,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,502 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 22:48:37,504 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 22:48:37,507 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 22:48:37,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:37,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:37,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:37,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:37,523 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:37,523 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:37,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:37,536 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-02-17 22:48:37,537 INFO L444 ModelExtractionUtils]: 6 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:37,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,538 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 22:48:37,539 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 22:48:37,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:37,558 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:37,558 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:37,558 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, n) = -2*x2 + 2*n + 1 Supporting invariants [1*t - 1 >= 0] [2025-02-17 22:48:37,566 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 22:48:37,570 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:37,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:37,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:37,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:37,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:37,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-17 22:48:37,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:37,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:37,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:37,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:37,607 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:37,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:37,634 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 22:48:37,635 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 22:48:37,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 155 states and 291 transitions. cyclomatic complexity: 161 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:48:37,693 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 155 states and 291 transitions. cyclomatic complexity: 161. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 315 states and 623 transitions. Complement of second has 7 states. [2025-02-17 22:48:37,693 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 22:48:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:48:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-02-17 22:48:37,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:48:37,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:37,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:48:37,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:37,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:48:37,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:37,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 623 transitions. [2025-02-17 22:48:37,696 INFO L131 ngComponentsAnalysis]: Automaton has 26 accepting balls. 90 [2025-02-17 22:48:37,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 177 states and 328 transitions. [2025-02-17 22:48:37,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2025-02-17 22:48:37,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 138 [2025-02-17 22:48:37,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 328 transitions. [2025-02-17 22:48:37,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:37,698 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 328 transitions. [2025-02-17 22:48:37,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 328 transitions. [2025-02-17 22:48:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 139. [2025-02-17 22:48:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 139 states have (on average 1.9064748201438848) internal successors, (265), 138 states have internal predecessors, (265), 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 22:48:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 265 transitions. [2025-02-17 22:48:37,705 INFO L240 hiAutomatonCegarLoop]: Abstraction has 139 states and 265 transitions. [2025-02-17 22:48:37,705 INFO L432 stractBuchiCegarLoop]: Abstraction has 139 states and 265 transitions. [2025-02-17 22:48:37,705 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:48:37,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 265 transitions. [2025-02-17 22:48:37,710 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 60 [2025-02-17 22:48:37,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:37,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:37,710 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:37,710 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:37,710 INFO L752 eck$LassoCheckResult]: Stem: "[100] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[77] $Ultimate##0-->L28: Formula: (< v_b_3 1) InVars {b=v_b_3} OutVars{b=v_b_3} AuxVars[] AssignedVars[]" "[103] L13-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[88] $Ultimate##0-->L52: Formula: (< v_b_8 1) InVars {b=v_b_8} OutVars{b=v_b_8} AuxVars[] AssignedVars[]" "[90] L52-->L56-2: Formula: (= (+ v_t_8 1) 0) InVars {} OutVars{t=v_t_8} AuxVars[] AssignedVars[t]" [2025-02-17 22:48:37,710 INFO L754 eck$LassoCheckResult]: Loop: "[92] L56-2-->L56: Formula: (<= v_x2_1 v_n_3) InVars {x2=v_x2_1, n=v_n_3} OutVars{x2=v_x2_1, n=v_n_3} AuxVars[] AssignedVars[]" "[95] L56-->L62: Formula: (< v_b_6 1) InVars {b=v_b_6} OutVars{b=v_b_6} AuxVars[] AssignedVars[]" "[97] L62-->L56-2: Formula: (= v_x2_5 (+ v_x2_4 v_t_6)) InVars {t=v_t_6, x2=v_x2_5} OutVars{t=v_t_6, x2=v_x2_4} AuxVars[] AssignedVars[x2]" [2025-02-17 22:48:37,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:37,711 INFO L85 PathProgramCache]: Analyzing trace with hash 123376959, now seen corresponding path program 1 times [2025-02-17 22:48:37,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:37,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888796165] [2025-02-17 22:48:37,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:37,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:37,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:37,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:37,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:37,715 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:37,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:37,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:37,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:37,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:37,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 121245, now seen corresponding path program 2 times [2025-02-17 22:48:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215953270] [2025-02-17 22:48:37,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:48:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:37,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:37,725 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:37,725 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:48:37,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:37,725 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:37,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:37,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:37,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:37,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:37,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash -968928353, now seen corresponding path program 1 times [2025-02-17 22:48:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388357071] [2025-02-17 22:48:37,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:37,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:37,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:37,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:37,734 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:37,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:37,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:37,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:37,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:37,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:37,776 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:37,776 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:37,776 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:37,776 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:37,777 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:37,777 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,777 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:37,777 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:37,777 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration5_Lasso [2025-02-17 22:48:37,777 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:37,777 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:37,777 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,780 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,790 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:37,832 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:37,833 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:37,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,836 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 22:48:37,836 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 22:48:37,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,849 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,849 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork0_thidvar0=0} Honda state: {thread1Thread1of1ForFork0_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,855 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 22:48:37,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,857 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 22:48:37,857 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 22:48:37,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,874 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,875 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {b=0} Honda state: {b=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:48:37,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,882 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:37,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-17 22:48:37,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,894 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:37,894 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork1_thidvar1=0} Honda state: {thread2Thread1of1ForFork1_thidvar1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:37,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-02-17 22:48:37,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,901 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:37,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-17 22:48:37,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:37,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:37,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:37,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:37,921 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:37,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-17 22:48:37,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:37,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:38,043 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:38,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-02-17 22:48:38,049 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:38,049 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:38,049 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:38,049 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:38,049 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:38,049 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:38,049 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:38,049 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:38,049 INFO L132 ssoRankerPreferences]: Filename of dumped script: adfg_2_x_indep.c.bpl_petrified1_Iteration5_Lasso [2025-02-17 22:48:38,049 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:38,049 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:38,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:38,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:38,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:38,060 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:38,064 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:38,111 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:38,111 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:38,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:38,113 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:38,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-02-17 22:48:38,114 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 22:48:38,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:38,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:38,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:38,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:38,127 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:38,128 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:38,130 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:38,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-02-17 22:48:38,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:38,144 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:38,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-02-17 22:48:38,147 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 22:48:38,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:38,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:38,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:38,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:38,159 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:38,159 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:38,164 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:38,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:38,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:38,171 INFO L229 MonitoredProcess]: Starting monitored process 32 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 22:48:38,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-02-17 22:48:38,174 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 22:48:38,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:38,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:38,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:38,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:38,185 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:38,185 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:38,187 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:38,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-02-17 22:48:38,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:38,195 INFO L229 MonitoredProcess]: Starting monitored process 33 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 22:48:38,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-02-17 22:48:38,198 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 22:48:38,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:38,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:38,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:38,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:38,209 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-17 22:48:38,209 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-17 22:48:38,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:38,220 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-02-17 22:48:38,220 INFO L444 ModelExtractionUtils]: 6 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:38,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:38,222 INFO L229 MonitoredProcess]: Starting monitored process 34 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 22:48:38,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-02-17 22:48:38,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:38,236 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-02-17 22:48:38,236 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:38,236 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(n, x2) = 2*n - 2*x2 + 1 Supporting invariants [-1*t - 1 >= 0] [2025-02-17 22:48:38,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2025-02-17 22:48:38,248 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-02-17 22:48:38,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:38,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:38,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:38,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:38,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:38,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-17 22:48:38,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:38,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:38,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:38,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:38,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:38,282 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:48:38,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:38,305 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 22:48:38,306 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 22:48:38,306 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 265 transitions. cyclomatic complexity: 151 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:48:38,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 265 transitions. cyclomatic complexity: 151. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 319 states and 642 transitions. Complement of second has 7 states. [2025-02-17 22:48:38,364 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 22:48:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 22:48:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2025-02-17 22:48:38,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 55 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:48:38,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:38,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 55 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:48:38,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:38,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 55 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:48:38,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:38,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 642 transitions. [2025-02-17 22:48:38,366 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 87 [2025-02-17 22:48:38,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 270 states and 522 transitions. [2025-02-17 22:48:38,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 153 [2025-02-17 22:48:38,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 180 [2025-02-17 22:48:38,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 522 transitions. [2025-02-17 22:48:38,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:38,371 INFO L218 hiAutomatonCegarLoop]: Abstraction has 270 states and 522 transitions. [2025-02-17 22:48:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 522 transitions. [2025-02-17 22:48:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 181. [2025-02-17 22:48:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 181 states have (on average 1.9668508287292819) internal successors, (356), 180 states have internal predecessors, (356), 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 22:48:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 356 transitions. [2025-02-17 22:48:38,377 INFO L240 hiAutomatonCegarLoop]: Abstraction has 181 states and 356 transitions. [2025-02-17 22:48:38,378 INFO L432 stractBuchiCegarLoop]: Abstraction has 181 states and 356 transitions. [2025-02-17 22:48:38,378 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:48:38,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 181 states and 356 transitions. [2025-02-17 22:48:38,378 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 48 [2025-02-17 22:48:38,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:38,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:38,379 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:48:38,379 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:38,379 INFO L752 eck$LassoCheckResult]: Stem: "[100] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[77] $Ultimate##0-->L28: Formula: (< v_b_3 1) InVars {b=v_b_3} OutVars{b=v_b_3} AuxVars[] AssignedVars[]" "[103] L13-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[88] $Ultimate##0-->L52: Formula: (< v_b_8 1) InVars {b=v_b_8} OutVars{b=v_b_8} AuxVars[] AssignedVars[]" "[79] L28-->L32-2: Formula: (= (+ v_t_3 1) 0) InVars {} OutVars{t=v_t_3} AuxVars[] AssignedVars[t]" "[81] L32-2-->L32: Formula: (<= v_x1_4 v_n_2) InVars {x1=v_x1_4, n=v_n_2} OutVars{x1=v_x1_4, n=v_n_2} AuxVars[] AssignedVars[]" [2025-02-17 22:48:38,379 INFO L754 eck$LassoCheckResult]: Loop: "[83] L32-->L34: Formula: (<= 1 v_b_4) InVars {b=v_b_4} OutVars{b=v_b_4} AuxVars[] AssignedVars[]" "[85] L34-->L32-2: Formula: (= v_x1_5 (+ v_x1_6 v_t_4)) InVars {x1=v_x1_6, t=v_t_4} OutVars{x1=v_x1_5, t=v_t_4} AuxVars[] AssignedVars[x1]" "[81] L32-2-->L32: Formula: (<= v_x1_4 v_n_2) InVars {x1=v_x1_4, n=v_n_2} OutVars{x1=v_x1_4, n=v_n_2} AuxVars[] AssignedVars[]" [2025-02-17 22:48:38,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash -470281827, now seen corresponding path program 1 times [2025-02-17 22:48:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:38,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687167590] [2025-02-17 22:48:38,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:38,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:38,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:38,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:38,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:38,383 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:38,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:38,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:38,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:38,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:38,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:38,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 112270, now seen corresponding path program 2 times [2025-02-17 22:48:38,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:38,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638428835] [2025-02-17 22:48:38,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:48:38,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:38,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:38,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:38,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:48:38,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:38,391 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:38,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:38,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:38,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:38,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:38,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:38,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash 17493874, now seen corresponding path program 1 times [2025-02-17 22:48:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601599074] [2025-02-17 22:48:38,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:38,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:38,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-17 22:48:38,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-17 22:48:38,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:38,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601599074] [2025-02-17 22:48:38,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601599074] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:38,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:38,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:48:38,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666383166] [2025-02-17 22:48:38,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:38,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:38,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:48:38,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:48:38,425 INFO L87 Difference]: Start difference. First operand 181 states and 356 transitions. cyclomatic complexity: 205 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 22:48:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:38,433 INFO L93 Difference]: Finished difference Result 107 states and 203 transitions. [2025-02-17 22:48:38,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 203 transitions. [2025-02-17 22:48:38,433 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:38,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 0 states and 0 transitions. [2025-02-17 22:48:38,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:38,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:38,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:38,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:38,434 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:38,434 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:48:38,436 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:38,436 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-02-17 22:48:38,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:38,436 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:38,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:38,441 INFO L201 PluginConnector]: Adding new model adfg_2_x_indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:38 BoogieIcfgContainer [2025-02-17 22:48:38,441 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:38,441 INFO L158 Benchmark]: Toolchain (without parser) took 3923.18ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 85.8MB in the beginning and 45.8MB in the end (delta: 40.0MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2025-02-17 22:48:38,441 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:38,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.35ms. Allocated memory is still 159.4MB. Free memory was 85.8MB in the beginning and 84.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:38,441 INFO L158 Benchmark]: Boogie Preprocessor took 11.45ms. Allocated memory is still 159.4MB. Free memory was 84.5MB in the beginning and 83.9MB in the end (delta: 670.1kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:38,442 INFO L158 Benchmark]: RCFGBuilder took 153.35ms. Allocated memory is still 159.4MB. Free memory was 83.9MB in the beginning and 75.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:48:38,442 INFO L158 Benchmark]: BuchiAutomizer took 3731.81ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.9MB in the beginning and 45.8MB in the end (delta: 29.1MB). Peak memory consumption was 25.7MB. Max. memory is 8.0GB. [2025-02-17 22:48:38,443 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 0.18ms. Allocated memory is still 159.4MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.35ms. Allocated memory is still 159.4MB. Free memory was 85.8MB in the beginning and 84.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 11.45ms. Allocated memory is still 159.4MB. Free memory was 84.5MB in the beginning and 83.9MB in the end (delta: 670.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 153.35ms. Allocated memory is still 159.4MB. Free memory was 83.9MB in the beginning and 75.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3731.81ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.9MB in the beginning and 45.8MB in the end (delta: 29.1MB). Peak memory consumption was 25.7MB. 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 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * n + -2 * x1 + 1 and consists of 4 locations. One deterministic module has affine ranking function 2 * n + -1 * t + -2 * x1 and consists of 5 locations. One deterministic module has affine ranking function 2 * n + -2 * x2 + 1 and consists of 4 locations. One deterministic module has affine ranking function 2 * n + -2 * x2 + 1 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 344 StatesRemovedByMinimization, 5 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 [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 172 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq184 hnf95 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 76ms VariablesStem: 1 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.3s InitialAbstraction: Time to compute Ample Reduction [ms]: 361, Trivial Ample Sets caused by loops: 52, Number of non-trivial ample sets: 64, Number of pruned transitions: 35, Number of transitions in reduction automaton: 160, Number of states in reduction automaton: 85, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:38,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:38,652 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 22:48:38,852 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...