/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/3_thr/m4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:49:03,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:49:03,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:49:03,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:49:03,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:49:03,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:49:03,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:49:03,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:49:03,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:49:03,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:49:03,733 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:49:03,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:49:03,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:49:03,734 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:49:03,734 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:49:03,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:49:03,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:49:03,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:49:03,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:49:03,734 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:49:03,734 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 22:49:03,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:49:03,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:49:03,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:49:03,948 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:49:03,949 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:49:03,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/m4.c.bpl [2025-02-17 22:49:03,950 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/m4.c.bpl' [2025-02-17 22:49:03,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:49:03,964 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:49:03,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:03,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:49:03,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:49:03,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,983 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:49:03,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:03,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:49:03,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:49:03,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:49:03,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,991 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:03,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:49:03,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:49:03,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:49:03,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:49:03,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/1) ... [2025-02-17 22:49:04,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:04,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:04,021 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 22:49:04,024 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 22:49:04,044 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:49:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:49:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:49:04,044 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:49:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:49:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:49:04,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:49:04,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:49:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:49:04,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:49:04,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:49:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:49:04,046 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 22:49:04,078 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:49:04,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:49:04,152 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:49:04,152 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:49:04,162 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:49:04,162 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:49:04,163 INFO L201 PluginConnector]: Adding new model m4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:04 BoogieIcfgContainer [2025-02-17 22:49:04,163 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:49:04,165 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:49:04,165 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:49:04,169 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:49:04,169 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:04,170 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:03" (1/2) ... [2025-02-17 22:49:04,172 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55cba1fb and model type m4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:49:04, skipping insertion in model container [2025-02-17 22:49:04,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:04,172 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:04" (2/2) ... [2025-02-17 22:49:04,173 INFO L363 chiAutomizerObserver]: Analyzing ICFG m4.c.bpl [2025-02-17 22:49:04,243 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-17 22:49:04,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 79 flow [2025-02-17 22:49:04,305 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2025-02-17 22:49:04,309 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-17 22:49:04,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-02-17 22:49:04,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 79 flow [2025-02-17 22:49:04,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-02-17 22:49:04,321 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:49:04,597 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:49:04,597 INFO L101 AmpleReduction]: Number of pruned transitions: 137, Number of non-trivial ample sets: 193 [2025-02-17 22:49:04,597 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 128 [2025-02-17 22:49:04,603 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:49:04,603 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:49:04,603 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:49:04,603 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:49:04,603 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:49:04,603 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:49:04,603 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:49:04,603 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:49:04,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 179 states, 178 states have (on average 2.140449438202247) internal successors, (381), 178 states have internal predecessors, (381), 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 22:49:04,621 INFO L131 ngComponentsAnalysis]: Automaton has 41 accepting balls. 104 [2025-02-17 22:49:04,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:04,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:04,626 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:49:04,627 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:04,627 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:49:04,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 179 states, 178 states have (on average 2.140449438202247) internal successors, (381), 178 states have internal predecessors, (381), 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 22:49:04,634 INFO L131 ngComponentsAnalysis]: Automaton has 41 accepting balls. 104 [2025-02-17 22:49:04,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:04,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:04,635 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:49:04,635 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:04,638 INFO L752 eck$LassoCheckResult]: Stem: "[48] $Ultimate##0-->L12: Formula: (= v_f_6 0) InVars {} OutVars{f=v_f_6} AuxVars[] AssignedVars[f]" "[73] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:49:04,639 INFO L754 eck$LassoCheckResult]: Loop: "[57] L23-->L25: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[59] L25-->L23: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:04,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2522, now seen corresponding path program 1 times [2025-02-17 22:49:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985306620] [2025-02-17 22:49:04,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:04,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:04,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:04,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:04,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:04,717 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:04,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:04,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:04,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:04,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:04,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:04,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2787, now seen corresponding path program 1 times [2025-02-17 22:49:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279038464] [2025-02-17 22:49:04,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:04,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:04,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:04,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:04,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:04,745 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:04,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:04,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:04,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:04,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:04,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:04,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2425468, now seen corresponding path program 1 times [2025-02-17 22:49:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:04,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509339811] [2025-02-17 22:49:04,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:04,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:04,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:04,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:04,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:04,758 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:04,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:04,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:04,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:04,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:04,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:04,788 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:04,789 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:04,790 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:04,790 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:04,790 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:04,790 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:04,790 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:04,790 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:04,790 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:49:04,790 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:04,790 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:04,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:04,859 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:04,860 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:04,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:04,864 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 22:49:04,866 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 22:49:04,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:04,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:04,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:04,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:04,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:04,893 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 22:49:04,894 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 22:49:04,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:04,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:04,968 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:04,973 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 22:49:04,973 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:04,973 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:04,973 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:04,973 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:04,973 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:04,973 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:04,973 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:04,973 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:04,973 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:49:04,973 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:04,973 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:04,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:05,000 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:05,010 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:05,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,015 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 22:49:05,017 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 22:49:05,021 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 22:49:05,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:05,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:05,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:05,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:05,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:05,050 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:05,050 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:05,057 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:05,062 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:05,062 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:05,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,066 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 22:49:05,067 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 22:49:05,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:05,068 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:05,068 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:05,069 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:49:05,075 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 22:49:05,077 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:05,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:05,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:05,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:05,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:05,121 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:05,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:05,147 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 22:49:05,168 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:49:05,169 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 179 states, 178 states have (on average 2.140449438202247) internal successors, (381), 178 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:05,284 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 179 states, 178 states have (on average 2.140449438202247) internal successors, (381), 178 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 595 states and 1353 transitions. Complement of second has 7 states. [2025-02-17 22:49:05,286 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 22:49:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2025-02-17 22:49:05,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:49:05,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:05,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:49:05,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:05,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:49:05,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:05,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 595 states and 1353 transitions. [2025-02-17 22:49:05,308 INFO L131 ngComponentsAnalysis]: Automaton has 59 accepting balls. 138 [2025-02-17 22:49:05,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 595 states to 374 states and 882 transitions. [2025-02-17 22:49:05,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2025-02-17 22:49:05,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2025-02-17 22:49:05,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 374 states and 882 transitions. [2025-02-17 22:49:05,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:05,324 INFO L218 hiAutomatonCegarLoop]: Abstraction has 374 states and 882 transitions. [2025-02-17 22:49:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states and 882 transitions. [2025-02-17 22:49:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 254. [2025-02-17 22:49:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 254 states have (on average 2.4803149606299213) internal successors, (630), 253 states have internal predecessors, (630), 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 22:49:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 630 transitions. [2025-02-17 22:49:05,373 INFO L240 hiAutomatonCegarLoop]: Abstraction has 254 states and 630 transitions. [2025-02-17 22:49:05,373 INFO L432 stractBuchiCegarLoop]: Abstraction has 254 states and 630 transitions. [2025-02-17 22:49:05,373 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:49:05,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 254 states and 630 transitions. [2025-02-17 22:49:05,376 INFO L131 ngComponentsAnalysis]: Automaton has 47 accepting balls. 114 [2025-02-17 22:49:05,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:05,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:05,376 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:49:05,376 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:05,377 INFO L752 eck$LassoCheckResult]: Stem: "[48] $Ultimate##0-->L12: Formula: (= v_f_6 0) InVars {} OutVars{f=v_f_6} AuxVars[] AssignedVars[f]" "[73] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[76] L12-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[79] L13-->L43: 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 22:49:05,377 INFO L754 eck$LassoCheckResult]: Loop: "[67] L43-->L45: Formula: (< v_x2_1 v_w_1) InVars {x2=v_x2_1, w=v_w_1} OutVars{x2=v_x2_1, w=v_w_1} AuxVars[] AssignedVars[]" "[69] L45-->L43: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:49:05,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2426077, now seen corresponding path program 1 times [2025-02-17 22:49:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355681679] [2025-02-17 22:49:05,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:05,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:05,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:05,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,385 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:05,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:05,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:05,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:05,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash 3107, now seen corresponding path program 1 times [2025-02-17 22:49:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848011124] [2025-02-17 22:49:05,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:05,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,397 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:05,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:05,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1963505153, now seen corresponding path program 1 times [2025-02-17 22:49:05,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:05,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554434929] [2025-02-17 22:49:05,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:05,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:05,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:05,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:05,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,411 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:05,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:05,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:05,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:05,431 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:05,431 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:05,431 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:05,431 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:05,431 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:05,431 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,431 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:05,431 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:05,431 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:49:05,431 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:05,431 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:05,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:05,449 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:05,449 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,451 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 22:49:05,453 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 22:49:05,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:05,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:05,471 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 22:49:05,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,476 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 22:49:05,477 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 22:49:05,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:05,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:05,548 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:05,552 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 22:49:05,553 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:05,553 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:05,553 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:05,553 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:05,554 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:05,554 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,554 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:05,554 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:05,554 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:49:05,554 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:05,554 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:05,555 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:05,572 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:05,572 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:05,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,574 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 22:49:05,576 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 22:49:05,576 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 22:49:05,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:05,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:05,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:05,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:05,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:05,588 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:05,588 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:05,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:05,593 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:05,593 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:05,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,595 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 22:49:05,597 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 22:49:05,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:05,598 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:05,598 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:05,598 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-02-17 22:49:05,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:05,605 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:05,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:05,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:05,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:05,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:05,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:05,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:05,633 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:05,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:05,647 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 22:49:05,648 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:49:05,648 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 254 states and 630 transitions. cyclomatic complexity: 437 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:05,702 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 254 states and 630 transitions. cyclomatic complexity: 437. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 622 states and 1703 transitions. Complement of second has 6 states. [2025-02-17 22:49:05,703 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 22:49:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-02-17 22:49:05,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:49:05,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:05,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:49:05,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:05,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:49:05,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:05,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 622 states and 1703 transitions. [2025-02-17 22:49:05,713 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 73 [2025-02-17 22:49:05,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 622 states to 361 states and 989 transitions. [2025-02-17 22:49:05,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2025-02-17 22:49:05,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 227 [2025-02-17 22:49:05,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 361 states and 989 transitions. [2025-02-17 22:49:05,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:05,718 INFO L218 hiAutomatonCegarLoop]: Abstraction has 361 states and 989 transitions. [2025-02-17 22:49:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states and 989 transitions. [2025-02-17 22:49:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 303. [2025-02-17 22:49:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 303 states have (on average 2.834983498349835) internal successors, (859), 302 states have internal predecessors, (859), 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 22:49:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 859 transitions. [2025-02-17 22:49:05,733 INFO L240 hiAutomatonCegarLoop]: Abstraction has 303 states and 859 transitions. [2025-02-17 22:49:05,734 INFO L432 stractBuchiCegarLoop]: Abstraction has 303 states and 859 transitions. [2025-02-17 22:49:05,734 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:49:05,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 303 states and 859 transitions. [2025-02-17 22:49:05,736 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 73 [2025-02-17 22:49:05,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:05,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:05,736 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:49:05,736 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:05,736 INFO L752 eck$LassoCheckResult]: Stem: "[48] $Ultimate##0-->L12: Formula: (= v_f_6 0) InVars {} OutVars{f=v_f_6} AuxVars[] AssignedVars[f]" "[73] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[76] L12-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[61] $Ultimate##0-->L34-1: Formula: (< 1 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[56] L23-->L27: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[58] L27-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" [2025-02-17 22:49:05,736 INFO L754 eck$LassoCheckResult]: Loop: "[63] L34-1-->L36: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[65] L36-->L34-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:05,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1963522803, now seen corresponding path program 1 times [2025-02-17 22:49:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:05,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555288701] [2025-02-17 22:49:05,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:05,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:05,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:05,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:05,776 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 22:49:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:49:05,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555288701] [2025-02-17 22:49:05,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555288701] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:49:05,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:49:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:49:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965175941] [2025-02-17 22:49:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:49:05,780 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:49:05,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2979, now seen corresponding path program 1 times [2025-02-17 22:49:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:05,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782497417] [2025-02-17 22:49:05,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:05,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:05,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,788 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:05,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:05,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:05,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:05,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:05,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:05,811 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:05,812 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:05,812 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:05,812 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:05,812 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:05,812 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,812 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:05,812 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:05,812 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:49:05,812 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:05,812 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:05,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:05,830 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:05,830 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:05,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,835 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 22:49:05,837 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 22:49:05,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:05,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:05,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:05,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,857 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 22:49:05,859 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 22:49:05,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:05,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:05,935 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:05,939 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 22:49:05,940 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:05,940 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:05,940 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:05,940 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:05,940 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:05,940 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,940 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:05,940 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:05,940 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:49:05,940 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:05,940 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:05,940 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:05,959 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:05,960 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:05,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,962 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 22:49:05,962 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 22:49:05,963 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 22:49:05,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:05,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:05,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:05,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:05,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:05,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:05,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:05,978 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:05,980 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:49:05,980 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:05,982 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 22:49:05,983 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 22:49:05,983 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:05,983 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:05,983 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:05,984 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, y) = 1*x1 - 1*y Supporting invariants [] [2025-02-17 22:49:05,989 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 22:49:05,990 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:06,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:06,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:06,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:06,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:06,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:06,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:06,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:06,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:06,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:06,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:06,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:06,030 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:06,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:06,044 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 22:49:06,045 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:49:06,045 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 303 states and 859 transitions. cyclomatic complexity: 618 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:06,089 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 303 states and 859 transitions. cyclomatic complexity: 618. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 544 states and 1543 transitions. Complement of second has 6 states. [2025-02-17 22:49:06,090 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 22:49:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-02-17 22:49:06,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 50 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:49:06,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:06,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 50 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:49:06,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:06,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 50 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:49:06,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:06,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 544 states and 1543 transitions. [2025-02-17 22:49:06,096 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 39 [2025-02-17 22:49:06,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 544 states to 209 states and 590 transitions. [2025-02-17 22:49:06,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2025-02-17 22:49:06,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2025-02-17 22:49:06,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 209 states and 590 transitions. [2025-02-17 22:49:06,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:06,100 INFO L218 hiAutomatonCegarLoop]: Abstraction has 209 states and 590 transitions. [2025-02-17 22:49:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states and 590 transitions. [2025-02-17 22:49:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-02-17 22:49:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 209 states have (on average 2.8229665071770333) internal successors, (590), 208 states have internal predecessors, (590), 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 22:49:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 590 transitions. [2025-02-17 22:49:06,108 INFO L240 hiAutomatonCegarLoop]: Abstraction has 209 states and 590 transitions. [2025-02-17 22:49:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:49:06,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:49:06,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:49:06,110 INFO L87 Difference]: Start difference. First operand 209 states and 590 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:49:06,120 INFO L93 Difference]: Finished difference Result 62 states and 123 transitions. [2025-02-17 22:49:06,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 123 transitions. [2025-02-17 22:49:06,121 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2025-02-17 22:49:06,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 110 transitions. [2025-02-17 22:49:06,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2025-02-17 22:49:06,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2025-02-17 22:49:06,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 110 transitions. [2025-02-17 22:49:06,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:06,122 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 110 transitions. [2025-02-17 22:49:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 110 transitions. [2025-02-17 22:49:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-02-17 22:49:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 57 states have (on average 1.9298245614035088) internal successors, (110), 56 states have internal predecessors, (110), 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 22:49:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 110 transitions. [2025-02-17 22:49:06,126 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 110 transitions. [2025-02-17 22:49:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:49:06,127 INFO L432 stractBuchiCegarLoop]: Abstraction has 57 states and 110 transitions. [2025-02-17 22:49:06,127 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:49:06,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 110 transitions. [2025-02-17 22:49:06,127 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2025-02-17 22:49:06,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:06,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:06,127 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:49:06,127 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:06,128 INFO L752 eck$LassoCheckResult]: Stem: "[48] $Ultimate##0-->L12: Formula: (= v_f_6 0) InVars {} OutVars{f=v_f_6} AuxVars[] AssignedVars[f]" "[73] L12-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[76] L12-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[79] L13-->L43: 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]" "[66] L43-->L47: Formula: (<= v_w_2 v_x2_4) InVars {x2=v_x2_4, w=v_w_2} OutVars{x2=v_x2_4, w=v_w_2} AuxVars[] AssignedVars[]" "[68] L47-->thread3FINAL: Formula: (= v_f_4 (+ v_f_5 1)) InVars {f=v_f_5} OutVars{f=v_f_4} AuxVars[] AssignedVars[f]" "[70] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[61] $Ultimate##0-->L34-1: Formula: (< 1 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[63] L34-1-->L36: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[65] L36-->L34-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:06,128 INFO L754 eck$LassoCheckResult]: Loop: "[63] L34-1-->L36: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[65] L36-->L34-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:06,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1217528120, now seen corresponding path program 1 times [2025-02-17 22:49:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315709082] [2025-02-17 22:49:06,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:06,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:49:06,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:49:06,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:06,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:06,160 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 22:49:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:49:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315709082] [2025-02-17 22:49:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315709082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:49:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:49:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:49:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869093892] [2025-02-17 22:49:06,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:49:06,161 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:49:06,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2979, now seen corresponding path program 2 times [2025-02-17 22:49:06,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620294345] [2025-02-17 22:49:06,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:49:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:06,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:06,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:06,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:49:06,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:06,164 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:06,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:06,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:06,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:06,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:06,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:06,179 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:06,179 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:06,179 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:06,179 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:06,179 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:06,179 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,179 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:06,179 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:06,179 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:49:06,179 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:06,179 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:06,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:06,195 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:06,195 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:06,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:06,197 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 22:49:06,198 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 22:49:06,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:06,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:06,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:06,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:06,219 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 22:49:06,220 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 22:49:06,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:06,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:06,294 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:06,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:49:06,299 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:06,299 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:06,299 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:06,299 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:06,299 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:06,299 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,299 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:06,299 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:06,299 INFO L132 ssoRankerPreferences]: Filename of dumped script: m4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:49:06,299 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:06,299 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:06,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:06,320 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:06,320 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:06,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:06,323 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 22:49:06,325 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 22:49:06,326 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 22:49:06,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:06,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:06,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:06,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:06,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:06,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:06,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:06,339 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:06,344 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:06,344 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:06,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:06,347 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 22:49:06,355 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 22:49:06,356 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:06,356 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:06,356 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:06,356 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, y) = 1*x1 - 1*y Supporting invariants [] [2025-02-17 22:49:06,362 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 22:49:06,363 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:06,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:49:06,369 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 22:49:06,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:06,374 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 22:49:06,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:49:06,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:49:06,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:06,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:06,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:06,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:06,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:06,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:06,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:06,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:06,403 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:06,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:06,415 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 22:49:06,415 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:49:06,415 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 110 transitions. cyclomatic complexity: 64 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:49:06,437 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 110 transitions. cyclomatic complexity: 64. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 78 states and 158 transitions. Complement of second has 7 states. [2025-02-17 22:49:06,438 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 22:49:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:49:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2025-02-17 22:49:06,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-17 22:49:06,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:06,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 12 letters. Loop has 2 letters. [2025-02-17 22:49:06,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:06,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2025-02-17 22:49:06,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:06,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 158 transitions. [2025-02-17 22:49:06,439 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2025-02-17 22:49:06,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 74 states and 149 transitions. [2025-02-17 22:49:06,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2025-02-17 22:49:06,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2025-02-17 22:49:06,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 149 transitions. [2025-02-17 22:49:06,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:06,440 INFO L218 hiAutomatonCegarLoop]: Abstraction has 74 states and 149 transitions. [2025-02-17 22:49:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 149 transitions. [2025-02-17 22:49:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2025-02-17 22:49:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 2.044776119402985) internal successors, (137), 66 states have internal predecessors, (137), 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 22:49:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 137 transitions. [2025-02-17 22:49:06,442 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 137 transitions. [2025-02-17 22:49:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:49:06,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:49:06,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:49:06,442 INFO L87 Difference]: Start difference. First operand 67 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:49:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:49:06,455 INFO L93 Difference]: Finished difference Result 39 states and 69 transitions. [2025-02-17 22:49:06,455 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 69 transitions. [2025-02-17 22:49:06,455 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:06,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 0 states and 0 transitions. [2025-02-17 22:49:06,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:49:06,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:49:06,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:49:06,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:49:06,456 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:06,456 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:49:06,457 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:06,457 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:49:06,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:49:06,457 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:06,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:49:06,463 INFO L201 PluginConnector]: Adding new model m4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:49:06 BoogieIcfgContainer [2025-02-17 22:49:06,463 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:49:06,464 INFO L158 Benchmark]: Toolchain (without parser) took 2499.54ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 86.7MB in the beginning and 96.9MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:06,464 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:06,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.47ms. Allocated memory is still 159.4MB. Free memory was 86.7MB in the beginning and 85.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:06,466 INFO L158 Benchmark]: Boogie Preprocessor took 10.35ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.7MB in the end (delta: 693.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:06,466 INFO L158 Benchmark]: RCFGBuilder took 167.89ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 75.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:49:06,468 INFO L158 Benchmark]: BuchiAutomizer took 2298.39ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 75.6MB in the beginning and 96.9MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:06,469 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.47ms. Allocated memory is still 159.4MB. Free memory was 86.7MB in the beginning and 85.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.35ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.7MB in the end (delta: 693.8kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 167.89ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 75.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2298.39ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 75.6MB in the beginning and 96.9MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function w + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function x1 + -1 * y and consists of 4 locations. One deterministic module has affine ranking function x1 + -1 * y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 185 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 197 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 107 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 57ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.3s InitialAbstraction: Time to compute Ample Reduction [ms]: 331, Trivial Ample Sets caused by loops: 128, Number of non-trivial ample sets: 193, Number of pruned transitions: 137, Number of transitions in reduction automaton: 381, Number of states in reduction automaton: 179, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:49:06,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:49:06,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...