/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-601be74-m [2025-02-17 22:45:29,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:29,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:29,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:29,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:29,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:29,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:29,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:29,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:29,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:29,841 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:29,841 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:29,841 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:29,841 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:29,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:29,842 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:29,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:29,843 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:29,843 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:29,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:29,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:29,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:29,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:29,844 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:29,844 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:30,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:30,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:30,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:30,087 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:30,087 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:30,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl [2025-02-17 22:45:30,089 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/complex_thr1_2.c.bpl' [2025-02-17 22:45:30,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:30,104 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:30,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:30,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:30,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:30,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,118 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:30,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:30,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:30,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:30,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:30,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,126 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:30,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:30,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:30,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:30,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/1) ... [2025-02-17 22:45:30,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:30,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:30,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:45:30,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:30,174 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:30,174 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:30,175 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:45:30,207 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:30,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:30,279 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:30,279 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:30,289 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:30,290 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:30,291 INFO L201 PluginConnector]: Adding new model complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:30 BoogieIcfgContainer [2025-02-17 22:45:30,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:30,292 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:30,292 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:30,297 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:30,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:30,297 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:30" (1/2) ... [2025-02-17 22:45:30,299 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25a3f764 and model type complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:30, skipping insertion in model container [2025-02-17 22:45:30,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:30,299 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:30" (2/2) ... [2025-02-17 22:45:30,301 INFO L363 chiAutomizerObserver]: Analyzing ICFG complex_thr1_2.c.bpl [2025-02-17 22:45:30,352 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:45:30,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 26 transitions, 66 flow [2025-02-17 22:45:30,395 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-02-17 22:45:30,397 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:45:30,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-02-17 22:45:30,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 26 transitions, 66 flow [2025-02-17 22:45:30,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 22 transitions, 56 flow [2025-02-17 22:45:30,410 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:30,410 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:30,410 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:30,410 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:30,410 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:30,410 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:30,410 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:30,410 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:30,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:30,441 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 42 [2025-02-17 22:45:30,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:30,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:30,446 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:30,446 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:30,446 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:30,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 61 states, but on-demand construction may add more states [2025-02-17 22:45:30,448 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 42 [2025-02-17 22:45:30,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:30,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:30,449 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:30,449 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:30,452 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]" [2025-02-17 22:45:30,453 INFO L754 eck$LassoCheckResult]: Loop: "[73] L40-->L42: Formula: (< v_x_4 v_y_5) InVars {y=v_y_5, x=v_x_4} OutVars{y=v_y_5, x=v_x_4} AuxVars[] AssignedVars[]" "[75] L42-->L40: Formula: (= (+ v_x_6 1) v_x_5) InVars {x=v_x_6} OutVars{x=v_x_5} AuxVars[] AssignedVars[x]" [2025-02-17 22:45:30,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash 3460, now seen corresponding path program 1 times [2025-02-17 22:45:30,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:30,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088676799] [2025-02-17 22:45:30,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:30,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:30,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:30,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:30,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:30,508 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:30,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:30,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:30,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:30,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:30,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash 3299, now seen corresponding path program 1 times [2025-02-17 22:45:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:30,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860006541] [2025-02-17 22:45:30,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:30,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:30,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:30,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:30,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:30,531 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:30,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:30,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:30,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:30,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:30,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 3327398, now seen corresponding path program 1 times [2025-02-17 22:45:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:30,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292128347] [2025-02-17 22:45:30,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:30,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:30,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:30,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:30,542 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:30,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:30,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:30,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:30,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:30,588 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:30,588 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:30,588 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:30,588 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:30,588 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:30,589 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,589 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:30,589 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:30,589 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:30,589 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:30,589 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:30,596 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:30,629 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:30,629 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:30,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:30,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:30,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:45:30,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:30,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:30,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:30,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:30,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:30,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:45:30,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:30,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:30,744 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:30,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:30,749 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:30,750 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:30,750 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:30,750 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:30,750 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:30,750 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,750 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:30,750 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:30,750 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:30,750 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:30,750 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:30,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:30,778 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:30,781 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:30,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:30,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:30,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:45:30,787 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:30,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:30,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:30,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:30,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:30,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:30,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:30,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:30,810 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:30,813 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:30,814 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:30,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:30,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:30,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:30,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:45:30,821 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:30,821 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:30,821 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:30,822 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x, y) = -1*x + 1*y Supporting invariants [] [2025-02-17 22:45:30,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:30,830 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:30,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:30,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:30,881 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 [2025-02-17 22:45:30,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:30,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:30,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:30,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:30,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:30,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:30,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:30,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:30,895 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:30,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:30,956 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:30,958 INFO L71 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, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,066 INFO L75 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, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 165 states and 436 transitions. Complement of second has 6 states. [2025-02-17 22:45:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-02-17 22:45:31,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:31,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:31,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:31,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,076 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 436 transitions. [2025-02-17 22:45:31,081 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 30 [2025-02-17 22:45:31,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 103 states and 262 transitions. [2025-02-17 22:45:31,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2025-02-17 22:45:31,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2025-02-17 22:45:31,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 262 transitions. [2025-02-17 22:45:31,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:31,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 262 transitions. [2025-02-17 22:45:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 262 transitions. [2025-02-17 22:45:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 80. [2025-02-17 22:45:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 2.675) internal successors, (214), 79 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 214 transitions. [2025-02-17 22:45:31,106 INFO L240 hiAutomatonCegarLoop]: Abstraction has 80 states and 214 transitions. [2025-02-17 22:45:31,106 INFO L432 stractBuchiCegarLoop]: Abstraction has 80 states and 214 transitions. [2025-02-17 22:45:31,106 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:31,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 214 transitions. [2025-02-17 22:45:31,108 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 30 [2025-02-17 22:45:31,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:31,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:31,108 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:45:31,108 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:31,109 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" [2025-02-17 22:45:31,109 INFO L754 eck$LassoCheckResult]: Loop: "[64] L24-1-->L26: Formula: (< 0 v_i_2) InVars {i=v_i_2} OutVars{i=v_i_2} AuxVars[] AssignedVars[]" "[68] L26-->L27: Formula: (= (+ v_i_3 1) v_i_4) InVars {i=v_i_4} OutVars{i=v_i_3} AuxVars[] AssignedVars[i]" "[70] L27-->L24-1: Formula: (= (+ v_z_3 1) v_z_2) InVars {z=v_z_3} OutVars{z=v_z_2} AuxVars[] AssignedVars[z]" [2025-02-17 22:45:31,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 3305839, now seen corresponding path program 1 times [2025-02-17 22:45:31,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:31,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116605598] [2025-02-17 22:45:31,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:31,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:31,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:31,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,113 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:31,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:31,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:31,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:31,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 93473, now seen corresponding path program 1 times [2025-02-17 22:45:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124366363] [2025-02-17 22:45:31,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:31,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:31,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:31,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,119 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:31,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:31,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:31,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:31,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -299934477, now seen corresponding path program 1 times [2025-02-17 22:45:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785449587] [2025-02-17 22:45:31,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:31,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:45:31,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:45:31,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,126 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:31,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:45:31,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:45:31,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:31,150 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:31,151 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:31,151 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:31,151 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:31,151 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:31,151 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,151 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:31,151 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:31,151 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:31,151 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:31,151 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:31,151 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,190 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:31,191 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:31,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:45:31,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:31,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:31,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:45:31,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:45:31,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:31,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:31,277 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:31,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:45:31,282 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:31,282 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:31,282 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:31,282 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:31,282 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:31,282 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,282 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:31,282 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:31,282 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:31,282 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:31,282 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:31,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,317 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:31,318 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:31,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,321 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:45:31,323 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:31,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:31,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:31,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:31,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:31,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:31,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:31,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:31,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:31,341 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:31,341 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:45:31,346 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:31,346 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:31,346 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:31,346 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(i) = 1*i Supporting invariants [] [2025-02-17 22:45:31,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:31,352 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:31,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:31,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:31,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:31,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:31,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:31,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:31,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:31,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:31,386 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:31,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:31,443 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:45:31,444 INFO L71 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, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,495 INFO L75 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, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 204 states and 548 transitions. Complement of second has 7 states. [2025-02-17 22:45:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2025-02-17 22:45:31,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:45:31,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:45:31,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-17 22:45:31,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 204 states and 548 transitions. [2025-02-17 22:45:31,511 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-02-17 22:45:31,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 204 states to 160 states and 423 transitions. [2025-02-17 22:45:31,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2025-02-17 22:45:31,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83 [2025-02-17 22:45:31,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 423 transitions. [2025-02-17 22:45:31,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:31,514 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 423 transitions. [2025-02-17 22:45:31,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 423 transitions. [2025-02-17 22:45:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 121. [2025-02-17 22:45:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 121 states have (on average 2.652892561983471) internal successors, (321), 120 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 321 transitions. [2025-02-17 22:45:31,522 INFO L240 hiAutomatonCegarLoop]: Abstraction has 121 states and 321 transitions. [2025-02-17 22:45:31,522 INFO L432 stractBuchiCegarLoop]: Abstraction has 121 states and 321 transitions. [2025-02-17 22:45:31,522 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:31,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 121 states and 321 transitions. [2025-02-17 22:45:31,523 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-02-17 22:45:31,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:31,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:31,523 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:45:31,523 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:31,524 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" "[63] L24-1-->L29-1: Formula: (<= v_i_5 0) InVars {i=v_i_5} OutVars{i=v_i_5} AuxVars[] AssignedVars[]" [2025-02-17 22:45:31,524 INFO L754 eck$LassoCheckResult]: Loop: "[67] L29-1-->L31: Formula: (< v_i_6 v_y_2) InVars {i=v_i_6, y=v_y_2} OutVars{i=v_i_6, y=v_y_2} AuxVars[] AssignedVars[]" "[69] L31-->L32: Formula: (= (+ v_i_8 1) v_i_7) InVars {i=v_i_8} OutVars{i=v_i_7} AuxVars[] AssignedVars[i]" "[71] L32-->L29-1: Formula: (= v_z_5 (+ v_z_4 1)) InVars {z=v_z_5} OutVars{z=v_z_4} AuxVars[] AssignedVars[z]" [2025-02-17 22:45:31,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 102481072, now seen corresponding path program 1 times [2025-02-17 22:45:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40796439] [2025-02-17 22:45:31,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:31,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:31,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:31,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:31,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40796439] [2025-02-17 22:45:31,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40796439] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:31,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:31,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:45:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962279539] [2025-02-17 22:45:31,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:31,576 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:45:31,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash 96388, now seen corresponding path program 1 times [2025-02-17 22:45:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341485471] [2025-02-17 22:45:31,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:31,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:31,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:31,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,583 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:31,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:31,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:31,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:31,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:31,611 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:31,611 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:31,611 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:31,611 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:31,611 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:31,611 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,611 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:31,611 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:31,611 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:31,611 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:31,611 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:31,612 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,615 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,648 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:31,648 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:45:31,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:31,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:31,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:45:31,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:45:31,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:31,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:31,699 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:45:31,699 INFO L401 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] [2025-02-17 22:45:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:45:31,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:45:31,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:31,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:31,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:31,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,725 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:45:31,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:31,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:31,792 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:31,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:45:31,797 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:31,798 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:31,798 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:31,798 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:31,798 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:31,798 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,798 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:31,798 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:31,798 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:31,798 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:31,798 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:31,799 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,804 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:31,835 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:31,835 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:31,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,838 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:45:31,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:31,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:31,850 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:31,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:31,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:31,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:31,851 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:31,851 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:31,853 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:45:31,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:45:31,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,861 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:45:31,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:31,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:31,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:31,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:31,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:31,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:31,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:31,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:31,877 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:31,880 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:31,880 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:31,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:31,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:31,882 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:31,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:45:31,884 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:31,884 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:31,885 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:31,885 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(i, y) = -1*i + 1*y Supporting invariants [] [2025-02-17 22:45:31,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:45:31,891 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:31,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:31,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:31,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:31,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:31,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:31,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:31,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:31,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:31,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:31,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:31,915 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:31,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:31,946 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:45:31,946 INFO L71 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, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,978 INFO L75 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, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 192 states and 502 transitions. Complement of second has 6 states. [2025-02-17 22:45:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2025-02-17 22:45:31,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:45:31,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:45:31,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:45:31,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:31,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 502 transitions. [2025-02-17 22:45:31,983 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:31,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 0 states and 0 transitions. [2025-02-17 22:45:31,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:31,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:31,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:31,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:31,985 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:31,985 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:31,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:45:31,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:45:31,987 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:31,989 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:45:31,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:45:31,989 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:31,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:45:31,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:31,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:31,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:31,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:31,989 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:31,989 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:45:31,990 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:31,990 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:45:31,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:31,990 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:31,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:31,994 INFO L201 PluginConnector]: Adding new model complex_thr1_2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:31 BoogieIcfgContainer [2025-02-17 22:45:31,994 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:31,995 INFO L158 Benchmark]: Toolchain (without parser) took 1891.06ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 86.9MB in the beginning and 44.7MB in the end (delta: 42.2MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. [2025-02-17 22:45:31,995 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.82ms. Allocated memory is still 159.4MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 57.5kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:31,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.18ms. Allocated memory is still 159.4MB. Free memory was 86.9MB in the beginning and 85.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:31,995 INFO L158 Benchmark]: Boogie Preprocessor took 10.54ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 84.8MB in the end (delta: 797.0kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:31,995 INFO L158 Benchmark]: RCFGBuilder took 159.81ms. Allocated memory is still 159.4MB. Free memory was 84.8MB in the beginning and 75.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:31,996 INFO L158 Benchmark]: BuchiAutomizer took 1702.25ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.9MB in the beginning and 44.7MB in the end (delta: 31.2MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. [2025-02-17 22:45:31,996 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 0.82ms. Allocated memory is still 159.4MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 57.5kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 15.18ms. Allocated memory is still 159.4MB. Free memory was 86.9MB in the beginning and 85.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.54ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 84.8MB in the end (delta: 797.0kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 159.81ms. Allocated memory is still 159.4MB. Free memory was 84.8MB in the beginning and 75.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1702.25ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.9MB in the beginning and 44.7MB in the end (delta: 31.2MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x + y and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function y + -1 * i and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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: 39ms 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: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:45:32,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:32,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:32,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...