/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:50:46,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:50:47,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:50:47,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:50:47,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:50:47,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:50:47,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:50:47,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:50:47,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:50:47,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:50:47,042 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:50:47,043 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:50:47,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:50:47,043 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:50:47,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:50:47,044 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:50:47,044 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:50:47,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:50:47,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:50:47,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:50:47,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:50:47,044 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:50:47,044 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 22:50:47,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:50:47,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:50:47,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:50:47,289 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:50:47,290 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:50:47,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl [2025-02-17 22:50:47,291 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/lock4.c.bpl' [2025-02-17 22:50:47,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:50:47,305 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:50:47,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:50:47,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:50:47,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:50:47,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,319 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:50:47,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:50:47,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:50:47,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:50:47,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:50:47,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,326 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:50:47,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:50:47,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:50:47,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:50:47,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/1) ... [2025-02-17 22:50:47,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:47,353 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 22:50:47,355 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 22:50:47,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:50:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:50:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:50:47,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:50:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:50:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:50:47,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:50:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:50:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:50:47,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:50:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:50:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:50:47,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:50:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:50:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:50:47,374 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 22:50:47,408 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:50:47,410 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:50:47,515 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:50:47,516 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:50:47,538 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:50:47,538 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:50:47,539 INFO L201 PluginConnector]: Adding new model lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:50:47 BoogieIcfgContainer [2025-02-17 22:50:47,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:50:47,541 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:50:47,541 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:50:47,546 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:50:47,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:50:47,547 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:50:47" (1/2) ... [2025-02-17 22:50:47,550 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43291312 and model type lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:50:47, skipping insertion in model container [2025-02-17 22:50:47,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:50:47,550 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:50:47" (2/2) ... [2025-02-17 22:50:47,551 INFO L363 chiAutomizerObserver]: Analyzing ICFG lock4.c.bpl [2025-02-17 22:50:47,624 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:50:47,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 45 transitions, 118 flow [2025-02-17 22:50:47,689 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2025-02-17 22:50:47,691 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:50:47,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 37 events. 4/37 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 104 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-02-17 22:50:47,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 45 transitions, 118 flow [2025-02-17 22:50:47,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2025-02-17 22:50:47,708 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:50:48,827 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:50:48,827 INFO L101 AmpleReduction]: Number of pruned transitions: 4225, Number of non-trivial ample sets: 4026 [2025-02-17 22:50:48,827 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 1771 [2025-02-17 22:50:48,837 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:50:48,837 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:50:48,837 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:50:48,837 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:50:48,837 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:50:48,837 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:50:48,837 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:50:48,837 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:50:48,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2791 states, 2790 states have (on average 2.4272401433691755) internal successors, (6772), 2790 states have internal predecessors, (6772), 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 22:50:48,923 INFO L131 ngComponentsAnalysis]: Automaton has 336 accepting balls. 1718 [2025-02-17 22:50:48,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:48,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:48,930 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:50:48,930 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:50:48,930 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:50:48,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2791 states, 2790 states have (on average 2.4272401433691755) internal successors, (6772), 2790 states have internal predecessors, (6772), 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 22:50:48,965 INFO L131 ngComponentsAnalysis]: Automaton has 336 accepting balls. 1718 [2025-02-17 22:50:48,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:48,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:48,966 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:50:48,966 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:50:48,970 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[98] $Ultimate##0-->L29: Formula: (and (= v_l_13 0) (< 0 v_l_14)) InVars {l=v_l_14} OutVars{l=v_l_13} AuxVars[] AssignedVars[l]" [2025-02-17 22:50:48,970 INFO L754 eck$LassoCheckResult]: Loop: "[100] L29-->L31: 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[]" "[102] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[104] L32-->L29: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-02-17 22:50:48,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:48,974 INFO L85 PathProgramCache]: Analyzing trace with hash 5027, now seen corresponding path program 1 times [2025-02-17 22:50:48,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:48,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625947720] [2025-02-17 22:50:48,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:48,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:49,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:49,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:49,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:49,023 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:49,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:49,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:49,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:49,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:49,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:49,041 INFO L85 PathProgramCache]: Analyzing trace with hash 129157, now seen corresponding path program 1 times [2025-02-17 22:50:49,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:49,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805274997] [2025-02-17 22:50:49,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:49,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:49,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:49,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:49,052 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:49,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:49,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:49,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:49,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:49,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash 149858723, now seen corresponding path program 1 times [2025-02-17 22:50:49,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:49,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112772225] [2025-02-17 22:50:49,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:49,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:49,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:49,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:49,062 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:49,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:49,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:49,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:49,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:49,105 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:49,106 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:49,106 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:49,106 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:49,106 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:49,106 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,106 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:49,106 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:49,106 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:50:49,106 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:49,106 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:49,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:49,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:49,223 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:49,224 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:49,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,228 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 22:50:49,231 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 22:50:49,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:49,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:49,255 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 22:50:49,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,257 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 22:50:49,259 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 22:50:49,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:49,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:49,290 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:50:49,290 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x2=0} Honda state: {x2=0} Generalized eigenvectors: [{x2=-8}, {x2=3}, {x2=4}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-02-17 22:50:49,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:49,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,298 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 22:50:49,300 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 22:50:49,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:49,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:49,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:50:49,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,323 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 22:50:49,325 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 22:50:49,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:49,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:49,392 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:49,396 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 22:50:49,396 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:49,396 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:49,396 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:49,396 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:49,396 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:49,396 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,396 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:49,397 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:49,397 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:50:49,397 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:49,397 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:49,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:49,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:49,435 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:49,438 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:49,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,443 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 22:50:49,444 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 22:50:49,446 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 22:50:49,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:49,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:49,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:49,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:49,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:49,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:49,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:49,468 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:50:49,474 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 22:50:49,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,477 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 22:50:49,477 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 22:50:49,478 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 22:50:49,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:49,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:49,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:49,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:49,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:49,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:49,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:49,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:49,495 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:50:49,496 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:50:49,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:49,499 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 22:50:49,500 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 22:50:49,503 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:49,503 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:49,503 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:49,504 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:50:49,510 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 22:50:49,512 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:49,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:49,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:50:49,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:50:49,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:49,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:49,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:49,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:49,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:49,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:49,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:49,554 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:49,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:49,586 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 22:50:49,600 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:50:49,606 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 2791 states, 2790 states have (on average 2.4272401433691755) internal successors, (6772), 2790 states have internal predecessors, (6772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:49,840 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 2791 states, 2790 states have (on average 2.4272401433691755) internal successors, (6772), 2790 states have internal predecessors, (6772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8574 states and 22723 transitions. Complement of second has 7 states. [2025-02-17 22:50:49,842 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 22:50:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2025-02-17 22:50:49,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:50:49,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:49,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:50:49,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:49,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 108 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:50:49,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:49,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8574 states and 22723 transitions. [2025-02-17 22:50:50,002 INFO L131 ngComponentsAnalysis]: Automaton has 516 accepting balls. 2238 [2025-02-17 22:50:50,006 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 22:50:50,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8574 states to 6441 states and 17932 transitions. [2025-02-17 22:50:50,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4215 [2025-02-17 22:50:50,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5171 [2025-02-17 22:50:50,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6441 states and 17932 transitions. [2025-02-17 22:50:50,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:50,092 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6441 states and 17932 transitions. [2025-02-17 22:50:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6441 states and 17932 transitions. [2025-02-17 22:50:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6441 to 4608. [2025-02-17 22:50:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4608 states have (on average 2.907986111111111) internal successors, (13400), 4607 states have internal predecessors, (13400), 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 22:50:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 13400 transitions. [2025-02-17 22:50:50,284 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4608 states and 13400 transitions. [2025-02-17 22:50:50,284 INFO L432 stractBuchiCegarLoop]: Abstraction has 4608 states and 13400 transitions. [2025-02-17 22:50:50,284 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:50:50,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4608 states and 13400 transitions. [2025-02-17 22:50:50,312 INFO L131 ngComponentsAnalysis]: Automaton has 401 accepting balls. 1865 [2025-02-17 22:50:50,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:50,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:50,312 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:50:50,312 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:50:50,313 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[131] L11-->$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]" "[105] $Ultimate##0-->L45: Formula: (and (= v_l_17 0) (< 0 v_l_18)) InVars {l=v_l_18} OutVars{l=v_l_17} AuxVars[] AssignedVars[l]" [2025-02-17 22:50:50,313 INFO L754 eck$LassoCheckResult]: Loop: "[107] L45-->L47: Formula: (< v_x2_3 v_z_3) InVars {x2=v_x2_3, z=v_z_3} OutVars{x2=v_x2_3, z=v_z_3} AuxVars[] AssignedVars[]" "[109] L47-->L48: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[111] L48-->L45: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-02-17 22:50:50,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 156965, now seen corresponding path program 1 times [2025-02-17 22:50:50,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:50,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734391950] [2025-02-17 22:50:50,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:50,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:50,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:50,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:50,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:50,362 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:50,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:50,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:50,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:50,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:50,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 1 times [2025-02-17 22:50:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650608129] [2025-02-17 22:50:50,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:50,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:50,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:50,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:50,367 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:50,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:50,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:50,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:50,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:50,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash 381283336, now seen corresponding path program 1 times [2025-02-17 22:50:50,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:50,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257242321] [2025-02-17 22:50:50,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:50,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:50,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:50:50,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:50:50,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:50,377 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:50,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:50:50,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:50:50,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:50,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:50,398 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:50,398 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:50,398 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:50,398 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:50,398 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:50,398 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,398 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:50,398 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:50,398 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:50:50,398 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:50,398 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:50,399 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:50,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:50,422 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:50,422 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:50,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,425 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 22:50:50,426 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 22:50:50,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:50,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:50,444 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 22:50:50,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,446 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 22:50:50,447 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 22:50:50,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:50,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:50,474 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:50:50,474 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x3=0} Honda state: {x3=0} Generalized eigenvectors: [{x3=-1}, {x3=1}, {x3=-1}] Lambdas: [2, 2, 1] Nus: [1, 1] [2025-02-17 22:50:50,479 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 22:50:50,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,483 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 22:50:50,484 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 22:50:50,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:50,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:50,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,508 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 22:50:50,509 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 22:50:50,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:50,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:50,577 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:50,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:50:50,582 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:50,582 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:50,582 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:50,582 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:50,582 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:50,582 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,582 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:50,582 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:50,582 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:50:50,582 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:50,582 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:50,583 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:50,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:50,612 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:50,612 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:50,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,615 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 22:50:50,617 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 22:50:50,618 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 22:50:50,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:50,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:50,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:50,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:50,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:50,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:50,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:50,631 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:50:50,636 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 22:50:50,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,639 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 22:50:50,640 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 22:50:50,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:50:50,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:50,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:50,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:50,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:50,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:50,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:50,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:50,654 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:50,660 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:50:50,660 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:50:50,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:50,663 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 22:50:50,664 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 22:50:50,665 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:50,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:50,665 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:50,665 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-02-17 22:50:50,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:50:50,673 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:50,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:50,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:50,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:50,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:50,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:50,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:50,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:50,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:50,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:50,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:50,699 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:50,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:50,728 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 22:50:50,729 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:50:50,729 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4608 states and 13400 transitions. cyclomatic complexity: 9306 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:50,952 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 22:50:50,970 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4608 states and 13400 transitions. cyclomatic complexity: 9306. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15353 states and 46112 transitions. Complement of second has 7 states. [2025-02-17 22:50:50,971 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 22:50:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-02-17 22:50:50,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:50:50,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:50,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:50:50,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:50,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:50:50,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:50,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15353 states and 46112 transitions. [2025-02-17 22:50:51,130 INFO L131 ngComponentsAnalysis]: Automaton has 595 accepting balls. 2494 [2025-02-17 22:50:51,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15353 states to 12539 states and 39105 transitions. [2025-02-17 22:50:51,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5670 [2025-02-17 22:50:51,267 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6895 [2025-02-17 22:50:51,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12539 states and 39105 transitions. [2025-02-17 22:50:51,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:51,268 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12539 states and 39105 transitions. [2025-02-17 22:50:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12539 states and 39105 transitions. [2025-02-17 22:50:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12539 to 9378. [2025-02-17 22:50:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9378 states, 9378 states have (on average 3.2686073789720624) internal successors, (30653), 9377 states have internal predecessors, (30653), 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 22:50:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9378 states to 9378 states and 30653 transitions. [2025-02-17 22:50:51,606 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9378 states and 30653 transitions. [2025-02-17 22:50:51,606 INFO L432 stractBuchiCegarLoop]: Abstraction has 9378 states and 30653 transitions. [2025-02-17 22:50:51,606 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:50:51,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9378 states and 30653 transitions. [2025-02-17 22:50:51,706 INFO L131 ngComponentsAnalysis]: Automaton has 482 accepting balls. 2117 [2025-02-17 22:50:51,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:51,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:51,706 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:50:51,706 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:50:51,708 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[131] L11-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[134] L12-->$Ultimate##0: 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]" "[112] $Ultimate##0-->L61: Formula: (and (= v_l_21 0) (< 0 v_l_22)) InVars {l=v_l_22} OutVars{l=v_l_21} AuxVars[] AssignedVars[l]" [2025-02-17 22:50:51,708 INFO L754 eck$LassoCheckResult]: Loop: "[114] L61-->L63: Formula: (< v_x3_4 v_z_6) InVars {x3=v_x3_4, z=v_z_6} OutVars{x3=v_x3_4, z=v_z_6} AuxVars[] AssignedVars[]" "[116] L63-->L64: Formula: (= (+ v_x3_6 1) v_x3_5) InVars {x3=v_x3_6} OutVars{x3=v_x3_5} AuxVars[] AssignedVars[x3]" "[118] L64-->L61: Formula: (= v_x4_2 (+ v_x4_1 1)) InVars {x4=v_x4_2} OutVars{x4=v_x4_1} AuxVars[] AssignedVars[x4]" [2025-02-17 22:50:51,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 4866926, now seen corresponding path program 1 times [2025-02-17 22:50:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044315109] [2025-02-17 22:50:51,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:51,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:50:51,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:50:51,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:51,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:51,714 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:51,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:50:51,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:50:51,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:51,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:51,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:51,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash 143059, now seen corresponding path program 1 times [2025-02-17 22:50:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18098672] [2025-02-17 22:50:51,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:51,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:51,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:51,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:51,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:51,725 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:51,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:51,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:51,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:51,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:51,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:51,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1038182330, now seen corresponding path program 1 times [2025-02-17 22:50:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207513365] [2025-02-17 22:50:51,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:51,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:50:51,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:50:51,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:51,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:51,734 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:51,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:50:51,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:50:51,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:51,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:51,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:51,755 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:51,755 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:51,755 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:51,755 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:51,755 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:51,755 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,755 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:51,755 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:51,755 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:50:51,755 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:51,755 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:51,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:51,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:51,783 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:51,783 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:51,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:51,785 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 22:50:51,788 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 22:50:51,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:51,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:51,804 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 22:50:51,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:51,807 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 22:50:51,808 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 22:50:51,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:51,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:51,833 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:50:51,833 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x4=0} Honda state: {x4=0} Generalized eigenvectors: [{x4=-5}, {x4=-3}, {x4=7}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-02-17 22:50:51,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:51,842 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:51,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:50:51,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:51,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:51,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:51,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:51,863 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:51,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:50:51,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:51,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:51,931 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:51,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-17 22:50:51,936 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:51,936 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:51,936 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:51,936 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:51,936 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:51,936 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,936 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:51,936 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:51,936 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:50:51,936 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:51,936 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:51,937 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:51,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:51,965 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:51,966 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:51,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:51,968 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:51,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:50:51,974 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 22:50:51,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:51,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:51,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:51,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:51,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:51,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:51,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:51,986 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:50:51,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:51,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:51,993 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:51,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:50:51,996 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 22:50:52,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:52,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:52,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:52,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:52,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:52,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:52,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:52,009 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:52,011 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:50:52,011 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:50:52,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:52,013 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:52,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:50:52,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:52,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:52,016 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:52,016 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:50:52,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:52,022 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:52,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:52,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:50:52,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:50:52,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:52,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:52,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:52,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:52,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:52,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:52,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:52,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:52,046 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:52,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:52,072 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 22:50:52,073 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:50:52,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9378 states and 30653 transitions. cyclomatic complexity: 22155 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 22:50:52,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-17 22:50:52,596 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9378 states and 30653 transitions. cyclomatic complexity: 22155. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 32799 states and 108702 transitions. Complement of second has 7 states. [2025-02-17 22:50:52,600 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 22:50:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 22:50:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-02-17 22:50:52,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 106 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:50:52,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:52,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 106 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:50:52,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:52,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 106 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-17 22:50:52,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:52,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32799 states and 108702 transitions. [2025-02-17 22:50:53,167 INFO L131 ngComponentsAnalysis]: Automaton has 659 accepting balls. 2697 [2025-02-17 22:50:53,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32799 states to 25411 states and 87524 transitions. [2025-02-17 22:50:53,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8122 [2025-02-17 22:50:53,403 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9532 [2025-02-17 22:50:53,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25411 states and 87524 transitions. [2025-02-17 22:50:53,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:53,403 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25411 states and 87524 transitions. [2025-02-17 22:50:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25411 states and 87524 transitions. [2025-02-17 22:50:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25411 to 19657. [2025-02-17 22:50:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19657 states, 19657 states have (on average 3.5820827186244086) internal successors, (70413), 19656 states have internal predecessors, (70413), 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 22:50:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19657 states to 19657 states and 70413 transitions. [2025-02-17 22:50:54,061 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19657 states and 70413 transitions. [2025-02-17 22:50:54,061 INFO L432 stractBuchiCegarLoop]: Abstraction has 19657 states and 70413 transitions. [2025-02-17 22:50:54,061 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:50:54,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19657 states and 70413 transitions. [2025-02-17 22:50:54,145 INFO L131 ngComponentsAnalysis]: Automaton has 561 accepting balls. 2379 [2025-02-17 22:50:54,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:54,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:54,146 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:50:54,146 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:50:54,146 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[131] L11-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[134] L12-->$Ultimate##0: 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]" "[137] L13-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[119] $Ultimate##0-->L77: Formula: (and (< 0 v_l_26) (= v_l_25 0)) InVars {l=v_l_26} OutVars{l=v_l_25} AuxVars[] AssignedVars[l]" [2025-02-17 22:50:54,146 INFO L754 eck$LassoCheckResult]: Loop: "[121] L77-->L79: Formula: (< v_x4_3 v_z_7) InVars {x4=v_x4_3, z=v_z_7} OutVars{x4=v_x4_3, z=v_z_7} AuxVars[] AssignedVars[]" "[123] L79-->L80: Formula: (= v_x4_4 (+ v_x4_5 1)) InVars {x4=v_x4_5} OutVars{x4=v_x4_4} AuxVars[] AssignedVars[x4]" "[125] L80-->L77: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-02-17 22:50:54,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash 150875600, now seen corresponding path program 1 times [2025-02-17 22:50:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:54,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517697412] [2025-02-17 22:50:54,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:54,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:54,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:54,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:54,151 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:54,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:54,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:54,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:54,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:54,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 150010, now seen corresponding path program 1 times [2025-02-17 22:50:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331760146] [2025-02-17 22:50:54,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:54,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:54,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:54,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:54,157 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:54,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:54,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:54,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:54,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:54,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2095639093, now seen corresponding path program 1 times [2025-02-17 22:50:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840878573] [2025-02-17 22:50:54,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:54,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:50:54,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:50:54,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:54,162 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:54,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:50:54,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:50:54,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:54,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:54,181 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:54,181 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:54,181 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:54,182 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:54,182 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:54,182 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,182 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:54,182 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:54,182 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:50:54,182 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:54,182 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:54,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:54,184 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:54,203 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:54,204 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:54,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,206 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:50:54,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:54,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:54,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-02-17 22:50:54,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,225 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:50:54,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:54,227 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:54,249 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:50:54,249 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=-1}, {x1=7}, {x1=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-02-17 22:50:54,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-02-17 22:50:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,257 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:50:54,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:54,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:54,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-17 22:50:54,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,275 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:50:54,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:54,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:54,346 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:54,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:54,351 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:54,351 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:54,351 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:54,351 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:54,351 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:54,351 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,351 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:54,351 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:54,351 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:50:54,351 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:54,351 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:54,353 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:54,356 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:54,378 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:54,378 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:54,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,381 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-17 22:50:54,384 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 22:50:54,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:54,395 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:54,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:54,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:54,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:54,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:54,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:54,397 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:50:54,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:54,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,404 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-17 22:50:54,406 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 22:50:54,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:54,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:54,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:54,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:54,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:54,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:54,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:54,418 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:54,421 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:50:54,421 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:50:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:54,423 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:54,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-17 22:50:54,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:54,425 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:54,425 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:54,425 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:50:54,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-02-17 22:50:54,431 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:54,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:54,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:50:54,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:50:54,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:54,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:54,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:54,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:54,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:54,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:54,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:54,453 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:54,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:54,473 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 22:50:54,474 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:50:54,474 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19657 states and 70413 transitions. cyclomatic complexity: 52353 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 22:50:54,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:55,320 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19657 states and 70413 transitions. cyclomatic complexity: 52353. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 65543 states and 229450 transitions. Complement of second has 7 states. [2025-02-17 22:50:55,321 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 22:50:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 22:50:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-02-17 22:50:55,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 104 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:50:55,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:55,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 104 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:50:55,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:55,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 104 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:50:55,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:50:55,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65543 states and 229450 transitions. [2025-02-17 22:50:56,118 INFO L131 ngComponentsAnalysis]: Automaton has 840 accepting balls. 3270 [2025-02-17 22:50:56,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65543 states to 54536 states and 199208 transitions. [2025-02-17 22:50:56,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12167 [2025-02-17 22:50:56,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13761 [2025-02-17 22:50:56,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54536 states and 199208 transitions. [2025-02-17 22:50:56,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:50:56,725 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54536 states and 199208 transitions. [2025-02-17 22:50:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54536 states and 199208 transitions. [2025-02-17 22:50:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54536 to 44305. [2025-02-17 22:50:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44305 states, 44305 states have (on average 3.8198171763909263) internal successors, (169237), 44304 states have internal predecessors, (169237), 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 22:50:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44305 states to 44305 states and 169237 transitions. [2025-02-17 22:50:57,906 INFO L240 hiAutomatonCegarLoop]: Abstraction has 44305 states and 169237 transitions. [2025-02-17 22:50:57,906 INFO L432 stractBuchiCegarLoop]: Abstraction has 44305 states and 169237 transitions. [2025-02-17 22:50:57,906 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:50:57,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44305 states and 169237 transitions. [2025-02-17 22:50:58,442 INFO L131 ngComponentsAnalysis]: Automaton has 704 accepting balls. 2840 [2025-02-17 22:50:58,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:50:58,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:50:58,443 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:50:58,444 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:50:58,444 INFO L752 eck$LassoCheckResult]: Stem: "[128] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[98] $Ultimate##0-->L29: Formula: (and (= v_l_13 0) (< 0 v_l_14)) InVars {l=v_l_14} OutVars{l=v_l_13} AuxVars[] AssignedVars[l]" "[131] L11-->$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]" "[100] L29-->L31: 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[]" "[102] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[105] $Ultimate##0-->L45: Formula: (and (= v_l_17 0) (< 0 v_l_18)) InVars {l=v_l_18} OutVars{l=v_l_17} AuxVars[] AssignedVars[l]" "[104] L32-->L29: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-02-17 22:50:58,444 INFO L754 eck$LassoCheckResult]: Loop: "[107] L45-->L47: Formula: (< v_x2_3 v_z_3) InVars {x2=v_x2_3, z=v_z_3} OutVars{x2=v_x2_3, z=v_z_3} AuxVars[] AssignedVars[]" "[109] L47-->L48: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[111] L48-->L45: Formula: (= v_x3_2 (+ v_x3_1 1)) InVars {x3=v_x3_2} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" [2025-02-17 22:50:58,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1986084255, now seen corresponding path program 1 times [2025-02-17 22:50:58,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455108288] [2025-02-17 22:50:58,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:50:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:58,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:50:58,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:50:58,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:58,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:58,492 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 22:50:58,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:50:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455108288] [2025-02-17 22:50:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455108288] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:50:58,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:50:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:50:58,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256622524] [2025-02-17 22:50:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:50:58,496 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:50:58,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 2 times [2025-02-17 22:50:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:50:58,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898775306] [2025-02-17 22:50:58,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:50:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:50:58,502 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:58,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:58,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:50:58,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:58,504 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:50:58,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:58,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:58,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:58,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:50:58,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:50:58,525 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:58,526 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:58,526 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:58,526 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:58,526 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:50:58,526 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,526 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:58,526 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:58,526 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:50:58,526 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:58,526 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:58,526 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:58,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:58,551 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:58,551 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:50:58,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,554 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:58,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-02-17 22:50:58,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:58,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:58,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-02-17 22:50:58,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,575 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:58,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-02-17 22:50:58,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:58,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:58,603 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:50:58,603 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x3=0} Honda state: {x3=0} Generalized eigenvectors: [{x3=-1}, {x3=1}, {x3=-1}] Lambdas: [2, 2, 1] Nus: [1, 1] [2025-02-17 22:50:58,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,611 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:58,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-02-17 22:50:58,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:50:58,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:58,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-02-17 22:50:58,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,633 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:58,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-02-17 22:50:58,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:50:58,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:50:58,705 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:50:58,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:58,710 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:50:58,710 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:50:58,710 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:50:58,710 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:50:58,710 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:50:58,710 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,710 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:50:58,710 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:50:58,710 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock4.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:50:58,710 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:50:58,710 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:50:58,711 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:58,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:50:58,737 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:50:58,738 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:50:58,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,740 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:50:58,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-02-17 22:50:58,743 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 22:50:58,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:58,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:58,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:58,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:58,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:58,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:58,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:58,757 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:50:58,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2025-02-17 22:50:58,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,765 INFO L229 MonitoredProcess]: Starting monitored process 35 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 22:50:58,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2025-02-17 22:50:58,768 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 22:50:58,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:50:58,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:50:58,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:50:58,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:50:58,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:50:58,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:50:58,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:50:58,780 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:50:58,782 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:50:58,782 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:50:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:50:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:50:58,784 INFO L229 MonitoredProcess]: Starting monitored process 36 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 22:50:58,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2025-02-17 22:50:58,785 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:50:58,785 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:50:58,785 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:50:58,785 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-02-17 22:50:58,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2025-02-17 22:50:58,790 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:50:58,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:50:58,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:50:58,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:50:58,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:58,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:58,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:50:58,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:58,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:50:58,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:50:58,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:50:58,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:50:58,820 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:50:58,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:50:58,848 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 22:50:58,848 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:50:58,848 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44305 states and 169237 transitions. cyclomatic complexity: 128096 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:50:59,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2025-02-17 22:51:00,693 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44305 states and 169237 transitions. cyclomatic complexity: 128096. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 184077 states and 684788 transitions. Complement of second has 7 states. [2025-02-17 22:51:00,694 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 22:51:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:51:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-02-17 22:51:00,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:51:00,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:00,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 10 letters. Loop has 3 letters. [2025-02-17 22:51:00,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:00,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 120 transitions. Stem has 7 letters. Loop has 6 letters. [2025-02-17 22:51:00,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:51:00,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184077 states and 684788 transitions. [2025-02-17 22:51:03,263 INFO L131 ngComponentsAnalysis]: Automaton has 1327 accepting balls. 5003 [2025-02-17 22:51:05,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184077 states to 149361 states and 549764 transitions. [2025-02-17 22:51:05,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28878 [2025-02-17 22:51:05,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32267 [2025-02-17 22:51:05,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149361 states and 549764 transitions. [2025-02-17 22:51:05,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:51:05,145 INFO L218 hiAutomatonCegarLoop]: Abstraction has 149361 states and 549764 transitions. [2025-02-17 22:51:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149361 states and 549764 transitions. [2025-02-17 22:51:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149361 to 81861. [2025-02-17 22:51:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81861 states, 81861 states have (on average 3.972954153992744) internal successors, (325230), 81860 states have internal predecessors, (325230), 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 22:51:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81861 states to 81861 states and 325230 transitions. [2025-02-17 22:51:08,084 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81861 states and 325230 transitions. [2025-02-17 22:51:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:51:08,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:51:08,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:51:08,088 INFO L87 Difference]: Start difference. First operand 81861 states and 325230 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 22:51:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:51:08,118 INFO L93 Difference]: Finished difference Result 550 states and 865 transitions. [2025-02-17 22:51:08,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 550 states and 865 transitions. [2025-02-17 22:51:08,120 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:51:08,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 550 states to 0 states and 0 transitions. [2025-02-17 22:51:08,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:51:08,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:51:08,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:51:08,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:51:08,121 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:51:08,121 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:51:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:51:08,122 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:51:08,122 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:51:08,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:51:08,122 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:51:08,122 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:51:08,129 INFO L201 PluginConnector]: Adding new model lock4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:51:08 BoogieIcfgContainer [2025-02-17 22:51:08,130 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:51:08,130 INFO L158 Benchmark]: Toolchain (without parser) took 20825.37ms. Allocated memory was 159.4MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 85.4MB in the beginning and 4.2GB in the end (delta: -4.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2025-02-17 22:51:08,130 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 86.2MB in the end (delta: 199.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:51:08,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.74ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:51:08,131 INFO L158 Benchmark]: Boogie Preprocessor took 9.28ms. Allocated memory is still 159.4MB. Free memory was 84.1MB in the beginning and 83.3MB in the end (delta: 828.7kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:51:08,131 INFO L158 Benchmark]: RCFGBuilder took 208.92ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 73.4MB in the end (delta: 9.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-02-17 22:51:08,131 INFO L158 Benchmark]: BuchiAutomizer took 20588.21ms. Allocated memory was 159.4MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 73.4MB in the beginning and 4.2GB in the end (delta: -4.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2025-02-17 22:51:08,132 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 0.13ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 86.2MB in the end (delta: 199.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 14.74ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 9.28ms. Allocated memory is still 159.4MB. Free memory was 84.1MB in the beginning and 83.3MB in the end (delta: 828.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 208.92ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 73.4MB in the end (delta: 9.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 20588.21ms. Allocated memory was 159.4MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 73.4MB in the beginning and 4.2GB in the end (delta: -4.2GB). Peak memory consumption was 1.7GB. 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 (1 trivial, 5 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 z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 20.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.3s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 5.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 88479 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 7.0s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 422 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 417 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 201 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 246 mSDtfsCounter, 461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 5 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 1.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 1173, Trivial Ample Sets caused by loops: 1771, Number of non-trivial ample sets: 4026, Number of pruned transitions: 4225, Number of transitions in reduction automaton: 6772, Number of states in reduction automaton: 2791, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:51:08,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...