/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 -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-a4216cd-m [2025-04-26 16:24:17,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:17,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:17,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:17,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:17,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:17,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:17,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:17,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:17,416 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:17,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:17,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:17,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:17,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:17,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:17,418 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:17,418 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:17,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:17,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:17,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:17,643 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:17,644 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:17,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl [2025-04-26 16:24:17,646 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl' [2025-04-26 16:24:17,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:17,658 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:17,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:17,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:17,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:17,666 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,687 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,693 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:17,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:17,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:17,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:17,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:17,701 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,701 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,703 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,703 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,705 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,705 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,709 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,709 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,710 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 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:17,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:17,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:17,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:17,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:17" (1/1) ... [2025-04-26 16:24:17,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:17,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:17,750 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) [2025-04-26 16:24:17,754 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 [2025-04-26 16:24:17,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:17,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:17,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:17,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:17,774 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:17,807 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:17,808 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:17,860 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:17,860 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:17,867 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:17,867 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:17,867 INFO L201 PluginConnector]: Adding new model complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:17 BoogieIcfgContainer [2025-04-26 16:24:17,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:17,868 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:17,868 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:17,873 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:17,873 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:17,873 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:17" (1/2) ... [2025-04-26 16:24:17,874 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43b8aeba and model type complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:17, skipping insertion in model container [2025-04-26 16:24:17,874 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:17,874 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 26.04 04:24:17" (2/2) ... [2025-04-26 16:24:17,875 INFO L376 chiAutomizerObserver]: Analyzing ICFG complex_thr1_2.c.bpl [2025-04-26 16:24:17,911 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:24:17,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 26 transitions, 66 flow [2025-04-26 16:24:17,948 INFO L116 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-04-26 16:24:17,950 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:24:17,953 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. [2025-04-26 16:24:17,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 26 transitions, 66 flow [2025-04-26 16:24:17,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 22 transitions, 56 flow [2025-04-26 16:24:17,955 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 25 places, 22 transitions, 56 flow [2025-04-26 16:24:17,963 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:17,963 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:17,963 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:17,963 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:17,963 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:17,964 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:17,964 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:17,964 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:17,965 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:17,992 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 42 [2025-04-26 16:24:17,992 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:17,992 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:17,995 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:17,995 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:17,995 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:17,995 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 61 states, but on-demand construction may add more states [2025-04-26 16:24:17,997 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 42 [2025-04-26 16:24:17,998 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:17,998 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:17,998 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:17,998 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:18,001 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]" "[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]" [2025-04-26 16:24:18,001 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]" [2025-04-26 16:24:18,005 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash 3460, now seen corresponding path program 1 times [2025-04-26 16:24:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:18,010 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169376702] [2025-04-26 16:24:18,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:18,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:18,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:18,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,055 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:18,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:18,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:18,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:18,073 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash 3299, now seen corresponding path program 1 times [2025-04-26 16:24:18,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:18,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562649008] [2025-04-26 16:24:18,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:18,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:18,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:18,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,080 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:18,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:18,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:18,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:18,087 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash 3327398, now seen corresponding path program 1 times [2025-04-26 16:24:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:18,087 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430245527] [2025-04-26 16:24:18,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:18,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:18,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:18,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,092 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:18,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:18,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:18,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:18,158 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:18,158 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:18,159 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:18,159 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:18,159 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:18,159 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,159 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:18,159 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:18,159 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:18,159 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:18,159 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:18,172 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:18,227 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:18,228 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:18,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:18,231 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) [2025-04-26 16:24:18,233 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 [2025-04-26 16:24:18,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:18,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:18,255 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 [2025-04-26 16:24:18,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:18,258 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) [2025-04-26 16:24:18,261 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 [2025-04-26 16:24:18,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:18,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:18,343 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:18,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:18,350 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:18,350 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:18,351 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:18,351 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:18,351 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:18,351 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,351 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:18,351 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:18,351 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:18,351 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:18,351 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:18,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:18,396 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:18,399 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:18,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:18,404 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) [2025-04-26 16:24:18,405 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 [2025-04-26 16:24:18,407 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 [2025-04-26 16:24:18,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:18,418 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:18,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:18,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:18,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:18,422 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:18,422 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:18,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:18,428 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:18,429 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:18,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:18,432 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) [2025-04-26 16:24:18,433 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 [2025-04-26 16:24:18,434 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:18,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:18,438 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:18,438 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:18,438 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x, y) = -1*x + 1*y Supporting invariants [] [2025-04-26 16:24:18,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:18,447 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:18,471 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:18,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:18,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:18,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:18,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:18,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:18,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:18,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:18,510 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:18,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:18,591 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 [2025-04-26 16:24:18,596 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 61 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:18,749 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 61 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 165 states and 436 transitions. Complement of second has 6 states. [2025-04-26 16:24:18,751 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-04-26 16:24:18,766 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:18,767 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:18,767 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:18,767 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:18,767 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:18,767 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:18,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 436 transitions. [2025-04-26 16:24:18,780 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 30 [2025-04-26 16:24:18,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 103 states and 262 transitions. [2025-04-26 16:24:18,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2025-04-26 16:24:18,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2025-04-26 16:24:18,788 INFO L74 IsDeterministic]: Start isDeterministic. Operand 103 states and 262 transitions. [2025-04-26 16:24:18,788 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:18,788 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 262 transitions. [2025-04-26 16:24:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 262 transitions. [2025-04-26 16:24:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 80. [2025-04-26 16:24:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 2.675) internal successors, (in total 214), 79 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 214 transitions. [2025-04-26 16:24:18,819 INFO L240 hiAutomatonCegarLoop]: Abstraction has 80 states and 214 transitions. [2025-04-26 16:24:18,819 INFO L438 stractBuchiCegarLoop]: Abstraction has 80 states and 214 transitions. [2025-04-26 16:24:18,819 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:18,819 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 214 transitions. [2025-04-26 16:24:18,820 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 30 [2025-04-26 16:24:18,820 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:18,820 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:18,820 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:18,821 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:18,821 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] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" [2025-04-26 16:24:18,821 INFO L754 eck$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]" [2025-04-26 16:24:18,821 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 3305839, now seen corresponding path program 1 times [2025-04-26 16:24:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:18,822 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513169194] [2025-04-26 16:24:18,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:18,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:18,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:18,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,826 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:18,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:18,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:18,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:18,830 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash 93473, now seen corresponding path program 1 times [2025-04-26 16:24:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:18,830 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330448148] [2025-04-26 16:24:18,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:18,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:18,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:18,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,833 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:18,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:18,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:18,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:18,836 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash -299934477, now seen corresponding path program 1 times [2025-04-26 16:24:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:18,836 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126144736] [2025-04-26 16:24:18,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:18,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:24:18,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:24:18,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,848 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:18,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:24:18,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:24:18,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:18,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:18,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:18,882 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:18,882 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:18,882 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:18,882 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:18,882 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:18,882 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,882 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:18,882 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:18,882 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:18,882 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:18,882 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:18,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:18,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:18,931 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:18,931 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:18,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:18,933 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) [2025-04-26 16:24:18,934 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 [2025-04-26 16:24:18,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:18,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:18,951 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 [2025-04-26 16:24:18,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:18,953 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) [2025-04-26 16:24:18,954 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 [2025-04-26 16:24:18,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:18,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:18,977 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:18,980 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 [2025-04-26 16:24:18,981 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:18,981 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:18,981 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:18,981 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:18,981 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:18,981 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:18,981 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:18,981 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:18,981 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:18,981 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:18,981 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:18,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:18,989 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:19,019 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:19,019 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:19,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,022 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) [2025-04-26 16:24:19,023 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 [2025-04-26 16:24:19,024 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 [2025-04-26 16:24:19,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:19,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:19,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:19,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:19,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:19,034 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:19,034 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:19,036 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:19,039 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:19,039 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:19,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,041 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) [2025-04-26 16:24:19,043 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 [2025-04-26 16:24:19,044 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:19,047 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 [2025-04-26 16:24:19,048 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:19,048 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:19,048 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i) = 1*i Supporting invariants [] [2025-04-26 16:24:19,053 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 [2025-04-26 16:24:19,054 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:19,064 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:19,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:19,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:19,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:19,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:19,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:19,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:19,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:19,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:19,079 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:19,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:19,116 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 [2025-04-26 16:24:19,116 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 80 states and 214 transitions. cyclomatic complexity: 149 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:19,146 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 80 states and 214 transitions. cyclomatic complexity: 149. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 204 states and 548 transitions. Complement of second has 7 states. [2025-04-26 16:24:19,148 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2025-04-26 16:24:19,149 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:24:19,149 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:19,149 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:24:19,149 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:19,149 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:24:19,149 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:19,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 204 states and 548 transitions. [2025-04-26 16:24:19,154 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-04-26 16:24:19,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 204 states to 160 states and 423 transitions. [2025-04-26 16:24:19,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2025-04-26 16:24:19,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83 [2025-04-26 16:24:19,159 INFO L74 IsDeterministic]: Start isDeterministic. Operand 160 states and 423 transitions. [2025-04-26 16:24:19,159 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:19,159 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 423 transitions. [2025-04-26 16:24:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 423 transitions. [2025-04-26 16:24:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 121. [2025-04-26 16:24:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 121 states have (on average 2.652892561983471) internal successors, (in total 321), 120 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 321 transitions. [2025-04-26 16:24:19,168 INFO L240 hiAutomatonCegarLoop]: Abstraction has 121 states and 321 transitions. [2025-04-26 16:24:19,168 INFO L438 stractBuchiCegarLoop]: Abstraction has 121 states and 321 transitions. [2025-04-26 16:24:19,168 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:19,168 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 121 states and 321 transitions. [2025-04-26 16:24:19,172 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-04-26 16:24:19,172 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:19,172 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:19,172 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:24:19,172 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:19,172 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] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" "[63] L24-1-->L29-1: Formula: (<= v_i_5 0) InVars {i=v_i_5} OutVars{i=v_i_5} AuxVars[] AssignedVars[]" [2025-04-26 16:24:19,172 INFO L754 eck$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]" [2025-04-26 16:24:19,173 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:19,173 INFO L85 PathProgramCache]: Analyzing trace with hash 102481072, now seen corresponding path program 1 times [2025-04-26 16:24:19,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:19,173 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000848335] [2025-04-26 16:24:19,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:19,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:19,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:19,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:19,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:19,229 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000848335] [2025-04-26 16:24:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000848335] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:19,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 16:24:19,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288295093] [2025-04-26 16:24:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:19,235 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:24:19,235 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 96388, now seen corresponding path program 1 times [2025-04-26 16:24:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:19,235 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438701200] [2025-04-26 16:24:19,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:19,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:19,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:19,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:19,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:19,241 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:19,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:19,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:19,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:19,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:19,272 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:19,272 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:19,272 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:19,272 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:19,272 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:19,272 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,272 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:19,272 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:19,272 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:19,272 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:19,272 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:19,273 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:19,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:19,307 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:19,307 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:19,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,311 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) [2025-04-26 16:24:19,312 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 [2025-04-26 16:24:19,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:19,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:19,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:19,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,334 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) [2025-04-26 16:24:19,335 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 [2025-04-26 16:24:19,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:19,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:19,361 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:19,362 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {z=0} Honda state: {z=0} Generalized eigenvectors: [{z=-1}, {z=7}, {z=-7}] Lambdas: [8, 1, 1] Nus: [1, 0] [2025-04-26 16:24:19,367 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 [2025-04-26 16:24:19,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,369 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) [2025-04-26 16:24:19,370 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 [2025-04-26 16:24:19,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:19,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:19,388 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 [2025-04-26 16:24:19,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,390 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) [2025-04-26 16:24:19,391 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 [2025-04-26 16:24:19,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:19,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:19,458 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:19,462 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 [2025-04-26 16:24:19,463 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:19,463 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:19,463 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:19,463 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:19,463 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:19,463 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,463 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:19,463 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:19,463 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:19,463 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:19,463 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:19,464 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:19,472 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:19,499 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:19,500 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:19,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:19,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:24:19,506 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 [2025-04-26 16:24:19,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:19,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:19,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:19,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:19,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:19,516 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:19,516 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:19,518 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:19,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:24:19,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,529 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:19,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:24:19,532 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 [2025-04-26 16:24:19,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:19,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:19,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:19,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:19,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:19,544 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:19,544 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:19,546 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:19,549 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:19,549 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:19,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:19,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:19,551 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:19,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:24:19,554 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:19,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:19,557 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:19,557 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:19,557 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i, y) = -1*i + 1*y Supporting invariants [] [2025-04-26 16:24:19,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:24:19,564 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:19,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:19,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:19,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:19,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:19,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:19,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:19,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:19,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:19,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:19,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:19,591 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:19,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:19,623 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 [2025-04-26 16:24:19,623 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 121 states and 321 transitions. cyclomatic complexity: 218 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:19,667 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 121 states and 321 transitions. cyclomatic complexity: 218. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 192 states and 502 transitions. Complement of second has 6 states. [2025-04-26 16:24:19,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2025-04-26 16:24:19,668 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:24:19,668 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:19,668 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 16:24:19,668 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:19,668 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2025-04-26 16:24:19,668 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:19,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 502 transitions. [2025-04-26 16:24:19,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:19,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 0 states and 0 transitions. [2025-04-26 16:24:19,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:19,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:19,671 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:19,671 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:19,671 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:19,671 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:19,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:19,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 16:24:19,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-26 16:24:19,673 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, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:19,675 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:19,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:19,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:19,675 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:19,675 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:24:19,675 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:19,675 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:19,676 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:19,676 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:19,676 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:19,681 INFO L201 PluginConnector]: Adding new model complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:19 BoogieIcfgContainer [2025-04-26 16:24:19,681 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:19,682 INFO L158 Benchmark]: Toolchain (without parser) took 2023.41ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 88.2MB in the beginning and 55.3MB in the end (delta: 32.9MB). Peak memory consumption was 29.1MB. Max. memory is 8.0GB. [2025-04-26 16:24:19,682 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.74ms. Allocated memory is still 159.4MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:19,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.19ms. Allocated memory is still 159.4MB. Free memory was 88.1MB in the beginning and 86.3MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:24:19,682 INFO L158 Benchmark]: Boogie Preprocessor took 24.07ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 85.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:19,683 INFO L158 Benchmark]: RCFGBuilder took 147.21ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 76.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:24:19,683 INFO L158 Benchmark]: BuchiAutomizer took 1813.31ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 76.2MB in the beginning and 55.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2025-04-26 16:24:19,684 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 0.74ms. Allocated memory is still 159.4MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.19ms. Allocated memory is still 159.4MB. Free memory was 88.1MB in the beginning and 86.3MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.07ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 85.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 147.21ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 76.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1813.31ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 76.2MB in the beginning and 55.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 62 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, 96 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 63 mSDtfsCounter, 80 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: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - 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. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:19,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...