/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/interleaved2-buggy.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:31,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:31,766 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:31,772 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:31,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:31,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:31,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:31,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:31,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:31,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:31,795 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:31,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:31,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:31,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:31,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:31,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:31,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:31,797 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:31,797 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:32,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:32,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:32,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:32,012 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:32,013 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:32,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/interleaved2-buggy.c.bpl [2025-02-17 22:45:32,016 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/interleaved2-buggy.c.bpl' [2025-02-17 22:45:32,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:32,035 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:32,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:32,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:32,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:32,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,056 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:32,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:32,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:32,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:32,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:32,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,066 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:32,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:32,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:32,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:32,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/1) ... [2025-02-17 22:45:32,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:32,100 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 22:45:32,103 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 22:45:32,122 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:32,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:32,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:32,125 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 22:45:32,157 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:32,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:32,219 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:32,219 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:32,236 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:32,237 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:32,237 INFO L201 PluginConnector]: Adding new model interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:32 BoogieIcfgContainer [2025-02-17 22:45:32,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:32,238 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:32,238 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:32,243 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:32,244 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:32,244 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:32" (1/2) ... [2025-02-17 22:45:32,246 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70c506b6 and model type interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:32, skipping insertion in model container [2025-02-17 22:45:32,246 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:32,246 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:32" (2/2) ... [2025-02-17 22:45:32,247 INFO L363 chiAutomizerObserver]: Analyzing ICFG interleaved2-buggy.c.bpl [2025-02-17 22:45:32,298 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:45:32,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 56 flow [2025-02-17 22:45:32,358 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-02-17 22:45:32,360 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:45:32,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-02-17 22:45:32,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 56 flow [2025-02-17 22:45:32,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2025-02-17 22:45:32,376 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:32,376 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:32,376 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:32,376 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:32,376 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:32,376 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:32,376 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:32,376 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:32,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:32,402 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 33 [2025-02-17 22:45:32,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:32,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:32,405 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:32,405 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:45:32,405 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:32,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 44 states, but on-demand construction may add more states [2025-02-17 22:45:32,407 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 33 [2025-02-17 22:45:32,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:32,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:32,408 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:32,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:45:32,412 INFO L752 eck$LassoCheckResult]: Stem: "[39] $Ultimate##0-->L12: Formula: (and (= v_f2_4 0) (= v_f1_3 0) (= v_x1_5 0) (= v_x2_5 0)) InVars {x1=v_x1_5, f2=v_f2_4, x2=v_x2_5, f1=v_f1_3} OutVars{x1=v_x1_5, f2=v_f2_4, x2=v_x2_5, f1=v_f1_3} AuxVars[] AssignedVars[]" "[57] L12-->L25-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:32,412 INFO L754 eck$LassoCheckResult]: Loop: "[45] L25-1-->L23: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[47] L23-->L24: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[48] L24-->L25: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[49] L25-->L25-1: Formula: (and (= v_f1_4 0) (< 0 v_f1_5)) InVars {f1=v_f1_5} OutVars{f1=v_f1_4} AuxVars[] AssignedVars[f1]" [2025-02-17 22:45:32,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2227, now seen corresponding path program 1 times [2025-02-17 22:45:32,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930267838] [2025-02-17 22:45:32,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:32,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:32,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:32,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:32,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:32,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:32,468 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:32,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:32,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:32,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:32,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:32,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:32,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2310820, now seen corresponding path program 1 times [2025-02-17 22:45:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:32,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567394638] [2025-02-17 22:45:32,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:32,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:32,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:32,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:32,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:32,497 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:32,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:32,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:32,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:32,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:32,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:32,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:32,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2058068566, now seen corresponding path program 1 times [2025-02-17 22:45:32,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:32,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22168444] [2025-02-17 22:45:32,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:32,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:32,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:45:32,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:45:32,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:32,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:32,573 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 22:45:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22168444] [2025-02-17 22:45:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22168444] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:32,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:32,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-17 22:45:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128168039] [2025-02-17 22:45:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:32,644 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:32,644 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:32,645 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:32,645 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:32,645 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:32,645 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,646 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:32,646 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:32,646 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved2-buggy.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:32,646 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:32,646 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:32,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:32,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:32,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:32,715 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:32,715 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:32,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:32,718 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 22:45:32,719 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 22:45:32,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:32,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:32,732 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:45:32,732 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2=1} Honda state: {f2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:45:32,737 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 22:45:32,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:32,739 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 22:45:32,740 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 22:45:32,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:32,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:32,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:45:32,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:32,758 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 22:45:32,760 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 22:45:32,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:32,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:32,827 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:32,832 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 22:45:32,832 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:32,832 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:32,832 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:32,832 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:32,832 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:32,832 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,832 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:32,832 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:32,832 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved2-buggy.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:32,832 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:32,832 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:32,833 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:32,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:32,848 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:32,899 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:32,902 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:32,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:32,905 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 22:45:32,907 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 22:45:32,908 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 22:45:32,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:32,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:32,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:32,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:32,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:32,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:32,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:32,930 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:32,934 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:32,934 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:32,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:32,938 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 22:45:32,940 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 22:45:32,941 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:32,941 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:32,941 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:32,942 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:45:32,968 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 22:45:32,972 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:32,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:32,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:33,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:33,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:33,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:33,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:33,030 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 22:45:33,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:33,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:33,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:33,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:33,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:33,113 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 22:45:33,146 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 22:45:33,163 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 44 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:33,235 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 44 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 106 states and 217 transitions. Complement of second has 6 states. [2025-02-17 22:45:33,237 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 22:45:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2025-02-17 22:45:33,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:33,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:33,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:45:33,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:33,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 2 letters. Loop has 8 letters. [2025-02-17 22:45:33,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:33,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 217 transitions. [2025-02-17 22:45:33,254 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-02-17 22:45:33,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 57 states and 119 transitions. [2025-02-17 22:45:33,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2025-02-17 22:45:33,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2025-02-17 22:45:33,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 119 transitions. [2025-02-17 22:45:33,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:33,262 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 119 transitions. [2025-02-17 22:45:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 119 transitions. [2025-02-17 22:45:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2025-02-17 22:45:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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 22:45:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 101 transitions. [2025-02-17 22:45:33,277 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 101 transitions. [2025-02-17 22:45:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:33,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:45:33,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:45:33,279 INFO L87 Difference]: Start difference. First operand 48 states and 101 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:33,286 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2025-02-17 22:45:33,287 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 88 transitions. [2025-02-17 22:45:33,288 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-02-17 22:45:33,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 39 states and 70 transitions. [2025-02-17 22:45:33,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2025-02-17 22:45:33,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2025-02-17 22:45:33,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 70 transitions. [2025-02-17 22:45:33,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:33,288 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39 states and 70 transitions. [2025-02-17 22:45:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 70 transitions. [2025-02-17 22:45:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2025-02-17 22:45:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 35 states have internal predecessors, (64), 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 22:45:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 64 transitions. [2025-02-17 22:45:33,290 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 64 transitions. [2025-02-17 22:45:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:45:33,291 INFO L432 stractBuchiCegarLoop]: Abstraction has 36 states and 64 transitions. [2025-02-17 22:45:33,291 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:33,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 64 transitions. [2025-02-17 22:45:33,292 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-02-17 22:45:33,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:33,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:33,292 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:33,292 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:33,292 INFO L752 eck$LassoCheckResult]: Stem: "[39] $Ultimate##0-->L12: Formula: (and (= v_f2_4 0) (= v_f1_3 0) (= v_x1_5 0) (= v_x2_5 0)) InVars {x1=v_x1_5, f2=v_f2_4, x2=v_x2_5, f1=v_f1_3} OutVars{x1=v_x1_5, f2=v_f2_4, x2=v_x2_5, f1=v_f1_3} AuxVars[] AssignedVars[]" "[57] L12-->L25-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[60] L12-1-->L36: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:33,292 INFO L754 eck$LassoCheckResult]: Loop: "[51] L36-->L38: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[53] L38-->L38-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[54] L38-1-->L36: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" [2025-02-17 22:45:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 69097, now seen corresponding path program 1 times [2025-02-17 22:45:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245835215] [2025-02-17 22:45:33,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:33,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:33,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:33,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:33,296 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:33,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:33,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:33,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:33,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:33,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 80499, now seen corresponding path program 1 times [2025-02-17 22:45:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095260193] [2025-02-17 22:45:33,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:33,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:33,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:33,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:33,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:33,305 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:33,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:33,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:33,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:33,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:33,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2058519435, now seen corresponding path program 1 times [2025-02-17 22:45:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:33,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990048456] [2025-02-17 22:45:33,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:33,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:33,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:45:33,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:45:33,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:33,334 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 22:45:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990048456] [2025-02-17 22:45:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990048456] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:33,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:33,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:45:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3059070] [2025-02-17 22:45:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:33,353 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:33,353 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:33,353 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:33,353 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:33,353 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:33,353 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:33,353 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:33,353 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:33,353 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved2-buggy.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:33,353 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:33,353 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:33,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:33,358 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:33,382 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:33,382 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:33,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:33,384 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 22:45:33,386 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 22:45:33,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:33,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:33,402 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 22:45:33,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:33,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:33,404 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 22:45:33,405 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 22:45:33,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:33,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:33,428 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:33,431 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 22:45:33,431 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:33,431 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:33,431 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:33,432 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:33,432 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:33,432 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:33,432 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:33,432 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:33,432 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved2-buggy.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:33,432 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:33,432 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:33,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:33,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:33,471 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:33,471 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:33,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:33,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:33,473 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 22:45:33,474 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 22:45:33,476 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 22:45:33,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:33,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:33,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:33,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:33,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:33,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:33,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:33,488 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:33,491 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:33,491 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:33,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:33,494 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 22:45:33,496 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 22:45:33,497 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:33,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:33,497 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:33,497 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f2) = 1*f2 Supporting invariants [] [2025-02-17 22:45:33,503 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 22:45:33,503 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:33,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:33,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:33,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:33,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:33,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:33,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:33,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:33,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:33,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:33,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:33,537 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:33,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:33,555 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 22:45:33,555 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 22:45:33,555 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 64 transitions. cyclomatic complexity: 37 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:33,570 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 64 transitions. cyclomatic complexity: 37. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 94 states and 171 transitions. Complement of second has 5 states. [2025-02-17 22:45:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2025-02-17 22:45:33,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:45:33,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:33,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:45:33,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:33,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:45:33,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:33,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 171 transitions. [2025-02-17 22:45:33,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-17 22:45:33,576 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 36 states and 65 transitions. [2025-02-17 22:45:33,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2025-02-17 22:45:33,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2025-02-17 22:45:33,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 65 transitions. [2025-02-17 22:45:33,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:33,578 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 65 transitions. [2025-02-17 22:45:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 65 transitions. [2025-02-17 22:45:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2025-02-17 22:45:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 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 22:45:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2025-02-17 22:45:33,580 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 60 transitions. [2025-02-17 22:45:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:33,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:45:33,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:45:33,580 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:33,587 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2025-02-17 22:45:33,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 34 transitions. [2025-02-17 22:45:33,587 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:33,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2025-02-17 22:45:33,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:33,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:33,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:33,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:33,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:33,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:45:33,590 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:33,590 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:33,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:33,590 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:33,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:33,597 INFO L201 PluginConnector]: Adding new model interleaved2-buggy.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:33 BoogieIcfgContainer [2025-02-17 22:45:33,597 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:33,598 INFO L158 Benchmark]: Toolchain (without parser) took 1563.28ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:33,598 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.70ms. Allocated memory is still 159.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:33,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.97ms. Allocated memory is still 159.4MB. Free memory was 87.7MB in the beginning and 86.4MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-02-17 22:45:33,598 INFO L158 Benchmark]: Boogie Preprocessor took 11.38ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 85.7MB in the end (delta: 607.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:33,599 INFO L158 Benchmark]: RCFGBuilder took 166.50ms. Allocated memory is still 159.4MB. Free memory was 85.7MB in the beginning and 76.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:33,599 INFO L158 Benchmark]: BuchiAutomizer took 1359.61ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 76.8MB in the beginning and 85.6MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:33,603 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 0.70ms. Allocated memory is still 159.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.97ms. Allocated memory is still 159.4MB. Free memory was 87.7MB in the beginning and 86.4MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.38ms. Allocated memory is still 159.4MB. Free memory was 86.4MB in the beginning and 85.7MB in the end (delta: 607.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 166.50ms. Allocated memory is still 159.4MB. Free memory was 85.7MB in the beginning and 76.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1359.61ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 76.8MB in the beginning and 85.6MB in the end (delta: -8.8MB). 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function f2 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 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, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 35 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s 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 22:45:33,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:33,817 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...