/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/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/me0.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:56:45,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:56:45,554 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:56:45,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:56:45,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:56:45,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:56:45,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:56:45,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:56:45,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:56:45,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:56:45,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:56:45,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:56:45,584 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:56:45,584 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:56:45,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:56:45,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:56:45,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:45,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:56:45,586 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:56:45,587 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:56:45,587 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:56:45,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:56:45,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:56:45,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:56:45,807 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:56:45,807 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:56:45,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/me0.c.bpl [2025-04-26 16:56:45,809 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/me0.c.bpl' [2025-04-26 16:56:45,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:56:45,829 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:56:45,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:45,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:56:45,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:56:45,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,870 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:56:45,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:45,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:56:45,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:56:45,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:56:45,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:56:45,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:56:45,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:56:45,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:56:45,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/1) ... [2025-04-26 16:56:45,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:45,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:45,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:45,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:56:45,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:56:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:56:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:56:45,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:56:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:56:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:56:45,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:56:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:56:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:56:45,950 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 16:56:45,986 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:56:45,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:56:46,055 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:56:46,055 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:56:46,065 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:56:46,066 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:56:46,066 INFO L201 PluginConnector]: Adding new model me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:46 BoogieIcfgContainer [2025-04-26 16:56:46,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:56:46,067 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:56:46,067 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:56:46,072 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:56:46,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:46,073 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:45" (1/2) ... [2025-04-26 16:56:46,076 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55b90972 and model type me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:56:46, skipping insertion in model container [2025-04-26 16:56:46,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:46,076 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:46" (2/2) ... [2025-04-26 16:56:46,077 INFO L376 chiAutomizerObserver]: Analyzing ICFG me0.c.bpl [2025-04-26 16:56:46,118 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:56:46,163 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:56:46,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:56:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:46,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:56:46,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 20 transitions, 54 flow [2025-04-26 16:56:46,228 INFO L116 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-04-26 16:56:46,234 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:56:46,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2025-04-26 16:56:46,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 20 transitions, 54 flow [2025-04-26 16:56:46,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2025-04-26 16:56:46,240 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 21 places, 16 transitions, 44 flow [2025-04-26 16:56:46,247 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:56:46,343 WARN L140 AmpleReduction]: Number of pruned transitions: 14 [2025-04-26 16:56:46,344 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:56:46,345 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 3 [2025-04-26 16:56:46,345 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:21 [2025-04-26 16:56:46,345 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:13 [2025-04-26 16:56:46,345 WARN L145 AmpleReduction]: Times succ was already a loop node:11 [2025-04-26 16:56:46,345 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 16:56:46,345 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:56:46,347 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 38 states, 37 states have (on average 1.5945945945945945) internal successors, (in total 59), 37 states have internal predecessors, (59), 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 16:56:46,351 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:56:46,352 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:56:46,352 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:56:46,352 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:56:46,352 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:56:46,352 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:56:46,352 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:56:46,352 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:56:46,354 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 states, 37 states have (on average 1.5945945945945945) internal successors, (in total 59), 37 states have internal predecessors, (59), 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 16:56:46,363 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 18 [2025-04-26 16:56:46,364 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:46,364 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:46,366 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:56:46,366 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:46,366 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:56:46,367 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 states, 37 states have (on average 1.5945945945945945) internal successors, (in total 59), 37 states have internal predecessors, (59), 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 16:56:46,368 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 18 [2025-04-26 16:56:46,368 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:46,368 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:46,368 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:56:46,368 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:46,371 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L10: Formula: (= v_f_4 0) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[51] L10-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:56:46,372 INFO L754 eck$LassoCheckResult]: Loop: "[40] L19-->L21: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[42] L21-->L19: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:56:46,374 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2004, now seen corresponding path program 1 times [2025-04-26 16:56:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:46,379 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725759063] [2025-04-26 16:56:46,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:46,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:46,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,423 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:46,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:46,438 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 1 times [2025-04-26 16:56:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:46,438 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453309926] [2025-04-26 16:56:46,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:46,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,445 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:46,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:46,454 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1927126, now seen corresponding path program 1 times [2025-04-26 16:56:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:46,455 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374495378] [2025-04-26 16:56:46,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:46,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:46,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:56:46,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:56:46,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,467 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:46,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:56:46,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:56:46,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:46,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:46,520 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:46,521 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:46,521 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:46,521 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:46,521 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:46,522 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,522 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:46,522 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:46,522 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:46,522 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:46,522 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:46,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:46,588 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:46,589 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,597 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 16:56:46,609 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 16:56:46,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:46,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:46,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:56:46,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,645 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 16:56:46,657 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 16:56:46,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:46,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:46,741 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:46,745 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 16:56:46,746 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:46,746 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:46,746 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:46,746 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:46,746 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:46,746 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,746 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:46,746 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:46,746 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:46,746 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:46,746 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:46,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:46,773 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:46,776 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,779 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 16:56:46,805 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 16:56:46,806 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 16:56:46,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:46,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:46,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:46,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:46,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:46,822 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:46,823 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:46,829 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:46,835 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:56:46,835 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:56:46,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:46,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:46,861 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 16:56:46,862 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 16:56:46,863 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:46,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:56:46,867 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:46,868 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:46,868 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:56:46,874 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 16:56:46,879 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:46,913 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:46,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:46,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:46,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:46,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:46,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:46,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:46,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:46,952 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:46,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:46,994 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 16:56:47,013 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 16:56:47,015 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 38 states, 37 states have (on average 1.5945945945945945) internal successors, (in total 59), 37 states have internal predecessors, (59), 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) 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 16:56:47,101 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 38 states, 37 states have (on average 1.5945945945945945) internal successors, (in total 59), 37 states have internal predecessors, (59), 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). 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 118 states and 202 transitions. Complement of second has 7 states. [2025-04-26 16:56:47,102 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 16:56:47,105 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 16:56:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2025-04-26 16:56:47,109 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:56:47,110 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,110 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:56:47,110 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,110 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:56:47,110 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 202 transitions. [2025-04-26 16:56:47,117 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-04-26 16:56:47,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 59 states and 109 transitions. [2025-04-26 16:56:47,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2025-04-26 16:56:47,125 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2025-04-26 16:56:47,125 INFO L74 IsDeterministic]: Start isDeterministic. Operand 59 states and 109 transitions. [2025-04-26 16:56:47,126 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:47,126 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 109 transitions. [2025-04-26 16:56:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 109 transitions. [2025-04-26 16:56:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 43. [2025-04-26 16:56:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (in total 84), 42 states have internal predecessors, (84), 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 16:56:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 84 transitions. [2025-04-26 16:56:47,147 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 84 transitions. [2025-04-26 16:56:47,147 INFO L438 stractBuchiCegarLoop]: Abstraction has 43 states and 84 transitions. [2025-04-26 16:56:47,147 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:56:47,147 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 84 transitions. [2025-04-26 16:56:47,150 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-04-26 16:56:47,150 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:47,150 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:47,150 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:56:47,150 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:47,153 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L10: Formula: (= v_f_4 0) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[51] L10-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[54] L10-1-->$Ultimate##0: 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]" "[39] L19-->L23: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[41] L23-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[44] $Ultimate##0-->L30-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 16:56:47,153 INFO L754 eck$LassoCheckResult]: Loop: "[46] L30-1-->L32: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[48] L32-->L30-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-04-26 16:56:47,153 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1852383592, now seen corresponding path program 1 times [2025-04-26 16:56:47,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,153 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758324379] [2025-04-26 16:56:47,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:47,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:56:47,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:56:47,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,159 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:56:47,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:56:47,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,164 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2435, now seen corresponding path program 1 times [2025-04-26 16:56:47,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,164 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807065203] [2025-04-26 16:56:47,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,167 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,169 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2024172842, now seen corresponding path program 1 times [2025-04-26 16:56:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,169 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456746200] [2025-04-26 16:56:47,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:56:47,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:56:47,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,173 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:56:47,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:56:47,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,188 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:47,188 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:47,188 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:47,188 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:47,188 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:47,188 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,188 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:47,188 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:47,188 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:56:47,189 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:47,189 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:47,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:47,208 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:47,209 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:47,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,213 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 16:56:47,215 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 16:56:47,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:47,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:47,232 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 16:56:47,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,234 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 16:56:47,235 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 16:56:47,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:47,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:47,308 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:47,313 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 16:56:47,313 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:47,314 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:47,314 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:47,314 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:47,314 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:47,314 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,314 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:47,314 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:47,314 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:56:47,314 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:47,314 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:47,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:47,339 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:47,340 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,342 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 16:56:47,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:56:47,346 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 16:56:47,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:47,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:47,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:47,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:47,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:47,357 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:47,357 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:47,359 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:47,361 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:56:47,361 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:56:47,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,363 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 16:56:47,364 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 16:56:47,365 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:47,368 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 16:56:47,368 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:47,369 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:47,369 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, x1) = -1*y + 1*x1 Supporting invariants [] [2025-04-26 16:56:47,374 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 16:56:47,375 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:47,390 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:56:47,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:56:47,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,414 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,430 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 16:56:47,431 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 16:56:47,431 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 84 transitions. cyclomatic complexity: 51 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 16:56:47,482 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 84 transitions. cyclomatic complexity: 51. 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 97 states and 172 transitions. Complement of second has 7 states. [2025-04-26 16:56:47,485 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 16:56:47,486 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 16:56:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2025-04-26 16:56:47,486 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:56:47,486 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,486 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 16:56:47,487 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,487 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:56:47,487 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 172 transitions. [2025-04-26 16:56:47,490 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-04-26 16:56:47,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 60 states and 113 transitions. [2025-04-26 16:56:47,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2025-04-26 16:56:47,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2025-04-26 16:56:47,491 INFO L74 IsDeterministic]: Start isDeterministic. Operand 60 states and 113 transitions. [2025-04-26 16:56:47,491 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:47,491 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 113 transitions. [2025-04-26 16:56:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 113 transitions. [2025-04-26 16:56:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2025-04-26 16:56:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 2.0) internal successors, (in total 92), 45 states have internal predecessors, (92), 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 16:56:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 92 transitions. [2025-04-26 16:56:47,495 INFO L240 hiAutomatonCegarLoop]: Abstraction has 46 states and 92 transitions. [2025-04-26 16:56:47,495 INFO L438 stractBuchiCegarLoop]: Abstraction has 46 states and 92 transitions. [2025-04-26 16:56:47,495 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:56:47,495 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 92 transitions. [2025-04-26 16:56:47,496 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-04-26 16:56:47,496 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:47,496 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:47,496 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:56:47,496 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:47,496 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L10: Formula: (= v_f_4 0) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[51] L10-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[54] L10-1-->$Ultimate##0: 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]" "[44] $Ultimate##0-->L30-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[46] L30-1-->L32: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[48] L32-->L30-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" "[45] L30-1-->thread2FINAL: Formula: (<= v_x1_8 v_y_2) InVars {y=v_y_2, x1=v_x1_8} OutVars{y=v_y_2, x1=v_x1_8} AuxVars[] AssignedVars[]" [2025-04-26 16:56:47,496 INFO L754 eck$LassoCheckResult]: Loop: "[40] L19-->L21: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[42] L21-->L19: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:56:47,497 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1589470433, now seen corresponding path program 1 times [2025-04-26 16:56:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,497 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799503657] [2025-04-26 16:56:47,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:56:47,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:56:47,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-26 16:56:47,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:56:47,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799503657] [2025-04-26 16:56:47,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799503657] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:56:47,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:56:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:56:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614716341] [2025-04-26 16:56:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:56:47,548 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:56:47,548 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 2 times [2025-04-26 16:56:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:47,548 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155374083] [2025-04-26 16:56:47,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 16:56:47,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:47,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,556 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 16:56:47,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,557 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:47,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:47,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:47,571 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:47,572 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:47,572 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:47,572 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:47,572 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:47,572 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,572 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:47,572 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:47,572 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:56:47,572 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:47,572 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:47,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:47,595 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:47,595 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:47,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,597 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 16:56:47,598 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 16:56:47,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:47,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:47,615 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 16:56:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,617 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 16:56:47,617 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 16:56:47,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:47,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:47,688 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:47,692 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 16:56:47,692 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:47,693 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:47,693 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:47,693 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:47,693 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:47,693 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,693 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:47,693 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:47,693 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:56:47,693 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:47,693 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:47,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:47,712 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:47,712 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:47,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,715 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 16:56:47,716 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 16:56:47,718 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 16:56:47,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:47,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:47,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:47,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:47,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:47,729 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:47,729 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:47,731 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:47,733 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:56:47,733 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:56:47,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:47,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:47,735 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:47,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:56:47,738 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:47,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:47,741 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:47,741 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:47,741 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:56:47,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:47,748 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:47,758 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:47,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:56:47,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:56:47,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:47,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:47,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:47,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:47,785 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:47,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:47,799 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 16:56:47,800 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 16:56:47,800 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 92 transitions. cyclomatic complexity: 58 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 states have internal predecessors, (9), 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 16:56:47,823 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 92 transitions. cyclomatic complexity: 58. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 states have internal predecessors, (9), 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 57 states and 108 transitions. Complement of second has 6 states. [2025-04-26 16:56:47,824 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 16:56:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 states have internal predecessors, (9), 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 16:56:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2025-04-26 16:56:47,824 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:56:47,825 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,825 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 2 letters. [2025-04-26 16:56:47,825 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,825 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 16:56:47,825 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:47,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 108 transitions. [2025-04-26 16:56:47,826 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 10 [2025-04-26 16:56:47,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 42 states and 82 transitions. [2025-04-26 16:56:47,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2025-04-26 16:56:47,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2025-04-26 16:56:47,827 INFO L74 IsDeterministic]: Start isDeterministic. Operand 42 states and 82 transitions. [2025-04-26 16:56:47,827 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:47,827 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 82 transitions. [2025-04-26 16:56:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 82 transitions. [2025-04-26 16:56:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-04-26 16:56:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.9523809523809523) internal successors, (in total 82), 41 states have internal predecessors, (82), 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 16:56:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 82 transitions. [2025-04-26 16:56:47,830 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 82 transitions. [2025-04-26 16:56:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:56:47,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:56:47,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:56:47,832 INFO L87 Difference]: Start difference. First operand 42 states and 82 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:56:47,839 INFO L93 Difference]: Finished difference Result 11 states and 18 transitions. [2025-04-26 16:56:47,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 18 transitions. [2025-04-26 16:56:47,840 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:47,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2025-04-26 16:56:47,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:56:47,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:56:47,840 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:56:47,841 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:56:47,841 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:47,841 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:47,843 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:56:47,844 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:47,844 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:56:47,844 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:56:47,844 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:47,844 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:56:47,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:56:47,857 INFO L201 PluginConnector]: Adding new model me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:56:47 BoogieIcfgContainer [2025-04-26 16:56:47,857 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:56:47,858 INFO L158 Benchmark]: Toolchain (without parser) took 2028.33ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 84.4MB in the beginning and 60.0MB in the end (delta: 24.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:56:47,858 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:47,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.73ms. Allocated memory is still 155.2MB. Free memory was 84.3MB in the beginning and 82.5MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:56:47,858 INFO L158 Benchmark]: Boogie Preprocessor took 24.16ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 81.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:47,858 INFO L158 Benchmark]: RCFGBuilder took 168.93ms. Allocated memory is still 155.2MB. Free memory was 81.5MB in the beginning and 73.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:56:47,859 INFO L158 Benchmark]: BuchiAutomizer took 1790.22ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 72.8MB in the beginning and 60.0MB in the end (delta: 12.8MB). Peak memory consumption was 23.5kB. Max. memory is 8.0GB. [2025-04-26 16:56:47,860 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 0.22ms. Allocated memory is still 155.2MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.73ms. Allocated memory is still 155.2MB. Free memory was 84.3MB in the beginning and 82.5MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.16ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 81.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 168.93ms. Allocated memory is still 155.2MB. Free memory was 81.5MB in the beginning and 73.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1790.22ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 72.8MB in the beginning and 60.0MB in the end (delta: 12.8MB). Peak memory consumption was 23.5kB. 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 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 32 mSDtfsCounter, 71 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: 90ms 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: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 186, Number of transitions in reduction automaton: 59, Number of states in reduction automaton: 38, Underlying: - 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 + z and consists of 4 locations. One deterministic module has affine ranking function x1 + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * x1 + z 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 16:56:47,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...