/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/4_plus_thr/pp4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:52:08,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:52:09,049 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:52:09,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:52:09,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:52:09,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:52:09,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:52:09,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:52:09,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:52:09,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:52:09,078 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:52:09,078 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:52:09,078 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:52:09,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:52:09,079 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:52:09,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:52:09,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:52:09,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:52:09,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:52:09,080 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:52:09,080 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 22:52:09,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:52:09,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:52:09,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:52:09,315 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:52:09,316 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:52:09,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl [2025-02-17 22:52:09,318 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pp4.c.bpl' [2025-02-17 22:52:09,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:52:09,331 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:52:09,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:52:09,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:52:09,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:52:09,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,346 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:52:09,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:52:09,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:52:09,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:52:09,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:52:09,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,355 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:52:09,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:52:09,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:52:09,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:52:09,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/1) ... [2025-02-17 22:52:09,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:09,390 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 22:52:09,392 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 22:52:09,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:52:09,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:52:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:52:09,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:52:09,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:52:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:52:09,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:52:09,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:52:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:52:09,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:52:09,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:52:09,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:52:09,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:52:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:52:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:52:09,409 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 22:52:09,447 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:52:09,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:52:09,524 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:52:09,524 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:52:09,538 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:52:09,539 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:52:09,539 INFO L201 PluginConnector]: Adding new model pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:52:09 BoogieIcfgContainer [2025-02-17 22:52:09,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:52:09,540 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:52:09,540 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:52:09,545 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:52:09,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:52:09,545 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:09" (1/2) ... [2025-02-17 22:52:09,546 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77277432 and model type pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:52:09, skipping insertion in model container [2025-02-17 22:52:09,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:52:09,546 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:52:09" (2/2) ... [2025-02-17 22:52:09,547 INFO L363 chiAutomizerObserver]: Analyzing ICFG pp4.c.bpl [2025-02-17 22:52:09,616 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:52:09,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:52:09,696 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-17 22:52:09,699 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:52:09,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:52:09,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:52:09,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-02-17 22:52:09,712 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:52:10,472 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:52:10,473 INFO L101 AmpleReduction]: Number of pruned transitions: 2315, Number of non-trivial ample sets: 2907 [2025-02-17 22:52:10,473 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 1881 [2025-02-17 22:52:10,482 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:52:10,482 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:52:10,482 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:52:10,482 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:52:10,482 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:52:10,482 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:52:10,483 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:52:10,483 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:52:10,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1816 states, 1815 states have (on average 2.6672176308539943) internal successors, (4841), 1815 states have internal predecessors, (4841), 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 22:52:10,557 INFO L131 ngComponentsAnalysis]: Automaton has 190 accepting balls. 1326 [2025-02-17 22:52:10,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:10,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:10,563 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:52:10,563 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:10,563 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:52:10,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1816 states, 1815 states have (on average 2.6672176308539943) internal successors, (4841), 1815 states have internal predecessors, (4841), 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 22:52:10,599 INFO L131 ngComponentsAnalysis]: Automaton has 190 accepting balls. 1326 [2025-02-17 22:52:10,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:10,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:10,599 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:52:10,599 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:10,603 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:52:10,604 INFO L754 eck$LassoCheckResult]: Loop: "[81] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[83] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[85] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:10,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash 3330, now seen corresponding path program 1 times [2025-02-17 22:52:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:10,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766684483] [2025-02-17 22:52:10,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:10,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:10,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:52:10,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:52:10,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:10,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:10,667 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:10,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:52:10,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:52:10,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:10,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:10,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:10,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash 110290, now seen corresponding path program 1 times [2025-02-17 22:52:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:10,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748674505] [2025-02-17 22:52:10,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:10,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:10,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:10,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:10,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:10,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:10,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:10,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:10,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:10,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:10,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:10,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 99284529, now seen corresponding path program 1 times [2025-02-17 22:52:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411212627] [2025-02-17 22:52:10,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:10,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:10,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:10,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:10,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:10,719 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:10,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:10,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:10,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:10,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:10,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:10,771 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:10,772 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:10,772 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:10,772 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:10,772 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:10,772 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:10,772 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:10,772 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:10,772 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:52:10,772 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:10,772 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:10,810 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:10,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:10,910 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:10,910 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:10,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:10,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:10,914 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 22:52:10,916 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 22:52:10,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:10,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:10,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:52:10,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:10,939 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 22:52:10,940 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 22:52:10,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:10,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:10,991 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:52:10,991 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:52:10,997 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 22:52:10,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:10,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:10,999 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 22:52:11,001 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 22:52:11,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:11,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:11,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:11,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,025 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 22:52:11,026 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 22:52:11,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:11,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:11,095 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:11,099 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 22:52:11,100 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:11,100 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:11,100 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:11,100 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:11,100 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:11,100 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,100 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:11,100 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:11,100 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:52:11,100 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:11,100 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:11,101 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:11,105 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:11,140 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:11,143 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:11,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,146 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 22:52:11,148 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 22:52:11,149 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 22:52:11,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:11,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:11,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:11,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:11,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:11,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:11,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:11,167 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:52:11,174 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 22:52:11,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,176 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 22:52:11,177 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 22:52:11,178 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 22:52:11,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:11,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:11,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:11,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:11,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:11,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:11,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:11,191 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:11,193 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:11,194 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:52:11,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,197 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 22:52:11,197 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 22:52:11,198 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:11,198 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:11,198 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:11,198 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-02-17 22:52:11,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:52:11,210 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:11,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:11,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:52:11,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:52:11,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:11,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:11,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:11,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:11,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:11,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:11,246 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:11,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:11,282 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 22:52:11,297 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:52:11,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 1816 states, 1815 states have (on average 2.6672176308539943) internal successors, (4841), 1815 states have internal predecessors, (4841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:11,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 1816 states, 1815 states have (on average 2.6672176308539943) internal successors, (4841), 1815 states have internal predecessors, (4841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4353 states and 12758 transitions. Complement of second has 6 states. [2025-02-17 22:52:11,490 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 22:52:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-17 22:52:11,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:52:11,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:11,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:52:11,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:11,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:52:11,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:11,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4353 states and 12758 transitions. [2025-02-17 22:52:11,572 INFO L131 ngComponentsAnalysis]: Automaton has 151 accepting balls. 837 [2025-02-17 22:52:11,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4353 states to 2867 states and 9088 transitions. [2025-02-17 22:52:11,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1500 [2025-02-17 22:52:11,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1952 [2025-02-17 22:52:11,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2867 states and 9088 transitions. [2025-02-17 22:52:11,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:11,640 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2867 states and 9088 transitions. [2025-02-17 22:52:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states and 9088 transitions. [2025-02-17 22:52:11,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:52:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2426. [2025-02-17 22:52:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2426 states have (on average 3.123248145094806) internal successors, (7577), 2425 states have internal predecessors, (7577), 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 22:52:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 7577 transitions. [2025-02-17 22:52:11,795 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2426 states and 7577 transitions. [2025-02-17 22:52:11,795 INFO L432 stractBuchiCegarLoop]: Abstraction has 2426 states and 7577 transitions. [2025-02-17 22:52:11,795 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:52:11,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2426 states and 7577 transitions. [2025-02-17 22:52:11,811 INFO L131 ngComponentsAnalysis]: Automaton has 151 accepting balls. 837 [2025-02-17 22:52:11,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:11,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:11,811 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:52:11,811 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:11,812 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[80] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[82] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[84] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:52:11,812 INFO L754 eck$LassoCheckResult]: Loop: "[87] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[89] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[91] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:11,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1217177571, now seen corresponding path program 1 times [2025-02-17 22:52:11,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:11,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551312934] [2025-02-17 22:52:11,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:11,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:52:11,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:52:11,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:11,822 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:11,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:52:11,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:52:11,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:11,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:11,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash 116248, now seen corresponding path program 1 times [2025-02-17 22:52:11,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:11,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242076827] [2025-02-17 22:52:11,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:11,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:11,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:11,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:11,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:11,835 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:11,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:11,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:11,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:11,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:11,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1471948924, now seen corresponding path program 1 times [2025-02-17 22:52:11,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:11,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843936745] [2025-02-17 22:52:11,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:11,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-17 22:52:11,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-17 22:52:11,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:11,852 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:11,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-17 22:52:11,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-17 22:52:11,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:11,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:11,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:11,873 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:11,874 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:11,874 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:11,874 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:11,874 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:11,874 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,874 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:11,874 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:11,874 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:52:11,874 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:11,874 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:11,874 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:11,877 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:11,900 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:11,900 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:11,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,902 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 22:52:11,904 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 22:52:11,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:11,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:11,921 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 22:52:11,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,924 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 22:52:11,924 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 22:52:11,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:11,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:11,959 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:52:11,959 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:52:11,965 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 22:52:11,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,967 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 22:52:11,967 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 22:52:11,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:11,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:11,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:52:11,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:11,988 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 22:52:11,989 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 22:52:11,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:11,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:12,056 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:12,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:12,061 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:12,061 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:12,061 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:12,061 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:12,061 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:12,061 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,061 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:12,061 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:12,062 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:52:12,062 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:12,062 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:12,062 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:12,065 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:12,087 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:12,087 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,089 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 22:52:12,091 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 22:52:12,092 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 22:52:12,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:12,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:12,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:12,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:12,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:12,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:12,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:12,105 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:52:12,110 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 22:52:12,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,113 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 22:52:12,114 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 22:52:12,115 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 22:52:12,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:12,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:12,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:12,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:12,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:12,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:12,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:12,128 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:12,131 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:12,131 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:52:12,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,133 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 22:52:12,135 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 22:52:12,136 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:12,136 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:12,136 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:12,136 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-02-17 22:52:12,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:52:12,143 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:12,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:12,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:52:12,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:52:12,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:12,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:12,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:12,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:12,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:12,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:12,182 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:12,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:12,209 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 22:52:12,209 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:52:12,209 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2426 states and 7577 transitions. cyclomatic complexity: 5360 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 22:52:12,304 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 22:52:12,349 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2426 states and 7577 transitions. cyclomatic complexity: 5360. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 5995 states and 19559 transitions. Complement of second has 6 states. [2025-02-17 22:52:12,349 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 22:52:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 22:52:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-17 22:52:12,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:52:12,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:12,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 9 letters. Loop has 3 letters. [2025-02-17 22:52:12,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:12,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 6 letters. [2025-02-17 22:52:12,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:12,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5995 states and 19559 transitions. [2025-02-17 22:52:12,409 INFO L131 ngComponentsAnalysis]: Automaton has 142 accepting balls. 592 [2025-02-17 22:52:12,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5995 states to 3960 states and 13455 transitions. [2025-02-17 22:52:12,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1519 [2025-02-17 22:52:12,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1852 [2025-02-17 22:52:12,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3960 states and 13455 transitions. [2025-02-17 22:52:12,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:12,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3960 states and 13455 transitions. [2025-02-17 22:52:12,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states and 13455 transitions. [2025-02-17 22:52:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 3627. [2025-02-17 22:52:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3627 states have (on average 3.402812241521919) internal successors, (12342), 3626 states have internal predecessors, (12342), 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 22:52:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 12342 transitions. [2025-02-17 22:52:12,610 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3627 states and 12342 transitions. [2025-02-17 22:52:12,611 INFO L432 stractBuchiCegarLoop]: Abstraction has 3627 states and 12342 transitions. [2025-02-17 22:52:12,611 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:52:12,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3627 states and 12342 transitions. [2025-02-17 22:52:12,634 INFO L131 ngComponentsAnalysis]: Automaton has 142 accepting balls. 592 [2025-02-17 22:52:12,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:12,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:12,635 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:52:12,635 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:12,637 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[80] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[82] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[84] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[109] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[112] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:52:12,638 INFO L754 eck$LassoCheckResult]: Loop: "[93] L49-->L51: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[95] L51-->L52: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[97] L52-->L49: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:12,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash 922201075, now seen corresponding path program 1 times [2025-02-17 22:52:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890453302] [2025-02-17 22:52:12,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:12,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:12,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:52:12,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:52:12,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:12,647 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:12,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:52:12,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:52:12,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:12,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:12,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash 122206, now seen corresponding path program 1 times [2025-02-17 22:52:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:12,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869437524] [2025-02-17 22:52:12,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:12,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:12,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:12,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:12,661 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:12,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:12,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:12,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:12,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:12,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1613474772, now seen corresponding path program 1 times [2025-02-17 22:52:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276844804] [2025-02-17 22:52:12,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:12,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:52:12,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:52:12,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:12,673 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:12,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:52:12,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:52:12,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:12,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:12,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:12,715 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:12,715 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:12,715 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:12,715 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:12,715 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:12,715 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,715 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:12,715 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:12,715 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:52:12,715 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:12,715 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:12,716 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:12,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:12,770 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:12,770 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:12,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,772 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 22:52:12,774 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 22:52:12,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:12,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:12,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,809 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 22:52:12,810 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 22:52:12,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:12,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:12,848 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:52:12,848 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:52:12,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:12,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,857 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 22:52:12,858 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 22:52:12,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:12,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:12,879 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 22:52:12,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,882 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 22:52:12,884 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 22:52:12,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:12,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:12,955 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:12,960 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 22:52:12,960 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:12,960 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:12,960 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:12,960 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:12,960 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:12,960 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,960 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:12,960 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:12,961 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:52:12,961 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:12,961 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:12,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:12,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:12,994 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:12,995 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:12,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:12,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:12,998 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 22:52:12,999 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 22:52:13,000 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 22:52:13,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:13,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:13,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:13,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:13,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:13,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:13,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:13,014 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:52:13,020 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 22:52:13,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:13,023 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 22:52:13,025 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 22:52:13,026 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 22:52:13,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:13,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:13,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:13,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:13,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:13,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:13,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:13,042 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:13,046 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:13,046 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:52:13,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:13,048 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 22:52:13,050 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 22:52:13,052 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:13,052 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:13,052 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:13,052 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-02-17 22:52:13,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:13,059 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:13,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:13,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:52:13,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:52:13,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:13,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:13,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:13,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:13,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:13,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:13,089 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:13,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:13,115 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 22:52:13,115 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:52:13,115 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3627 states and 12342 transitions. cyclomatic complexity: 8997 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:52:13,271 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3627 states and 12342 transitions. cyclomatic complexity: 8997. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 9915 states and 35021 transitions. Complement of second has 6 states. [2025-02-17 22:52:13,272 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 22:52:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:52:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-02-17 22:52:13,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:52:13,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:13,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 10 letters. Loop has 3 letters. [2025-02-17 22:52:13,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:13,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 7 letters. Loop has 6 letters. [2025-02-17 22:52:13,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:13,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9915 states and 35021 transitions. [2025-02-17 22:52:13,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:13,430 INFO L131 ngComponentsAnalysis]: Automaton has 118 accepting balls. 354 [2025-02-17 22:52:13,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9915 states to 5339 states and 19540 transitions. [2025-02-17 22:52:13,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1490 [2025-02-17 22:52:13,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1769 [2025-02-17 22:52:13,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5339 states and 19540 transitions. [2025-02-17 22:52:13,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:13,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5339 states and 19540 transitions. [2025-02-17 22:52:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states and 19540 transitions. [2025-02-17 22:52:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 4913. [2025-02-17 22:52:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4913 states, 4913 states have (on average 3.6995725625890494) internal successors, (18176), 4912 states have internal predecessors, (18176), 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 22:52:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 18176 transitions. [2025-02-17 22:52:13,619 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4913 states and 18176 transitions. [2025-02-17 22:52:13,619 INFO L432 stractBuchiCegarLoop]: Abstraction has 4913 states and 18176 transitions. [2025-02-17 22:52:13,619 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:52:13,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4913 states and 18176 transitions. [2025-02-17 22:52:13,644 INFO L131 ngComponentsAnalysis]: Automaton has 118 accepting balls. 354 [2025-02-17 22:52:13,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:13,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:13,646 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:52:13,646 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:13,646 INFO L752 eck$LassoCheckResult]: Stem: "[73] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[106] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[81] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[83] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[109] L14-1-->L38: 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]" "[112] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[115] L16-->L60: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:52:13,646 INFO L754 eck$LassoCheckResult]: Loop: "[99] L60-->L62: Formula: (< v_y2_1 v_z1_5) InVars {y2=v_y2_1, z1=v_z1_5} OutVars{y2=v_y2_1, z1=v_z1_5} AuxVars[] AssignedVars[]" "[101] L62-->L63: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[103] L63-->L60: Formula: (= v_c_7 (+ v_c_8 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:13,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash 923178508, now seen corresponding path program 1 times [2025-02-17 22:52:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:13,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098969975] [2025-02-17 22:52:13,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:13,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:13,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:52:13,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:52:13,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:13,652 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:13,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:52:13,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:52:13,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:13,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:13,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:13,665 INFO L85 PathProgramCache]: Analyzing trace with hash 128164, now seen corresponding path program 1 times [2025-02-17 22:52:13,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:13,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263187667] [2025-02-17 22:52:13,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:13,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:13,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:13,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:13,672 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:13,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:13,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:13,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:13,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1735433913, now seen corresponding path program 1 times [2025-02-17 22:52:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777249004] [2025-02-17 22:52:13,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:13,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:52:13,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:52:13,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:13,689 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:13,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:52:13,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:52:13,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:13,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:13,720 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:13,720 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:13,720 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:13,720 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:13,720 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:13,720 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,720 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:13,720 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:13,720 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:52:13,720 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:13,720 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:13,721 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:13,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:13,748 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:13,749 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:13,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:13,755 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 22:52:13,756 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 22:52:13,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:13,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:13,775 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 22:52:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:13,778 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 22:52:13,779 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 22:52:13,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:13,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:13,847 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:13,851 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 22:52:13,851 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:13,851 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:13,851 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:13,851 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:13,851 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:13,851 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,851 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:13,851 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:13,851 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:52:13,851 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:13,851 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:13,852 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:13,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:13,877 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:13,877 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:13,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:13,879 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 22:52:13,881 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 22:52:13,882 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 22:52:13,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:13,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:13,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:13,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:13,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:13,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:13,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:13,895 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:13,897 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:13,897 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:52:13,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:13,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:13,899 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 22:52:13,901 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 22:52:13,902 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:13,902 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:13,902 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:13,902 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z1) = -1*y2 + 1*z1 Supporting invariants [] [2025-02-17 22:52:13,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:13,912 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:13,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:13,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:52:13,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:52:13,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:13,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:13,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:13,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:13,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:13,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:13,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:13,940 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:13,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:14,008 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 22:52:14,015 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 22:52:14,016 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:52:14,016 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4913 states and 18176 transitions. cyclomatic complexity: 13606 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:52:14,142 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4913 states and 18176 transitions. cyclomatic complexity: 13606. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12942 states and 50530 transitions. Complement of second has 6 states. [2025-02-17 22:52:14,142 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 22:52:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:52:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-02-17 22:52:14,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:52:14,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:14,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 10 letters. Loop has 3 letters. [2025-02-17 22:52:14,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:14,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 7 letters. Loop has 6 letters. [2025-02-17 22:52:14,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:14,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12942 states and 50530 transitions. [2025-02-17 22:52:14,299 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:52:14,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12942 states to 0 states and 0 transitions. [2025-02-17 22:52:14,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:52:14,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:52:14,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:52:14,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:52:14,300 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:14,300 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:14,300 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:14,300 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:52:14,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:52:14,300 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:52:14,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:52:14,306 INFO L201 PluginConnector]: Adding new model pp4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:52:14 BoogieIcfgContainer [2025-02-17 22:52:14,306 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:52:14,307 INFO L158 Benchmark]: Toolchain (without parser) took 4976.21ms. Allocated memory was 142.6MB in the beginning and 289.4MB in the end (delta: 146.8MB). Free memory was 78.0MB in the beginning and 98.8MB in the end (delta: -20.8MB). Peak memory consumption was 129.8MB. Max. memory is 8.0GB. [2025-02-17 22:52:14,307 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:52:14,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.09ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 76.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:52:14,307 INFO L158 Benchmark]: Boogie Preprocessor took 11.52ms. Allocated memory is still 142.6MB. Free memory was 76.6MB in the beginning and 76.0MB in the end (delta: 596.5kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:52:14,308 INFO L158 Benchmark]: RCFGBuilder took 179.39ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 66.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:52:14,308 INFO L158 Benchmark]: BuchiAutomizer took 4766.54ms. Allocated memory was 142.6MB in the beginning and 289.4MB in the end (delta: 146.8MB). Free memory was 66.7MB in the beginning and 98.8MB in the end (delta: -32.1MB). Peak memory consumption was 117.2MB. Max. memory is 8.0GB. [2025-02-17 22:52:14,309 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 0.19ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.09ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 76.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 11.52ms. Allocated memory is still 142.6MB. Free memory was 76.6MB in the beginning and 76.0MB in the end (delta: 596.5kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 179.39ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 66.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 4766.54ms. Allocated memory was 142.6MB in the beginning and 289.4MB in the end (delta: 146.8MB). Free memory was 66.7MB in the beginning and 98.8MB in the end (delta: -32.1MB). Peak memory consumption was 117.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 1200 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.5s 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, 239 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 235 mSDsluCounter, 373 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 202 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 171 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.8s InitialAbstraction: Time to compute Ample Reduction [ms]: 826, Trivial Ample Sets caused by loops: 1881, Number of non-trivial ample sets: 2907, Number of pruned transitions: 2315, Number of transitions in reduction automaton: 4841, Number of states in reduction automaton: 1816, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:52:14,320 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...