/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/bb1.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:24,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:24,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:24,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:24,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:24,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:24,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:24,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:24,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:24,931 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:24,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:24,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:24,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:24,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:24,932 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:24,932 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:25,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:25,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:25,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:25,172 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:25,173 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:25,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/bb1.c.bpl [2025-02-17 22:45:25,174 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/bb1.c.bpl' [2025-02-17 22:45:25,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:25,187 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:25,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:25,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:25,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:25,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,203 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:25,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:25,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:25,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:25,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:25,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,212 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:25,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:25,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:25,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:25,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/1) ... [2025-02-17 22:45:25,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,245 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 22:45:25,248 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 22:45:25,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:25,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:25,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:25,266 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 22:45:25,295 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:25,297 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:25,341 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:25,342 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:25,348 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:25,348 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:25,349 INFO L201 PluginConnector]: Adding new model bb1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:25 BoogieIcfgContainer [2025-02-17 22:45:25,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:25,349 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:25,349 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:25,353 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:25,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:25,353 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:25" (1/2) ... [2025-02-17 22:45:25,354 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cc51695 and model type bb1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:25, skipping insertion in model container [2025-02-17 22:45:25,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:25,355 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:25" (2/2) ... [2025-02-17 22:45:25,356 INFO L363 chiAutomizerObserver]: Analyzing ICFG bb1.c.bpl [2025-02-17 22:45:25,402 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:45:25,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 18 transitions, 50 flow [2025-02-17 22:45:25,450 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-02-17 22:45:25,452 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:45:25,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2025-02-17 22:45:25,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 18 transitions, 50 flow [2025-02-17 22:45:25,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 14 transitions, 40 flow [2025-02-17 22:45:25,466 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:25,467 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:25,467 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:25,467 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:25,467 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:25,467 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:25,467 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:25,467 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:25,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:25,490 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-02-17 22:45:25,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:25,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:25,492 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:45:25,492 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:25,493 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:25,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 31 states, but on-demand construction may add more states [2025-02-17 22:45:25,494 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-02-17 22:45:25,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:25,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:25,494 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:45:25,494 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:25,498 INFO L752 eck$LassoCheckResult]: Stem: "[48] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-02-17 22:45:25,498 INFO L754 eck$LassoCheckResult]: Loop: "[35] L21-->L23: Formula: (< (+ v_x2_1 v_x1_1) v_z_1) InVars {x1=v_x1_1, x2=v_x2_1, z=v_z_1} OutVars{x1=v_x1_1, x2=v_x2_1, z=v_z_1} AuxVars[] AssignedVars[]" "[37] L23-->L24: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[38] L24-->L21: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:25,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 1 times [2025-02-17 22:45:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115655988] [2025-02-17 22:45:25,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:25,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:45:25,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:45:25,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,556 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:25,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:45:25,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:45:25,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:25,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash 64611, now seen corresponding path program 1 times [2025-02-17 22:45:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:25,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636121115] [2025-02-17 22:45:25,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:25,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:25,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:25,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:25,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,586 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:25,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:25,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:25,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:25,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2388309, now seen corresponding path program 1 times [2025-02-17 22:45:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:25,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785381637] [2025-02-17 22:45:25,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:25,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:25,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:25,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,607 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:25,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:25,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:25,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:25,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:25,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:25,687 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:25,687 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:25,687 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:25,687 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:25,688 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:25,688 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,688 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:25,688 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:25,689 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb1.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:25,689 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:25,689 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:25,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:25,762 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:25,763 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:25,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,767 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 22:45:25,769 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 22:45:25,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:25,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:25,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:45:25,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,796 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 22:45:25,797 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 22:45:25,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:25,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:25,884 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:25,888 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 22:45:25,889 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:25,889 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:25,889 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:25,889 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:25,889 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:25,889 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,889 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:25,889 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:25,889 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb1.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:25,889 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:25,889 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:25,893 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:25,930 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:25,933 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:25,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,936 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 22:45:25,938 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 22:45:25,939 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 22:45:25,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:25,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:25,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:25,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:25,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:25,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:25,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:25,959 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:25,962 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:25,963 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:25,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:25,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:25,966 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 22:45:25,981 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 22:45:25,982 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:25,982 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:25,983 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:25,983 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z, x2) = -1*x1 + 1*z - 1*x2 Supporting invariants [] [2025-02-17 22:45:25,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:45:25,992 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:26,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:45:26,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:45:26,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,026 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:26,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:26,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,037 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,092 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 22:45:26,109 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 22:45:26,112 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 31 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.0) 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 22:45:26,196 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 31 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.0) 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 88 states and 186 transitions. Complement of second has 6 states. [2025-02-17 22:45:26,205 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 22:45:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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 22:45:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2025-02-17 22:45:26,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 1 letters. Loop has 3 letters. [2025-02-17 22:45:26,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:45:26,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 1 letters. Loop has 6 letters. [2025-02-17 22:45:26,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 186 transitions. [2025-02-17 22:45:26,244 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:45:26,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:45:26,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 37 states and 80 transitions. [2025-02-17 22:45:26,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2025-02-17 22:45:26,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2025-02-17 22:45:26,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 80 transitions. [2025-02-17 22:45:26,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:26,249 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 80 transitions. [2025-02-17 22:45:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 80 transitions. [2025-02-17 22:45:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-02-17 22:45:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 30 states have internal predecessors, (68), 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 22:45:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 68 transitions. [2025-02-17 22:45:26,265 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 68 transitions. [2025-02-17 22:45:26,265 INFO L432 stractBuchiCegarLoop]: Abstraction has 31 states and 68 transitions. [2025-02-17 22:45:26,265 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:26,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 68 transitions. [2025-02-17 22:45:26,266 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:45:26,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:26,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:26,266 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:26,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:26,267 INFO L752 eck$LassoCheckResult]: Stem: "[48] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[45] L12-->L31: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:26,267 INFO L754 eck$LassoCheckResult]: Loop: "[40] L31-->L33: Formula: (< v_x2_5 v_z_3) InVars {x2=v_x2_5, z=v_z_3} OutVars{x2=v_x2_5, z=v_z_3} AuxVars[] AssignedVars[]" "[42] L33-->L31: Formula: (= (+ v_x2_7 1) v_x2_6) InVars {x2=v_x2_7} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[x2]" [2025-02-17 22:45:26,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2494, now seen corresponding path program 1 times [2025-02-17 22:45:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988318799] [2025-02-17 22:45:26,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,272 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 1 times [2025-02-17 22:45:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218028151] [2025-02-17 22:45:26,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,278 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2398016, now seen corresponding path program 1 times [2025-02-17 22:45:26,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:26,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800909916] [2025-02-17 22:45:26,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:26,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:26,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:26,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,283 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:26,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:26,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:26,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:26,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:26,302 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:26,302 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:26,302 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:26,302 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:26,302 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:26,302 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,303 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:26,303 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:26,303 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb1.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:26,303 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:26,303 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:26,303 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:26,322 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:26,322 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:26,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,325 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 22:45:26,326 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 22:45:26,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:26,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:26,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:26,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,347 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 22:45:26,348 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 22:45:26,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:26,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:26,409 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:26,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:26,413 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:26,414 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:26,414 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:26,414 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:26,414 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:26,414 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,414 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:26,414 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:26,414 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb1.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:26,414 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:26,414 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:26,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:26,431 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:26,431 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:26,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,433 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 22:45:26,434 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 22:45:26,436 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 22:45:26,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:26,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:26,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:26,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:26,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:26,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:26,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:26,452 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:26,456 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:26,456 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:26,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:26,458 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 22:45:26,459 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 22:45:26,460 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:26,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:26,460 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:26,460 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-02-17 22:45:26,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:45:26,466 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:26,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:26,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:26,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:26,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:26,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:26,496 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:26,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:26,512 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 22:45:26,513 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 22:45:26,513 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 68 transitions. cyclomatic complexity: 45 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 22:45:26,557 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 68 transitions. cyclomatic complexity: 45. 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 97 states and 222 transitions. Complement of second has 6 states. [2025-02-17 22:45:26,558 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 22:45:26,559 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 22:45:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2025-02-17 22:45:26,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:26,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:26,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:26,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:26,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 222 transitions. [2025-02-17 22:45:26,562 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:26,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 0 states and 0 transitions. [2025-02-17 22:45:26,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:26,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:26,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:26,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:26,562 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:26,562 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:26,562 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:26,562 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:26,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:26,562 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:26,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:26,567 INFO L201 PluginConnector]: Adding new model bb1.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:26 BoogieIcfgContainer [2025-02-17 22:45:26,567 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:26,567 INFO L158 Benchmark]: Toolchain (without parser) took 1379.96ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 83.8MB in the beginning and 83.4MB in the end (delta: 465.6kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:26,568 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:26,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.71ms. Allocated memory is still 155.2MB. Free memory was 83.8MB in the beginning and 82.5MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-02-17 22:45:26,568 INFO L158 Benchmark]: Boogie Preprocessor took 13.10ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 81.8MB in the end (delta: 696.1kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:26,568 INFO L158 Benchmark]: RCFGBuilder took 129.99ms. Allocated memory is still 155.2MB. Free memory was 81.8MB in the beginning and 73.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:26,568 INFO L158 Benchmark]: BuchiAutomizer took 1217.66ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 73.6MB in the beginning and 83.4MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:26,569 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 0.19ms. Allocated memory is still 155.2MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.71ms. Allocated memory is still 155.2MB. Free memory was 83.8MB in the beginning and 82.5MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.10ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 81.8MB in the end (delta: 696.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 129.99ms. Allocated memory is still 155.2MB. Free memory was 81.8MB in the beginning and 73.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1217.66ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 73.6MB in the beginning and 83.4MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 13 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 49ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s 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 22:45:26,582 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 22:45:26,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...