/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:44,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:44,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:44,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:44,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:44,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:44,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:44,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:44,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:44,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:44,648 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:44,648 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:44,648 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:44,648 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:44,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:44,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:44,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:44,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:44,650 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:44,650 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:48:44,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:44,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:44,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:44,873 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:44,873 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:44,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl [2025-02-17 22:48:44,875 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl' [2025-02-17 22:48:44,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:44,887 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:44,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:44,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:44,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:44,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,905 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:44,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:44,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:44,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:44,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:44,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,915 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:44,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:44,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:44,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:44,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/1) ... [2025-02-17 22:48:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:44,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:44,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:48:44,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:44,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:44,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:44,976 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:48:45,009 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:45,010 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:45,069 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:45,069 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:45,076 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:45,076 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:45,077 INFO L201 PluginConnector]: Adding new model complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:45 BoogieIcfgContainer [2025-02-17 22:48:45,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:45,078 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:45,078 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:45,083 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:45,084 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:45,084 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:44" (1/2) ... [2025-02-17 22:48:45,085 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1af28ac1 and model type complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:45, skipping insertion in model container [2025-02-17 22:48:45,085 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:45,085 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:45" (2/2) ... [2025-02-17 22:48:45,086 INFO L363 chiAutomizerObserver]: Analyzing ICFG complex_thr1_2.c.bpl [2025-02-17 22:48:45,131 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:45,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 26 transitions, 66 flow [2025-02-17 22:48:45,190 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-02-17 22:48:45,194 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:45,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-02-17 22:48:45,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 26 transitions, 66 flow [2025-02-17 22:48:45,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 22 transitions, 56 flow [2025-02-17 22:48:45,208 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:45,341 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:45,341 INFO L101 AmpleReduction]: Number of pruned transitions: 27, Number of non-trivial ample sets: 36 [2025-02-17 22:48:45,341 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 30 [2025-02-17 22:48:45,349 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:45,349 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:45,349 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:45,349 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:45,349 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:45,349 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:45,349 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:45,349 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:45,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 56 states, 55 states have (on average 1.690909090909091) internal successors, (93), 55 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:45,360 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 38 [2025-02-17 22:48:45,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:45,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:45,364 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:45,365 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:45,365 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:45,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 56 states, 55 states have (on average 1.690909090909091) internal successors, (93), 55 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:45,367 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 38 [2025-02-17 22:48:45,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:45,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:45,367 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:45,367 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:45,370 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[81] L11-->L40: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:48:45,371 INFO L754 eck$LassoCheckResult]: Loop: "[73] L40-->L42: Formula: (< v_x_4 v_y_5) InVars {y=v_y_5, x=v_x_4} OutVars{y=v_y_5, x=v_x_4} AuxVars[] AssignedVars[]" "[75] L42-->L40: Formula: (= (+ v_x_6 1) v_x_5) InVars {x=v_x_6} OutVars{x=v_x_5} AuxVars[] AssignedVars[x]" [2025-02-17 22:48:45,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash 106659, now seen corresponding path program 1 times [2025-02-17 22:48:45,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416708226] [2025-02-17 22:48:45,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:45,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:45,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,423 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:45,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:45,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:45,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:45,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash 3299, now seen corresponding path program 1 times [2025-02-17 22:48:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285361748] [2025-02-17 22:48:45,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:45,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:45,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,444 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:45,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:45,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:45,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:45,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash 102501637, now seen corresponding path program 1 times [2025-02-17 22:48:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218826534] [2025-02-17 22:48:45,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:45,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:45,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,454 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:45,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:45,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:45,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,457 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:45,488 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:45,489 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:45,489 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:45,489 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:45,489 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:45,490 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,491 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:45,491 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:45,491 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:45,492 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:45,492 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:45,499 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:45,532 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:45,533 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:45,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:45,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:45,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:45,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:45,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:48:45,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:48:45,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:45,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:45,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:48:45,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:45,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:45,634 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:45,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:48:45,639 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:45,639 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:45,640 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:45,640 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:45,640 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:45,640 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,640 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:45,640 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:45,640 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:45,640 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:45,640 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:45,641 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:45,666 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:45,669 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:45,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:45,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:45,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:48:45,675 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:45,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:45,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:45,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:45,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:45,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:45,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:45,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:45,713 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:45,717 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:45,718 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:45,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:45,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:45,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:48:45,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:45,724 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:45,724 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:45,724 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, x) = 1*y - 1*x Supporting invariants [] [2025-02-17 22:48:45,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:45,733 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:45,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:48:45,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:45,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:45,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:45,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:45,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:45,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:45,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:45,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:45,800 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:45,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:45,850 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:48:45,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 56 states, 55 states have (on average 1.690909090909091) internal successors, (93), 55 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 22:48:45,946 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 56 states, 55 states have (on average 1.690909090909091) internal successors, (93), 55 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 130 states and 238 transitions. Complement of second has 6 states. [2025-02-17 22:48:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 22:48:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2025-02-17 22:48:45,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 58 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:48:45,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:45,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 58 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:48:45,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:45,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 58 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:48:45,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:45,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 238 transitions. [2025-02-17 22:48:45,961 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 30 [2025-02-17 22:48:45,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 77 states and 135 transitions. [2025-02-17 22:48:45,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2025-02-17 22:48:45,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2025-02-17 22:48:45,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 135 transitions. [2025-02-17 22:48:45,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:45,966 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 135 transitions. [2025-02-17 22:48:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 135 transitions. [2025-02-17 22:48:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2025-02-17 22:48:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.8153846153846154) internal successors, (118), 64 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 118 transitions. [2025-02-17 22:48:45,992 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 118 transitions. [2025-02-17 22:48:45,993 INFO L432 stractBuchiCegarLoop]: Abstraction has 65 states and 118 transitions. [2025-02-17 22:48:45,993 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:45,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 118 transitions. [2025-02-17 22:48:45,994 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 30 [2025-02-17 22:48:45,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:45,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:45,994 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:48:45,994 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:45,995 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" [2025-02-17 22:48:45,995 INFO L754 eck$LassoCheckResult]: Loop: "[64] L24-1-->L26: Formula: (< 0 v_i_2) InVars {i=v_i_2} OutVars{i=v_i_2} AuxVars[] AssignedVars[]" "[68] L26-->L27: Formula: (= (+ v_i_3 1) v_i_4) InVars {i=v_i_4} OutVars{i=v_i_3} AuxVars[] AssignedVars[i]" "[70] L27-->L24-1: Formula: (= (+ v_z_3 1) v_z_2) InVars {z=v_z_3} OutVars{z=v_z_2} AuxVars[] AssignedVars[z]" [2025-02-17 22:48:45,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 3305839, now seen corresponding path program 1 times [2025-02-17 22:48:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185922425] [2025-02-17 22:48:45,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:46,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:46,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,000 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:46,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:46,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:46,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:46,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash 93473, now seen corresponding path program 1 times [2025-02-17 22:48:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:46,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227137929] [2025-02-17 22:48:46,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:46,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,007 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:46,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:46,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -299934477, now seen corresponding path program 1 times [2025-02-17 22:48:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332178964] [2025-02-17 22:48:46,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:46,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:46,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:46,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,014 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:46,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:46,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:46,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:46,036 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,036 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,037 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,037 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,037 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:46,037 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,037 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,037 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,037 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:46,037 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,037 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,059 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,060 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:46,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:48:46,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:46,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:48:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:48:46,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:46,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,105 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:46,109 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 22:48:46,109 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,109 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,109 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,109 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,109 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:46,109 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,109 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,109 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,109 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:46,109 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,110 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,110 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,147 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,147 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:46,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,167 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:46,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:48:46,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:46,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:46,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:46,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:46,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:46,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:46,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:46,182 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:46,186 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:46,186 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,191 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:48:46,197 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:46,197 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:46,197 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:46,197 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(i) = 1*i Supporting invariants [] [2025-02-17 22:48:46,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:48:46,205 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:46,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:46,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:46,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,232 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:46,270 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 22:48:46,270 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 118 transitions. cyclomatic complexity: 67 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 22:48:46,308 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 118 transitions. cyclomatic complexity: 67. 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 156 states and 293 transitions. Complement of second has 7 states. [2025-02-17 22:48:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:46,309 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 22:48:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2025-02-17 22:48:46,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:48:46,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:48:46,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-17 22:48:46,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 293 transitions. [2025-02-17 22:48:46,313 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-02-17 22:48:46,314 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 118 states and 217 transitions. [2025-02-17 22:48:46,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2025-02-17 22:48:46,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2025-02-17 22:48:46,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 217 transitions. [2025-02-17 22:48:46,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:46,315 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 217 transitions. [2025-02-17 22:48:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 217 transitions. [2025-02-17 22:48:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2025-02-17 22:48:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 91 states have (on average 1.879120879120879) internal successors, (171), 90 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 171 transitions. [2025-02-17 22:48:46,319 INFO L240 hiAutomatonCegarLoop]: Abstraction has 91 states and 171 transitions. [2025-02-17 22:48:46,319 INFO L432 stractBuchiCegarLoop]: Abstraction has 91 states and 171 transitions. [2025-02-17 22:48:46,320 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:46,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 171 transitions. [2025-02-17 22:48:46,321 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-02-17 22:48:46,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:46,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:46,321 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:46,321 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:46,322 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" "[63] L24-1-->L29-1: Formula: (<= v_i_5 0) InVars {i=v_i_5} OutVars{i=v_i_5} AuxVars[] AssignedVars[]" [2025-02-17 22:48:46,322 INFO L754 eck$LassoCheckResult]: Loop: "[67] L29-1-->L31: Formula: (< v_i_6 v_y_2) InVars {i=v_i_6, y=v_y_2} OutVars{i=v_i_6, y=v_y_2} AuxVars[] AssignedVars[]" "[69] L31-->L32: Formula: (= (+ v_i_8 1) v_i_7) InVars {i=v_i_8} OutVars{i=v_i_7} AuxVars[] AssignedVars[i]" "[71] L32-->L29-1: Formula: (= v_z_5 (+ v_z_4 1)) InVars {z=v_z_5} OutVars{z=v_z_4} AuxVars[] AssignedVars[z]" [2025-02-17 22:48:46,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash 102481072, now seen corresponding path program 1 times [2025-02-17 22:48:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:46,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683923995] [2025-02-17 22:48:46,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:46,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:46,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:46,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683923995] [2025-02-17 22:48:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683923995] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:46,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:46,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:48:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541301574] [2025-02-17 22:48:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:46,361 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:48:46,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash 96388, now seen corresponding path program 1 times [2025-02-17 22:48:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:46,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846788228] [2025-02-17 22:48:46,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:46,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,367 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:46,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:46,401 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,401 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,402 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,402 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,402 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:46,402 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,402 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,402 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,404 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:46,404 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,404 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,405 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,439 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,440 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:46,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,442 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:48:46,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:46,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:48:46,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:48:46,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:46,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,533 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:46,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:48:46,537 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,537 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,537 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,537 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,538 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:46,538 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,538 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,538 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,538 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:46,538 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,538 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,572 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,572 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:46,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:48:46,577 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:46,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:46,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:46,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:46,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:46,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:46,588 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:46,588 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:46,591 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:46,593 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:46,594 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,614 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:46,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:48:46,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:46,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:46,615 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:46,616 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, i) = 1*y - 1*i Supporting invariants [] [2025-02-17 22:48:46,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:48:46,622 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:46,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:46,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:46,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,658 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:46,686 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 22:48:46,686 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 91 states and 171 transitions. cyclomatic complexity: 95 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 22:48:46,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 91 states and 171 transitions. cyclomatic complexity: 95. 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 142 states and 266 transitions. Complement of second has 6 states. [2025-02-17 22:48:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:46,719 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 22:48:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2025-02-17 22:48:46,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:48:46,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:48:46,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:48:46,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 266 transitions. [2025-02-17 22:48:46,725 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:46,725 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 0 states and 0 transitions. [2025-02-17 22:48:46,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:46,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:46,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:46,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:46,725 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:46,725 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:46,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:48:46,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:48:46,728 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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 22:48:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:46,730 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:48:46,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:48:46,730 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:46,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:48:46,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:46,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:46,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:46,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:46,730 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:46,730 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:48:46,731 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:46,731 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:46,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:46,731 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:46,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:46,737 INFO L201 PluginConnector]: Adding new model complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:46 BoogieIcfgContainer [2025-02-17 22:48:46,737 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:46,738 INFO L158 Benchmark]: Toolchain (without parser) took 1850.40ms. Allocated memory was 167.8MB in the beginning and 125.8MB in the end (delta: -41.9MB). Free memory was 93.0MB in the beginning and 41.4MB in the end (delta: 51.6MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2025-02-17 22:48:46,738 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:46,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.81ms. Allocated memory is still 167.8MB. Free memory was 93.0MB in the beginning and 91.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:46,738 INFO L158 Benchmark]: Boogie Preprocessor took 12.76ms. Allocated memory is still 167.8MB. Free memory was 91.9MB in the beginning and 91.1MB in the end (delta: 717.7kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:46,738 INFO L158 Benchmark]: RCFGBuilder took 155.25ms. Allocated memory is still 167.8MB. Free memory was 91.1MB in the beginning and 82.1MB in the end (delta: 9.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-02-17 22:48:46,738 INFO L158 Benchmark]: BuchiAutomizer took 1659.20ms. Allocated memory was 167.8MB in the beginning and 125.8MB in the end (delta: -41.9MB). Free memory was 82.1MB in the beginning and 41.4MB in the end (delta: 40.7MB). Peak memory consumption was 2.0MB. Max. memory is 8.0GB. [2025-02-17 22:48:46,739 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.81ms. Allocated memory is still 167.8MB. Free memory was 93.0MB in the beginning and 91.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 12.76ms. Allocated memory is still 167.8MB. Free memory was 91.9MB in the beginning and 91.1MB in the end (delta: 717.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 155.25ms. Allocated memory is still 167.8MB. Free memory was 91.1MB in the beginning and 82.1MB in the end (delta: 9.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 1659.20ms. Allocated memory was 167.8MB in the beginning and 125.8MB in the end (delta: -41.9MB). Free memory was 82.1MB in the beginning and 41.4MB in the end (delta: 40.7MB). Peak memory consumption was 2.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x + y and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function y + -1 * i and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 58 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 54ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 188, Trivial Ample Sets caused by loops: 30, Number of non-trivial ample sets: 36, Number of pruned transitions: 27, Number of transitions in reduction automaton: 93, Number of states in reduction automaton: 56, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:46,750 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 22:48:46,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:47,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...