/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/4_plus_thr/pc4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:44:08,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:44:08,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:44:08,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:44:08,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:44:08,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:44:08,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:44:08,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:44:08,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:44:08,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:44:08,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:44:08,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:44:08,658 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:44:08,658 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:44:08,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:44:08,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:44:08,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:44:08,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:44:08,660 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:44:08,660 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:44:08,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:44:08,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:44:08,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:44:08,904 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:44:08,904 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:44:08,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl [2025-04-26 18:44:08,906 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl' [2025-04-26 18:44:08,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:44:08,923 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:44:08,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:44:08,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:44:08,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:44:08,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,955 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:44:08,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:44:08,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:44:08,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:44:08,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:44:08,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,968 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:44:08,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:44:08,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:44:08,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:44:08,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/1) ... [2025-04-26 18:44:08,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:44:09,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:09,022 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 18:44:09,027 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 18:44:09,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:44:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:44:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:44:09,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:44:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:44:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:44:09,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:44:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:44:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:44:09,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:44:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:44:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:44:09,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:44:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:44:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:44:09,050 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 18:44:09,087 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:44:09,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:44:09,179 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:44:09,180 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:44:09,188 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:44:09,189 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:44:09,189 INFO L201 PluginConnector]: Adding new model pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:44:09 BoogieIcfgContainer [2025-04-26 18:44:09,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:44:09,190 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:44:09,190 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:44:09,194 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:44:09,195 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:44:09,196 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:08" (1/2) ... [2025-04-26 18:44:09,197 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@695a00a0 and model type pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:44:09, skipping insertion in model container [2025-04-26 18:44:09,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:44:09,197 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:44:09" (2/2) ... [2025-04-26 18:44:09,198 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc4.c.bpl [2025-04-26 18:44:09,247 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 18:44:09,281 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:44:09,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:44:09,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:09,285 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 18:44:09,286 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 18:44:09,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 18:44:09,365 INFO L116 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-04-26 18:44:09,368 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 18:44:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-04-26 18:44:09,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 18:44:09,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-04-26 18:44:09,378 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 43 places, 34 transitions, 92 flow [2025-04-26 18:44:09,379 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 34 transitions, 92 flow [2025-04-26 18:44:09,524 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1816 states, 1815 states have (on average 3.9426997245179063) internal successors, (in total 7156), 1815 states have internal predecessors, (7156), 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 18:44:09,531 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 1816 states, 1815 states have (on average 3.9426997245179063) internal successors, (in total 7156), 1815 states have internal predecessors, (7156), 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 18:44:09,534 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:44:09,931 WARN L140 AmpleReduction]: Number of pruned transitions: 3656 [2025-04-26 18:44:09,931 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:44:09,932 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 431 [2025-04-26 18:44:09,932 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:28 [2025-04-26 18:44:09,932 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:1324 [2025-04-26 18:44:09,932 WARN L145 AmpleReduction]: Times succ was already a loop node:170 [2025-04-26 18:44:09,932 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:837 [2025-04-26 18:44:09,932 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:44:09,936 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 1784 states, 1783 states have (on average 1.9153112731351654) internal successors, (in total 3415), 1783 states have internal predecessors, (3415), 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 18:44:09,945 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:44:09,945 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:44:09,945 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:44:09,945 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:44:09,945 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:44:09,945 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:44:09,945 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:44:09,945 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:44:09,950 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1784 states, 1783 states have (on average 1.9153112731351654) internal successors, (in total 3415), 1783 states have internal predecessors, (3415), 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 18:44:10,004 INFO L131 ngComponentsAnalysis]: Automaton has 183 accepting balls. 1305 [2025-04-26 18:44:10,004 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:10,006 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:10,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:44:10,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:10,011 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:44:10,015 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1784 states, 1783 states have (on average 1.9153112731351654) internal successors, (in total 3415), 1783 states have internal predecessors, (3415), 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 18:44:10,080 INFO L131 ngComponentsAnalysis]: Automaton has 183 accepting balls. 1305 [2025-04-26 18:44:10,081 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:10,081 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:10,081 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:44:10,081 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:10,086 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 18:44:10,087 INFO L754 eck$LassoCheckResult]: Loop: "[83] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[85] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[87] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:10,091 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 3397, now seen corresponding path program 1 times [2025-04-26 18:44:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:10,098 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641568186] [2025-04-26 18:44:10,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:10,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:10,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:10,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:10,155 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:10,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:10,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:10,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:10,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:10,178 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 112276, now seen corresponding path program 1 times [2025-04-26 18:44:10,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:10,179 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518062188] [2025-04-26 18:44:10,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:10,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:10,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:10,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:10,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:10,196 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:10,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:10,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:10,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:10,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:10,206 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash 101282512, now seen corresponding path program 1 times [2025-04-26 18:44:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:10,206 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003254636] [2025-04-26 18:44:10,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:10,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:44:10,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:44:10,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:10,214 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:10,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:44:10,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:44:10,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:10,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:10,296 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:10,297 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:10,297 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:10,297 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:10,297 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:10,297 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,297 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:10,298 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:10,298 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:44:10,298 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:10,298 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:10,317 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:10,326 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:10,386 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:10,387 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:10,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,396 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 18:44:10,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:10,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:10,407 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 18:44:10,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:10,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,429 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 18:44:10,430 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 18:44:10,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:10,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:10,472 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:44:10,472 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 18:44:10,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:10,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,481 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 18:44:10,482 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 18:44:10,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:10,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:10,503 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 18:44:10,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,505 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 18:44:10,507 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 18:44:10,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:10,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:10,580 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:10,584 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 18:44:10,584 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:10,584 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:10,585 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:10,585 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:10,585 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:10,585 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,585 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:10,585 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:10,585 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:44:10,585 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:10,585 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:10,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:10,590 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:10,618 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:10,621 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:10,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,624 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 18:44:10,625 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 18:44:10,627 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 18:44:10,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:10,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:10,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:10,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:10,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:10,643 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:10,643 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:10,647 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:44:10,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:10,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,655 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 18:44:10,658 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 18:44:10,658 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 18:44:10,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:10,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:10,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:10,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:10,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:10,670 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:10,670 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:10,672 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:10,675 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:10,675 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:10,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:10,699 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 18:44:10,702 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 18:44:10,703 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:10,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:10,707 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:10,708 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:10,708 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 18:44:10,714 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 18:44:10,717 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:10,746 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:10,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:10,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:10,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:10,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:10,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:10,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:10,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:10,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:10,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:10,768 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:10,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:10,819 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 18:44:10,837 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:10,841 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 1784 states, 1783 states have (on average 1.9153112731351654) internal successors, (in total 3415), 1783 states have internal predecessors, (3415), 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 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:11,002 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 1784 states, 1783 states have (on average 1.9153112731351654) internal successors, (in total 3415), 1783 states have internal predecessors, (3415), 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 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 3654 states and 7090 transitions. Complement of second has 6 states. [2025-04-26 18:44:11,004 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 18:44:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-04-26 18:44:11,013 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 18:44:11,015 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:11,015 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:44:11,015 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:11,015 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 18:44:11,015 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:11,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3654 states and 7090 transitions. [2025-04-26 18:44:11,056 INFO L131 ngComponentsAnalysis]: Automaton has 98 accepting balls. 528 [2025-04-26 18:44:11,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3654 states to 2269 states and 4302 transitions. [2025-04-26 18:44:11,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1116 [2025-04-26 18:44:11,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1446 [2025-04-26 18:44:11,095 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2269 states and 4302 transitions. [2025-04-26 18:44:11,096 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:11,096 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2269 states and 4302 transitions. [2025-04-26 18:44:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states and 4302 transitions. [2025-04-26 18:44:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2104. [2025-04-26 18:44:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2104 states have (on average 1.966254752851711) internal successors, (in total 4137), 2103 states have internal predecessors, (4137), 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 18:44:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 4137 transitions. [2025-04-26 18:44:11,200 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2104 states and 4137 transitions. [2025-04-26 18:44:11,200 INFO L438 stractBuchiCegarLoop]: Abstraction has 2104 states and 4137 transitions. [2025-04-26 18:44:11,200 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:44:11,200 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2104 states and 4137 transitions. [2025-04-26 18:44:11,213 INFO L131 ngComponentsAnalysis]: Automaton has 98 accepting balls. 528 [2025-04-26 18:44:11,213 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:11,213 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:11,213 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:44:11,213 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:11,214 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[82] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[84] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[86] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" [2025-04-26 18:44:11,214 INFO L754 eck$LassoCheckResult]: Loop: "[89] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[91] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[93] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:11,214 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1155240093, now seen corresponding path program 1 times [2025-04-26 18:44:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:11,215 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481228882] [2025-04-26 18:44:11,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:11,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:11,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:11,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:11,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,222 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:11,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:11,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:11,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:11,229 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,229 INFO L85 PathProgramCache]: Analyzing trace with hash 118234, now seen corresponding path program 1 times [2025-04-26 18:44:11,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:11,229 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139058538] [2025-04-26 18:44:11,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:11,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:11,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:11,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:11,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,232 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:11,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:11,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:11,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:11,235 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash -184579272, now seen corresponding path program 1 times [2025-04-26 18:44:11,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:11,235 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063957556] [2025-04-26 18:44:11,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:11,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:44:11,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:44:11,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,241 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:11,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:44:11,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:44:11,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:11,270 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:11,270 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:11,270 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:11,270 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:11,270 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:11,270 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,270 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:11,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:11,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:44:11,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:11,270 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:11,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:11,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:11,299 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:11,300 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:11,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,302 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 18:44:11,303 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 18:44:11,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:11,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:11,320 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 18:44:11,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,322 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 18:44:11,323 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 18:44:11,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:11,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:11,395 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:11,400 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 18:44:11,400 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:11,400 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:11,400 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:11,400 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:11,400 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:11,400 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,401 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:11,401 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:11,401 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:44:11,401 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:11,401 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:11,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:11,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:11,433 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:11,434 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:11,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,437 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 18:44:11,438 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 18:44:11,439 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 18:44:11,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:11,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:11,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:11,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:11,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:11,451 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:11,451 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:11,454 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:11,459 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:11,459 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:11,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,464 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 18:44:11,469 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 18:44:11,469 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:11,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:44:11,476 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:11,476 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:11,476 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 18:44:11,485 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 18:44:11,486 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:11,499 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:11,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:11,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:11,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:11,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:11,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:11,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:11,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:11,522 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:11,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:11,551 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 18:44:11,552 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:11,552 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2104 states and 4137 transitions. cyclomatic complexity: 2204 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 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 18:44:11,647 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2104 states and 4137 transitions. cyclomatic complexity: 2204. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 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 4674 states and 9121 transitions. Complement of second has 6 states. [2025-04-26 18:44:11,648 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 18:44:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 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 18:44:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-04-26 18:44:11,649 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:44:11,649 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:11,649 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 18:44:11,649 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:11,649 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 18:44:11,649 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:11,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4674 states and 9121 transitions. [2025-04-26 18:44:11,679 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 162 [2025-04-26 18:44:11,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4674 states to 3021 states and 5857 transitions. [2025-04-26 18:44:11,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1141 [2025-04-26 18:44:11,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1328 [2025-04-26 18:44:11,699 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3021 states and 5857 transitions. [2025-04-26 18:44:11,699 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:11,699 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3021 states and 5857 transitions. [2025-04-26 18:44:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states and 5857 transitions. [2025-04-26 18:44:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2845. [2025-04-26 18:44:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2845 states have (on average 1.9585237258347978) internal successors, (in total 5572), 2844 states have internal predecessors, (5572), 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 18:44:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 5572 transitions. [2025-04-26 18:44:11,758 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2845 states and 5572 transitions. [2025-04-26 18:44:11,758 INFO L438 stractBuchiCegarLoop]: Abstraction has 2845 states and 5572 transitions. [2025-04-26 18:44:11,758 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:44:11,759 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2845 states and 5572 transitions. [2025-04-26 18:44:11,770 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 162 [2025-04-26 18:44:11,770 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:11,771 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:11,772 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:44:11,772 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:11,772 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[82] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[84] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[86] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[88] L38-->L43: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[90] L43-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[92] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[117] L15-->$Ultimate##0: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[94] $Ultimate##0-->L50-1: Formula: (< 1 v_f_5) InVars {f=v_f_5} OutVars{f=v_f_5} AuxVars[] AssignedVars[]" [2025-04-26 18:44:11,772 INFO L754 eck$LassoCheckResult]: Loop: "[96] L50-1-->L52: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[98] L52-->L53: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[99] L53-->L50-1: Formula: (= (+ v_c_5 1) v_c_6) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:11,772 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1287971808, now seen corresponding path program 1 times [2025-04-26 18:44:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:11,773 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687185729] [2025-04-26 18:44:11,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:11,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 18:44:11,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 18:44:11,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,782 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:11,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 18:44:11,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 18:44:11,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:11,788 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash 125184, now seen corresponding path program 1 times [2025-04-26 18:44:11,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:11,788 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121766930] [2025-04-26 18:44:11,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:11,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:11,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:11,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:11,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,791 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:11,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:11,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:11,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:11,793 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1269785729, now seen corresponding path program 1 times [2025-04-26 18:44:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:11,794 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099629057] [2025-04-26 18:44:11,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:11,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:44:11,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:44:11,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,798 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:11,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:44:11,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:44:11,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:11,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:11,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:11,819 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:11,823 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:11,824 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:11,824 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:11,824 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:11,824 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,824 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:11,824 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:11,824 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:44:11,824 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:11,824 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:11,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:11,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:11,863 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:11,863 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:11,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,866 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 18:44:11,867 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 18:44:11,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:11,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:11,891 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 18:44:11,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:11,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 18:44:11,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:11,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:11,923 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:44:11,924 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 18:44:11,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 18:44:11,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,932 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:11,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 18:44:11,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:11,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:11,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 18:44:11,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:11,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:11,954 INFO L229 MonitoredProcess]: Starting monitored process 17 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 18:44:11,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 18:44:11,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:11,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:12,029 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:12,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 18:44:12,035 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:12,035 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:12,035 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:12,035 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:12,035 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:12,035 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,035 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:12,035 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:12,035 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:44:12,035 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:12,035 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:12,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:12,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:12,074 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:12,074 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:12,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,076 INFO L229 MonitoredProcess]: Starting monitored process 18 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 18:44:12,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 18:44:12,079 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 18:44:12,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:12,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:12,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:12,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:12,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:12,091 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:12,091 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:12,095 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:44:12,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 18:44:12,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,106 INFO L229 MonitoredProcess]: Starting monitored process 19 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 18:44:12,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 18:44:12,108 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 18:44:12,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:12,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:12,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:12,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:12,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:12,120 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:12,121 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:12,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:12,126 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:44:12,127 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:44:12,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,129 INFO L229 MonitoredProcess]: Starting monitored process 20 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 18:44:12,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 18:44:12,131 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:12,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:12,135 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:12,135 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:12,135 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 18:44:12,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:12,144 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:12,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:12,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 18:44:12,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 18:44:12,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:12,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:12,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:12,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:12,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:12,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:12,216 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:12,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:12,253 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 18:44:12,253 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:12,253 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2845 states and 5572 transitions. cyclomatic complexity: 2916 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 18:44:12,362 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2845 states and 5572 transitions. cyclomatic complexity: 2916. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 6196 states and 12053 transitions. Complement of second has 6 states. [2025-04-26 18:44:12,362 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 18:44:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 18:44:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-04-26 18:44:12,363 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 11 letters. Loop has 3 letters. [2025-04-26 18:44:12,363 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:12,363 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 14 letters. Loop has 3 letters. [2025-04-26 18:44:12,363 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:12,363 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 11 letters. Loop has 6 letters. [2025-04-26 18:44:12,363 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:12,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6196 states and 12053 transitions. [2025-04-26 18:44:12,403 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 45 [2025-04-26 18:44:12,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6196 states to 3599 states and 6940 transitions. [2025-04-26 18:44:12,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1046 [2025-04-26 18:44:12,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1155 [2025-04-26 18:44:12,428 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3599 states and 6940 transitions. [2025-04-26 18:44:12,428 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:12,428 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3599 states and 6940 transitions. [2025-04-26 18:44:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states and 6940 transitions. [2025-04-26 18:44:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3462. [2025-04-26 18:44:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3462 states have (on average 1.953783939919122) internal successors, (in total 6764), 3461 states have internal predecessors, (6764), 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 18:44:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 6764 transitions. [2025-04-26 18:44:12,489 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3462 states and 6764 transitions. [2025-04-26 18:44:12,489 INFO L438 stractBuchiCegarLoop]: Abstraction has 3462 states and 6764 transitions. [2025-04-26 18:44:12,489 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:44:12,490 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3462 states and 6764 transitions. [2025-04-26 18:44:12,500 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 45 [2025-04-26 18:44:12,500 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:12,500 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:12,500 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:44:12,500 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:12,501 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[82] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[84] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[86] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[88] L38-->L43: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[90] L43-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[92] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[117] L15-->$Ultimate##0: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[94] $Ultimate##0-->L50-1: Formula: (< 1 v_f_5) InVars {f=v_f_5} OutVars{f=v_f_5} AuxVars[] AssignedVars[]" "[95] L50-1-->thread3FINAL: Formula: (<= v_z1_4 v_y1_4) InVars {y1=v_y1_4, z1=v_z1_4} OutVars{y1=v_y1_4, z1=v_z1_4} AuxVars[] AssignedVars[]" "[97] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[108] L16-->$Ultimate##0: Formula: (and (= 4 v_thread4Thread1of1ForFork0_thidvar3_2) (= 4 v_thread4Thread1of1ForFork0_thidvar1_2) (= 4 v_thread4Thread1of1ForFork0_thidvar2_2) (= 4 v_thread4Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread4Thread1of1ForFork0_thidvar3=v_thread4Thread1of1ForFork0_thidvar3_2, thread4Thread1of1ForFork0_thidvar2=v_thread4Thread1of1ForFork0_thidvar2_2, thread4Thread1of1ForFork0_thidvar1=v_thread4Thread1of1ForFork0_thidvar1_2, thread4Thread1of1ForFork0_thidvar0=v_thread4Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork0_thidvar3, thread4Thread1of1ForFork0_thidvar2, thread4Thread1of1ForFork0_thidvar1, thread4Thread1of1ForFork0_thidvar0]" "[100] $Ultimate##0-->L61-1: Formula: (< 1 v_f_7) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" [2025-04-26 18:44:12,501 INFO L754 eck$LassoCheckResult]: Loop: "[102] L61-1-->L63: Formula: (< v_y2_1 v_z2_3) InVars {z2=v_z2_3, y2=v_y2_1} OutVars{z2=v_z2_3, y2=v_y2_1} AuxVars[] AssignedVars[]" "[104] L63-->L64: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[105] L64-->L61-1: Formula: (= v_c_8 (+ v_c_7 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:12,501 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash 708621562, now seen corresponding path program 1 times [2025-04-26 18:44:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:12,502 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871638748] [2025-04-26 18:44:12,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:12,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 18:44:12,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 18:44:12,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:12,507 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:12,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 18:44:12,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 18:44:12,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:12,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:12,512 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 131142, now seen corresponding path program 1 times [2025-04-26 18:44:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:12,512 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211660177] [2025-04-26 18:44:12,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:12,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:12,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:12,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:12,514 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:12,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:12,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:12,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:12,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:12,517 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash 780795053, now seen corresponding path program 1 times [2025-04-26 18:44:12,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:12,517 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508892998] [2025-04-26 18:44:12,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:12,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:12,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 18:44:12,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 18:44:12,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:12,522 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:12,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 18:44:12,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 18:44:12,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:12,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:12,559 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:12,559 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:12,559 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:12,559 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:12,559 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:12,559 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,559 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:12,559 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:12,559 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:44:12,559 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:12,559 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:12,560 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:12,563 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:12,586 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:12,586 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:12,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,588 INFO L229 MonitoredProcess]: Starting monitored process 21 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 18:44:12,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 18:44:12,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:12,591 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:12,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:12,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,616 INFO L229 MonitoredProcess]: Starting monitored process 22 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 18:44:12,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 18:44:12,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:12,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:12,646 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:44:12,646 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 18:44:12,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 18:44:12,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,658 INFO L229 MonitoredProcess]: Starting monitored process 23 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 18:44:12,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 18:44:12,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:12,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:12,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:12,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,681 INFO L229 MonitoredProcess]: Starting monitored process 24 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 18:44:12,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 18:44:12,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:12,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:12,750 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:12,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:12,756 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:12,756 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:12,756 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:12,756 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:12,756 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:12,756 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,756 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:12,756 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:12,756 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:44:12,756 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:12,756 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:12,757 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:12,760 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:12,783 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:12,783 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:12,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,785 INFO L229 MonitoredProcess]: Starting monitored process 25 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 18:44:12,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 18:44:12,788 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 18:44:12,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:12,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:12,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:12,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:12,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:12,799 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:12,799 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:12,800 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:44:12,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 18:44:12,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,816 INFO L229 MonitoredProcess]: Starting monitored process 26 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 18:44:12,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 18:44:12,818 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 18:44:12,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:12,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:12,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:12,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:12,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:12,830 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:12,830 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:12,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:12,833 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:12,833 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:12,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:12,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:12,835 INFO L229 MonitoredProcess]: Starting monitored process 27 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 18:44:12,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 18:44:12,838 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:12,840 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:44:12,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:12,841 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:12,841 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:12,841 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-04-26 18:44:12,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 18:44:12,848 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:12,858 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:12,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 18:44:12,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 18:44:12,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:12,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:12,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:12,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:12,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:12,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:12,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:12,900 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:12,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:12,931 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 18:44:12,931 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:12,931 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3462 states and 6764 transitions. cyclomatic complexity: 3501 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (in total 18), 4 states have internal predecessors, (18), 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 18:44:13,004 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3462 states and 6764 transitions. cyclomatic complexity: 3501. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (in total 18), 4 states have internal predecessors, (18), 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 6921 states and 13341 transitions. Complement of second has 6 states. [2025-04-26 18:44:13,005 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 18:44:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (in total 18), 4 states have internal predecessors, (18), 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 18:44:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-04-26 18:44:13,010 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 15 letters. Loop has 3 letters. [2025-04-26 18:44:13,011 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:13,011 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 18 letters. Loop has 3 letters. [2025-04-26 18:44:13,011 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:13,012 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 88 transitions. Stem has 15 letters. Loop has 6 letters. [2025-04-26 18:44:13,012 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:13,012 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6921 states and 13341 transitions. [2025-04-26 18:44:13,057 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:44:13,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6921 states to 0 states and 0 transitions. [2025-04-26 18:44:13,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:44:13,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:44:13,057 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:44:13,057 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:44:13,057 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:44:13,057 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:44:13,057 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:44:13,058 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:44:13,058 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:44:13,058 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:44:13,058 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:44:13,071 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 18:44:13,072 INFO L201 PluginConnector]: Adding new model pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:44:13 BoogieIcfgContainer [2025-04-26 18:44:13,072 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:44:13,073 INFO L158 Benchmark]: Toolchain (without parser) took 4149.59ms. Allocated memory was 163.6MB in the beginning and 167.8MB in the end (delta: 4.2MB). Free memory was 89.6MB in the beginning and 81.5MB in the end (delta: 8.1MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2025-04-26 18:44:13,073 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 163.6MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:44:13,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.11ms. Allocated memory is still 163.6MB. Free memory was 89.6MB in the beginning and 87.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:44:13,073 INFO L158 Benchmark]: Boogie Preprocessor took 30.32ms. Allocated memory is still 163.6MB. Free memory was 87.7MB in the beginning and 86.6MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:44:13,073 INFO L158 Benchmark]: RCFGBuilder took 200.94ms. Allocated memory is still 163.6MB. Free memory was 86.6MB in the beginning and 77.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:44:13,074 INFO L158 Benchmark]: BuchiAutomizer took 3882.37ms. Allocated memory was 163.6MB in the beginning and 167.8MB in the end (delta: 4.2MB). Free memory was 77.1MB in the beginning and 81.5MB in the end (delta: -4.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:44:13,075 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 163.6MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.11ms. Allocated memory is still 163.6MB. Free memory was 89.6MB in the beginning and 87.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 30.32ms. Allocated memory is still 163.6MB. Free memory was 87.7MB in the beginning and 86.6MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 200.94ms. Allocated memory is still 163.6MB. Free memory was 86.6MB in the beginning and 77.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3882.37ms. Allocated memory was 163.6MB in the beginning and 167.8MB in the end (delta: 4.2MB). Free memory was 77.1MB in the beginning and 81.5MB in the end (delta: -4.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 478 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 396 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 211 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 185 mSDtfsCounter, 147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.6s InitialAbstraction: Time to compute Ample Reduction [ms]: 654, Number of transitions in reduction automaton: 3415, Number of states in reduction automaton: 1784, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z2 and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:44:13,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...