/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/varied-delta.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:22,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:22,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:22,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:22,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:22,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:22,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:22,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:22,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:22,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:22,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:22,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:22,530 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:22,531 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:22,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:22,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:22,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:22,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:22,532 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:22,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:22,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:22,533 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:22,533 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:22,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:22,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:22,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:22,758 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:22,759 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:22,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/varied-delta.c.bpl [2025-04-26 18:42:22,761 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/varied-delta.c.bpl' [2025-04-26 18:42:22,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:22,773 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:22,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:22,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:22,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:22,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,802 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:22,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:22,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:22,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:22,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:22,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:22,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:22,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:22,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:22,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:22,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,853 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 18:42:22,857 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 18:42:22,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:22,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:22,879 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:22,879 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 18:42:22,917 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:22,919 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:22,976 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:22,976 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:22,984 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:22,985 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:22,985 INFO L201 PluginConnector]: Adding new model varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:22 BoogieIcfgContainer [2025-04-26 18:42:22,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:22,988 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:22,988 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:22,992 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:22,992 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:22,993 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/2) ... [2025-04-26 18:42:22,994 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35181972 and model type varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:22, skipping insertion in model container [2025-04-26 18:42:22,995 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:22,995 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:22" (2/2) ... [2025-04-26 18:42:22,995 INFO L376 chiAutomizerObserver]: Analyzing ICFG varied-delta.c.bpl [2025-04-26 18:42:23,031 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 18:42:23,072 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:23,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,076 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 18:42:23,078 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 18:42:23,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 18 transitions, 50 flow [2025-04-26 18:42:23,136 INFO L116 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-04-26 18:42:23,141 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 18:42:23,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-04-26 18:42:23,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 18 transitions, 50 flow [2025-04-26 18:42:23,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 14 transitions, 40 flow [2025-04-26 18:42:23,147 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 19 places, 14 transitions, 40 flow [2025-04-26 18:42:23,148 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 14 transitions, 40 flow [2025-04-26 18:42:23,156 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (in total 52), 27 states have internal predecessors, (52), 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 18:42:23,157 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (in total 52), 27 states have internal predecessors, (52), 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 18:42:23,160 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:23,196 WARN L140 AmpleReduction]: Number of pruned transitions: 9 [2025-04-26 18:42:23,196 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:23,196 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 5 [2025-04-26 18:42:23,196 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:12 [2025-04-26 18:42:23,196 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:9 [2025-04-26 18:42:23,197 WARN L145 AmpleReduction]: Times succ was already a loop node:8 [2025-04-26 18:42:23,197 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 18:42:23,197 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:23,197 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 27 states, 26 states have (on average 1.5) internal successors, (in total 39), 26 states have internal predecessors, (39), 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 18:42:23,202 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:23,202 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:23,202 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:23,202 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:23,202 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:23,202 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:23,202 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:23,202 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:23,204 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.5) internal successors, (in total 39), 26 states have internal predecessors, (39), 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 18:42:23,211 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 15 [2025-04-26 18:42:23,211 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:23,211 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:23,214 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:23,214 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:23,214 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:23,214 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.5) internal successors, (in total 39), 26 states have internal predecessors, (39), 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 18:42:23,216 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 15 [2025-04-26 18:42:23,216 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:23,216 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:23,216 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:23,216 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:23,220 INFO L752 eck$LassoCheckResult]: Stem: "[30] $Ultimate##0-->L12: Formula: (< 0 v_d_6) InVars {d=v_d_6} OutVars{d=v_d_6} AuxVars[] AssignedVars[]" "[47] L12-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 18:42:23,220 INFO L754 eck$LassoCheckResult]: Loop: "[35] L21-->L23: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[37] L23-->L21: Formula: (= v_x1_2 (+ v_x1_3 v_d_1)) InVars {x1=v_x1_3, d=v_d_1} OutVars{x1=v_x1_2, d=v_d_1} AuxVars[] AssignedVars[x1]" [2025-04-26 18:42:23,224 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1938, now seen corresponding path program 1 times [2025-04-26 18:42:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:23,229 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400169551] [2025-04-26 18:42:23,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:23,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,273 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:23,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:23,287 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2083, now seen corresponding path program 1 times [2025-04-26 18:42:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:23,287 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206553294] [2025-04-26 18:42:23,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:23,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:23,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,294 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:23,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:23,300 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1863540, now seen corresponding path program 1 times [2025-04-26 18:42:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:23,300 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271468731] [2025-04-26 18:42:23,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:23,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:23,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:23,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,304 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:23,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:23,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:23,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:23,376 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:23,377 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:23,377 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:23,377 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:23,377 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:23,377 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,377 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:23,377 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:23,377 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration1_Lasso [2025-04-26 18:42:23,377 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:23,377 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:23,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,447 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:23,448 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:23,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,451 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 18:42:23,452 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 18:42:23,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:23,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:23,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 18:42:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,479 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 18:42:23,480 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 18:42:23,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:23,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:23,619 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:23,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 18:42:23,625 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:23,625 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:23,626 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:23,626 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:23,626 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:23,626 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,626 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:23,626 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:23,626 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration1_Lasso [2025-04-26 18:42:23,626 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:23,626 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:23,627 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,681 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:23,683 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:23,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,686 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 18:42:23,687 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 18:42:23,689 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 18:42:23,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:23,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:23,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:23,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:23,710 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:23,710 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:23,718 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:23,732 INFO L436 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2025-04-26 18:42:23,732 INFO L437 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 4 variables to zero. [2025-04-26 18:42:23,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,736 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 18:42:23,737 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 18:42:23,738 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:23,755 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 18:42:23,755 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 18:42:23,756 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:23,756 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [1*d - 1 >= 0] [2025-04-26 18:42:23,761 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 18:42:23,766 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 18:42:23,808 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:23,816 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-26 18:42:23,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:23,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:23,834 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 18:42:23,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:23,855 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 18:42:23,884 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2025-04-26 18:42:23,887 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 26 states have (on average 1.5) internal successors, (in total 39), 26 states have internal predecessors, (39), 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 1.0) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,989 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 26 states have (on average 1.5) internal successors, (in total 39), 26 states have internal predecessors, (39), 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 1.0) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 57 states and 84 transitions. Complement of second has 7 states. [2025-04-26 18:42:23,991 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2025-04-26 18:42:24,001 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 18:42:24,001 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,001 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:42:24,002 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,002 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:42:24,002 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 84 transitions. [2025-04-26 18:42:24,004 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-04-26 18:42:24,006 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 21 states and 31 transitions. [2025-04-26 18:42:24,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2025-04-26 18:42:24,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2025-04-26 18:42:24,007 INFO L74 IsDeterministic]: Start isDeterministic. Operand 21 states and 31 transitions. [2025-04-26 18:42:24,007 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:24,007 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 31 transitions. [2025-04-26 18:42:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 31 transitions. [2025-04-26 18:42:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2025-04-26 18:42:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (in total 29), 18 states have internal predecessors, (29), 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 18:42:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2025-04-26 18:42:24,022 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 29 transitions. [2025-04-26 18:42:24,022 INFO L438 stractBuchiCegarLoop]: Abstraction has 19 states and 29 transitions. [2025-04-26 18:42:24,022 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:24,022 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 29 transitions. [2025-04-26 18:42:24,023 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-04-26 18:42:24,023 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:24,023 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:24,023 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:42:24,023 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:24,025 INFO L752 eck$LassoCheckResult]: Stem: "[30] $Ultimate##0-->L12: Formula: (< 0 v_d_6) InVars {d=v_d_6} OutVars{d=v_d_6} AuxVars[] AssignedVars[]" "[47] L12-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[35] L21-->L23: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[44] L12-1-->L30: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 18:42:24,025 INFO L754 eck$LassoCheckResult]: Loop: "[39] L30-->L32: Formula: (< v_d_2 v_w_1) InVars {d=v_d_2, w=v_w_1} OutVars{d=v_d_2, w=v_w_1} AuxVars[] AssignedVars[]" "[41] L32-->L30: Formula: (= v_d_3 (+ v_d_4 1)) InVars {d=v_d_4} OutVars{d=v_d_3} AuxVars[] AssignedVars[d]" [2025-04-26 18:42:24,026 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1863547, now seen corresponding path program 1 times [2025-04-26 18:42:24,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,026 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787185955] [2025-04-26 18:42:24,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,033 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,040 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2211, now seen corresponding path program 1 times [2025-04-26 18:42:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,040 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537878587] [2025-04-26 18:42:24,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,044 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,049 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1790869917, now seen corresponding path program 1 times [2025-04-26 18:42:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,049 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236405229] [2025-04-26 18:42:24,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:24,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:24,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,057 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:24,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:24,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,080 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:24,080 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:24,080 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:24,080 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:24,080 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:24,080 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,081 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:24,081 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:24,081 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:24,081 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:24,081 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:24,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,099 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:24,099 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,103 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 18:42:24,104 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 18:42:24,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:24,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,123 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 18:42:24,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,125 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 18:42:24,127 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 18:42:24,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:24,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,193 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:24,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:24,198 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:24,198 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:24,198 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:24,198 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:24,198 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:24,198 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,198 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:24,198 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:24,198 INFO L132 ssoRankerPreferences]: Filename of dumped script: varied-delta.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:24,198 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:24,198 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:24,199 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,216 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:24,217 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:24,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,219 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 18:42:24,220 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 18:42:24,221 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 18:42:24,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:24,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:24,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:24,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:24,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:24,233 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:24,233 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:24,237 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:24,239 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:24,240 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:24,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,242 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 18:42:24,244 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 18:42:24,246 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:24,250 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 18:42:24,250 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:24,250 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:24,250 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(d, w) = -1*d + 1*w Supporting invariants [] [2025-04-26 18:42:24,256 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 18:42:24,257 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:24,271 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:24,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:24,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,285 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:24,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:24,298 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 18:42:24,299 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 18:42:24,299 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 29 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,317 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 29 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 35 states and 49 transitions. Complement of second has 6 states. [2025-04-26 18:42:24,317 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 18:42:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2025-04-26 18:42:24,318 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:42:24,318 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,318 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:42:24,318 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,318 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 18:42:24,318 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 49 transitions. [2025-04-26 18:42:24,319 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:24,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2025-04-26 18:42:24,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:24,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:24,319 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:24,319 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:24,319 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:24,319 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:24,319 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:24,320 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:24,320 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:24,320 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:24,320 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:24,332 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 18:42:24,333 INFO L201 PluginConnector]: Adding new model varied-delta.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:24 BoogieIcfgContainer [2025-04-26 18:42:24,333 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:24,333 INFO L158 Benchmark]: Toolchain (without parser) took 1560.05ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 87.2MB in the beginning and 80.9MB in the end (delta: 6.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:24,334 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.82ms. Allocated memory is still 159.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:24,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.67ms. Allocated memory is still 159.4MB. Free memory was 87.2MB in the beginning and 84.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:24,334 INFO L158 Benchmark]: Boogie Preprocessor took 16.34ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 83.7MB in the end (delta: 971.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:24,334 INFO L158 Benchmark]: RCFGBuilder took 164.44ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 75.2MB in the end (delta: 8.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:24,334 INFO L158 Benchmark]: BuchiAutomizer took 1344.72ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.1MB in the beginning and 80.9MB in the end (delta: -5.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:24,335 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 0.82ms. Allocated memory is still 159.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.67ms. Allocated memory is still 159.4MB. Free memory was 87.2MB in the beginning and 84.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.34ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 83.7MB in the end (delta: 971.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 164.44ms. Allocated memory is still 159.4MB. Free memory was 83.6MB in the beginning and 75.2MB in the end (delta: 8.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * BuchiAutomizer took 1344.72ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.1MB in the beginning and 80.9MB in the end (delta: -5.8MB). 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 1.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 12 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp88 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 71ms VariablesStem: 1 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 129, Number of transitions in reduction automaton: 39, Number of states in reduction automaton: 27, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * d + w 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 18:42:24,347 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...