/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/3_thr/me1-3.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:39,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:39,710 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:39,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:39,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:39,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:39,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:39,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:39,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:39,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:39,735 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:39,735 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:39,735 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:39,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:39,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:39,737 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:39,737 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:39,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:39,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:39,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:39,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:39,737 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:39,737 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:39,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:39,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:39,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:39,972 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:39,973 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:39,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/me1-3.c.bpl [2025-04-26 16:24:39,974 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/me1-3.c.bpl' [2025-04-26 16:24:39,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:39,988 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:39,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:39,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:39,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:39,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,023 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:40,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:40,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:40,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:40,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:40,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,037 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:40,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:40,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:40,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:40,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/1) ... [2025-04-26 16:24:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:24:40,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:40,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:40,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:40,092 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:40,092 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:40,128 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:40,130 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:40,184 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:40,184 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:40,191 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:40,191 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:40,191 INFO L201 PluginConnector]: Adding new model me1-3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:40 BoogieIcfgContainer [2025-04-26 16:24:40,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:40,192 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:40,192 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:40,196 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:40,196 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:40,197 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:39" (1/2) ... [2025-04-26 16:24:40,197 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9604b97 and model type me1-3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:40, skipping insertion in model container [2025-04-26 16:24:40,198 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:40,198 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me1-3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:40" (2/2) ... [2025-04-26 16:24:40,198 INFO L376 chiAutomizerObserver]: Analyzing ICFG me1-3.c.bpl [2025-04-26 16:24:40,235 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:24:40,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 77 flow [2025-04-26 16:24:40,292 INFO L116 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-04-26 16:24:40,294 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:24:40,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-04-26 16:24:40,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 28 transitions, 77 flow [2025-04-26 16:24:40,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 62 flow [2025-04-26 16:24:40,300 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 29 places, 22 transitions, 62 flow [2025-04-26 16:24:40,308 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:40,309 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:40,309 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:40,309 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:40,309 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:40,309 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:40,309 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:40,309 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:40,310 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:40,359 INFO L131 ngComponentsAnalysis]: Automaton has 45 accepting balls. 116 [2025-04-26 16:24:40,360 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:40,360 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:40,363 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:40,363 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:40,363 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:40,363 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 157 states, but on-demand construction may add more states [2025-04-26 16:24:40,368 INFO L131 ngComponentsAnalysis]: Automaton has 45 accepting balls. 116 [2025-04-26 16:24:40,368 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:40,368 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:40,368 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:40,368 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:40,373 INFO L752 eck$LassoCheckResult]: Stem: "[49] $Ultimate##0-->L16: Formula: (and (= v_g_4 0) (= v_f_1 0)) InVars {g=v_g_4, f=v_f_1} OutVars{g=v_g_4, f=v_f_1} AuxVars[] AssignedVars[]" "[70] L16-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:40,374 INFO L754 eck$LassoCheckResult]: Loop: "[55] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[57] L29-->L27: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:40,377 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2550, now seen corresponding path program 1 times [2025-04-26 16:24:40,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,382 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424182124] [2025-04-26 16:24:40,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,429 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,446 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2723, now seen corresponding path program 1 times [2025-04-26 16:24:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,446 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523452337] [2025-04-26 16:24:40,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,456 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,462 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2452312, now seen corresponding path program 1 times [2025-04-26 16:24:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:40,463 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486316676] [2025-04-26 16:24:40,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:40,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,471 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:40,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:40,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:40,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:40,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:40,525 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,527 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,527 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,527 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,528 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:40,528 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,528 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,528 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,528 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:40,528 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,529 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,579 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,579 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:40,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:24:40,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:40,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:24:40,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:40,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:40,722 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:40,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:40,728 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:40,728 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:40,728 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:40,728 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:40,728 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:40,728 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,728 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:40,728 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:40,729 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:40,729 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:40,729 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:40,731 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:40,758 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:40,761 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:40,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:24:40,767 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:40,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:40,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:40,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:40,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:40,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:40,782 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:40,783 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:40,785 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:40,790 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:40,790 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:40,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:40,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:40,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:24:40,795 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:40,798 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:40,799 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 [2025-04-26 16:24:40,800 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:40,800 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:40,800 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:24:40,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:40,809 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:40,831 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:40,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:40,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:40,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:40,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:40,857 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:40,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:40,955 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:40,957 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 157 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,067 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 157 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 434 states and 1397 transitions. Complement of second has 6 states. [2025-04-26 16:24:41,068 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2025-04-26 16:24:41,076 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 48 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:41,076 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,076 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 48 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:41,076 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,076 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 48 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:41,076 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 434 states and 1397 transitions. [2025-04-26 16:24:41,086 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 90 [2025-04-26 16:24:41,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 434 states to 270 states and 873 transitions. [2025-04-26 16:24:41,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2025-04-26 16:24:41,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 196 [2025-04-26 16:24:41,094 INFO L74 IsDeterministic]: Start isDeterministic. Operand 270 states and 873 transitions. [2025-04-26 16:24:41,095 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:41,095 INFO L218 hiAutomatonCegarLoop]: Abstraction has 270 states and 873 transitions. [2025-04-26 16:24:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 873 transitions. [2025-04-26 16:24:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 198. [2025-04-26 16:24:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 198 states have (on average 3.3181818181818183) internal successors, (in total 657), 197 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 657 transitions. [2025-04-26 16:24:41,121 INFO L240 hiAutomatonCegarLoop]: Abstraction has 198 states and 657 transitions. [2025-04-26 16:24:41,121 INFO L438 stractBuchiCegarLoop]: Abstraction has 198 states and 657 transitions. [2025-04-26 16:24:41,122 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:41,122 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 657 transitions. [2025-04-26 16:24:41,124 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 90 [2025-04-26 16:24:41,124 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:41,124 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:41,124 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:41,125 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:41,125 INFO L752 eck$LassoCheckResult]: Stem: "[49] $Ultimate##0-->L16: Formula: (and (= v_g_4 0) (= v_f_1 0)) InVars {g=v_g_4, f=v_f_1} OutVars{g=v_g_4, f=v_f_1} AuxVars[] AssignedVars[]" "[70] L16-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[73] L16-1-->L36: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:24:41,125 INFO L754 eck$LassoCheckResult]: Loop: "[59] L36-->L38: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[61] L38-->L36: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 16:24:41,125 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 79123, now seen corresponding path program 1 times [2025-04-26 16:24:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:41,126 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30057182] [2025-04-26 16:24:41,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:41,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:41,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:41,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,129 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:41,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:41,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:41,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:41,132 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2851, now seen corresponding path program 1 times [2025-04-26 16:24:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:41,132 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421189139] [2025-04-26 16:24:41,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:41,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,135 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:41,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:41,137 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 76039093, now seen corresponding path program 1 times [2025-04-26 16:24:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:41,137 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635460188] [2025-04-26 16:24:41,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:41,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:41,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:41,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:41,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,141 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:41,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:41,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:41,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:41,160 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:41,160 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:41,160 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:41,160 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:41,160 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:41,160 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,160 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:41,160 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:41,160 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:41,160 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:41,160 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:41,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:41,185 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:41,185 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:41,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:24:41,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:41,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:41,206 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 [2025-04-26 16:24:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:24:41,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:41,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:41,275 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:41,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:24:41,279 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:41,280 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:41,280 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:41,280 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:41,280 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:41,280 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,280 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:41,280 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:41,280 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:41,280 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:41,280 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:41,281 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:41,315 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:41,315 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:41,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:24:41,319 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:41,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:41,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:41,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:41,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:41,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:41,331 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:41,331 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:41,333 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:41,336 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:41,336 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:24:41,341 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:41,344 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:41,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:24:41,345 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:41,345 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:41,345 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:24:41,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:24:41,351 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:41,363 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:41,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:41,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:41,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:41,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,377 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:41,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:41,392 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:41,393 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 198 states and 657 transitions. cyclomatic complexity: 514 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,469 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 198 states and 657 transitions. cyclomatic complexity: 514. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 700 states and 2337 transitions. Complement of second has 7 states. [2025-04-26 16:24:41,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2025-04-26 16:24:41,471 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:24:41,471 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,471 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:24:41,471 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,471 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:24:41,471 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 700 states and 2337 transitions. [2025-04-26 16:24:41,488 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 72 [2025-04-26 16:24:41,499 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 700 states to 456 states and 1538 transitions. [2025-04-26 16:24:41,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2025-04-26 16:24:41,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 266 [2025-04-26 16:24:41,501 INFO L74 IsDeterministic]: Start isDeterministic. Operand 456 states and 1538 transitions. [2025-04-26 16:24:41,501 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:41,501 INFO L218 hiAutomatonCegarLoop]: Abstraction has 456 states and 1538 transitions. [2025-04-26 16:24:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states and 1538 transitions. [2025-04-26 16:24:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 345. [2025-04-26 16:24:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 345 states have (on average 3.5130434782608697) internal successors, (in total 1212), 344 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1212 transitions. [2025-04-26 16:24:41,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 345 states and 1212 transitions. [2025-04-26 16:24:41,520 INFO L438 stractBuchiCegarLoop]: Abstraction has 345 states and 1212 transitions. [2025-04-26 16:24:41,520 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:41,520 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 345 states and 1212 transitions. [2025-04-26 16:24:41,522 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 72 [2025-04-26 16:24:41,522 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:41,522 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:41,523 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:24:41,523 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:41,523 INFO L752 eck$LassoCheckResult]: Stem: "[49] $Ultimate##0-->L16: Formula: (and (= v_g_4 0) (= v_f_1 0)) InVars {g=v_g_4, f=v_f_1} OutVars{g=v_g_4, f=v_f_1} AuxVars[] AssignedVars[]" "[70] L16-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[73] L16-1-->L36: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[58] L36-->L40: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[76] L17-->$Ultimate##0: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[63] $Ultimate##0-->L47-1: Formula: (< 0 v_g_3) InVars {g=v_g_3} OutVars{g=v_g_3} AuxVars[] AssignedVars[]" [2025-04-26 16:24:41,523 INFO L754 eck$LassoCheckResult]: Loop: "[65] L47-1-->L49: Formula: (< v_y2_1 v_x2_5) InVars {y2=v_y2_1, x2=v_x2_5} OutVars{y2=v_y2_1, x2=v_x2_5} AuxVars[] AssignedVars[]" "[67] L49-->L47-1: Formula: (= v_x2_7 (+ v_x2_6 1)) InVars {x2=v_x2_7} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[x2]" [2025-04-26 16:24:41,524 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1937755846, now seen corresponding path program 1 times [2025-04-26 16:24:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:41,524 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956474159] [2025-04-26 16:24:41,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:41,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:41,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:41,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:41,556 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956474159] [2025-04-26 16:24:41,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956474159] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:41,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:24:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10025053] [2025-04-26 16:24:41,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:41,560 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:24:41,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 3043, now seen corresponding path program 1 times [2025-04-26 16:24:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:41,560 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592099330] [2025-04-26 16:24:41,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:41,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:41,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,563 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:41,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:41,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:41,576 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:41,576 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:41,576 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:41,576 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:41,576 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:41,576 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,576 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:41,576 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:41,577 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:41,577 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:41,577 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:41,577 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:41,590 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:41,590 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:41,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,593 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:24:41,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:41,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:41,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:24:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:24:41,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:41,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:41,683 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:41,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:24:41,687 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:41,687 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:41,687 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:41,687 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:41,687 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:41,687 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,687 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:41,687 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:41,687 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:41,687 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:41,687 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:41,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:41,708 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:41,708 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:41,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,711 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:24:41,713 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:41,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:41,722 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:41,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:41,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:41,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:41,725 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:41,725 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:41,727 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:41,730 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:41,730 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:41,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:41,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:41,732 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:41,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:24:41,735 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:41,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:24:41,740 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:41,741 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:41,741 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, x2) = -1*y2 + 1*x2 Supporting invariants [] [2025-04-26 16:24:41,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:24:41,747 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:41,767 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:41,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:41,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:41,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:41,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:41,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:41,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:41,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:41,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:41,788 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:41,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:41,803 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:41,803 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 345 states and 1212 transitions. cyclomatic complexity: 942 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,850 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 345 states and 1212 transitions. cyclomatic complexity: 942. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 954 states and 3133 transitions. Complement of second has 7 states. [2025-04-26 16:24:41,851 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-04-26 16:24:41,852 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:41,852 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,852 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 16:24:41,852 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,852 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:24:41,852 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:41,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 954 states and 3133 transitions. [2025-04-26 16:24:41,860 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 72 [2025-04-26 16:24:41,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 954 states to 567 states and 1854 transitions. [2025-04-26 16:24:41,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 229 [2025-04-26 16:24:41,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 263 [2025-04-26 16:24:41,866 INFO L74 IsDeterministic]: Start isDeterministic. Operand 567 states and 1854 transitions. [2025-04-26 16:24:41,867 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:41,867 INFO L218 hiAutomatonCegarLoop]: Abstraction has 567 states and 1854 transitions. [2025-04-26 16:24:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states and 1854 transitions. [2025-04-26 16:24:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 390. [2025-04-26 16:24:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 390 states have (on average 3.4846153846153847) internal successors, (in total 1359), 389 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1359 transitions. [2025-04-26 16:24:41,880 INFO L240 hiAutomatonCegarLoop]: Abstraction has 390 states and 1359 transitions. [2025-04-26 16:24:41,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:41,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:41,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:41,882 INFO L87 Difference]: Start difference. First operand 390 states and 1359 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (in total 6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:41,889 INFO L93 Difference]: Finished difference Result 93 states and 269 transitions. [2025-04-26 16:24:41,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 269 transitions. [2025-04-26 16:24:41,890 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:41,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 0 states and 0 transitions. [2025-04-26 16:24:41,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:41,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:41,890 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:41,890 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:41,890 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,890 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,891 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:41,891 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:41,891 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:41,891 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:41,891 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:41,892 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:41,896 INFO L201 PluginConnector]: Adding new model me1-3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:41 BoogieIcfgContainer [2025-04-26 16:24:41,896 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:41,896 INFO L158 Benchmark]: Toolchain (without parser) took 1909.15ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 91.3MB in the beginning and 31.1MB in the end (delta: 60.2MB). Peak memory consumption was 46.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,897 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.92ms. Allocated memory is still 163.6MB. Free memory was 91.3MB in the beginning and 89.5MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,897 INFO L158 Benchmark]: Boogie Preprocessor took 22.97ms. Allocated memory is still 163.6MB. Free memory was 89.5MB in the beginning and 88.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:41,897 INFO L158 Benchmark]: RCFGBuilder took 141.67ms. Allocated memory is still 163.6MB. Free memory was 88.4MB in the beginning and 79.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,898 INFO L158 Benchmark]: BuchiAutomizer took 1703.79ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 79.4MB in the beginning and 31.1MB in the end (delta: 48.2MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2025-04-26 16:24:41,898 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 163.6MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.92ms. Allocated memory is still 163.6MB. Free memory was 91.3MB in the beginning and 89.5MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.97ms. Allocated memory is still 163.6MB. Free memory was 89.5MB in the beginning and 88.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 141.67ms. Allocated memory is still 163.6MB. Free memory was 88.4MB in the beginning and 79.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1703.79ms. Allocated memory was 163.6MB in the beginning and 142.6MB in the end (delta: -21.0MB). Free memory was 79.4MB in the beginning and 31.1MB in the end (delta: 48.2MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 360 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 73 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + x2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:41,909 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...