/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 ../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:53:33,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:53:33,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:53:33,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:53:33,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:53:33,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:53:33,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:53:33,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:53:33,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:53:33,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:53:33,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:53:33,278 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:53:33,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:53:33,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:53:33,280 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:53:33,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:53:33,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:53:33,281 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:53:33,281 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:53:33,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:53:33,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:53:33,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:53:33,500 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:53:33,500 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:53:33,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl [2025-04-26 16:53:33,501 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl' [2025-04-26 16:53:33,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:53:33,516 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:53:33,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:53:33,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:53:33,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:53:33,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,546 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:53:33,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:53:33,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:53:33,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:53:33,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:53:33,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:53:33,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:53:33,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:53:33,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:53:33,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/1) ... [2025-04-26 16:53:33,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:53:33,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:33,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:33,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:53:33,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:53:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:53:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:53:33,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:53:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:53:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:53:33,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:53:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:53:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:53:33,604 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:53:33,633 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:53:33,634 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:53:33,698 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:53:33,698 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:53:33,705 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:53:33,705 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:53:33,705 INFO L201 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:53:33 BoogieIcfgContainer [2025-04-26 16:53:33,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:53:33,706 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:53:33,706 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:53:33,713 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:53:33,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:53:33,713 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:53:33" (1/2) ... [2025-04-26 16:53:33,714 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c2aa6d9 and model type incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:53:33, skipping insertion in model container [2025-04-26 16:53:33,714 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:53:33,715 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:53:33" (2/2) ... [2025-04-26 16:53:33,715 INFO L376 chiAutomizerObserver]: Analyzing ICFG incr-decr-zero.bpl [2025-04-26 16:53:33,769 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:53:33,816 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:53:33,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:53:33,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:33,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:33,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:53:33,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow [2025-04-26 16:53:33,880 INFO L116 PetriNetUnfolderBase]: 2/20 cut-off events. [2025-04-26 16:53:33,883 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:53:33,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-04-26 16:53:33,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow [2025-04-26 16:53:33,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2025-04-26 16:53:33,889 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 25 places, 20 transitions, 52 flow [2025-04-26 16:53:33,893 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:53:33,937 WARN L140 AmpleReduction]: Number of pruned transitions: 22 [2025-04-26 16:53:33,937 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:53:33,937 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 7 [2025-04-26 16:53:33,937 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:16 [2025-04-26 16:53:33,937 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:20 [2025-04-26 16:53:33,937 WARN L145 AmpleReduction]: Times succ was already a loop node:3 [2025-04-26 16:53:33,937 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:9 [2025-04-26 16:53:33,937 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:53:33,939 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 44 states, 42 states have (on average 1.4285714285714286) internal successors, (in total 60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:33,944 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:53:33,944 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:53:33,944 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:53:33,944 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:53:33,944 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:53:33,944 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:53:33,944 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:53:33,944 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:53:33,946 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 44 states, 42 states have (on average 1.4285714285714286) internal successors, (in total 60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:33,953 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2025-04-26 16:53:33,953 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:53:33,954 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:53:33,956 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:53:33,956 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:53:33,956 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:53:33,956 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 44 states, 42 states have (on average 1.4285714285714286) internal successors, (in total 60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:33,958 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2025-04-26 16:53:33,958 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:53:33,958 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:53:33,958 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:53:33,958 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:53:33,962 INFO L752 eck$LassoCheckResult]: Stem: "[41] $Ultimate##0-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x]" "[62] L16-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_12} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_i]" "[48] $Ultimate##0-->L30-1: Formula: (= v_thread1Thread1of1ForFork0_i_1 0) InVars {} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i]" [2025-04-26 16:53:33,962 INFO L754 eck$LassoCheckResult]: Loop: "[50] L30-1-->L31: Formula: (< v_thread1Thread1of1ForFork0_i_5 v_N_1) InVars {thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_5, N=v_N_1} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_5, N=v_N_1} AuxVars[] AssignedVars[]" "[52] L31-->L32: Formula: (= v_x_1 (+ v_x_2 1)) InVars {x=v_x_2} OutVars{x=v_x_1} AuxVars[] AssignedVars[x]" "[53] L32-->L30-1: Formula: (= (+ v_thread1Thread1of1ForFork0_i_7 1) v_thread1Thread1of1ForFork0_i_8) InVars {thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_7} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_8} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i]" [2025-04-26 16:53:33,965 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 71162, now seen corresponding path program 1 times [2025-04-26 16:53:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:53:33,970 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572435078] [2025-04-26 16:53:33,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:53:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:53:34,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,016 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:53:34,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:53:34,031 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash 79506, now seen corresponding path program 1 times [2025-04-26 16:53:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:53:34,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263420453] [2025-04-26 16:53:34,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:53:34,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:53:34,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,039 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:53:34,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:53:34,049 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2120036857, now seen corresponding path program 1 times [2025-04-26 16:53:34,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:53:34,049 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183744545] [2025-04-26 16:53:34,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:53:34,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:53:34,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:53:34,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:53:34,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,059 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:53:34,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:53:34,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:53:34,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:53:34,138 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:53:34,139 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:53:34,139 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:53:34,139 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:53:34,140 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:53:34,140 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,140 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:53:34,140 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:53:34,140 INFO L132 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_petrified1_Iteration1_Loop [2025-04-26 16:53:34,140 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:53:34,140 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:53:34,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:34,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:34,213 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:53:34,214 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:53:34,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:53:34,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:53:34,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:53:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:53:34,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:53:34,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,283 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:53:34,284 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=1}, {x=7}, {x=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-04-26 16:53:34,290 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 16:53:34,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:53:34,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:53:34,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:53:34,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:53:34,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:53:34,322 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,389 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:53:34,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:53:34,394 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:53:34,394 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:53:34,394 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:53:34,394 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:53:34,394 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:53:34,394 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,394 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:53:34,394 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:53:34,395 INFO L132 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_petrified1_Iteration1_Loop [2025-04-26 16:53:34,395 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:53:34,395 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:53:34,396 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:34,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:34,433 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:53:34,436 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:53:34,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:53:34,441 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:53:34,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:53:34,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:53:34,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:53:34,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:53:34,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:53:34,480 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:53:34,481 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:53:34,483 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:53:34,489 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 16:53:34,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:53:34,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:53:34,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:53:34,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:53:34,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:53:34,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:53:34,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:53:34,505 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:53:34,505 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:53:34,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:53:34,512 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:53:34,512 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:53:34,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,515 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:53:34,516 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:53:34,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:53:34,519 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:53:34,519 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:53:34,520 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread1Thread1of1ForFork0_i, N) = -1*thread1Thread1of1ForFork0_i + 1*N Supporting invariants [] [2025-04-26 16:53:34,526 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 16:53:34,529 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:53:34,547 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:34,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:53:34,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:53:34,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:53:34,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:53:34,581 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:53:34,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:53:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:53:34,628 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:53:34,630 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 44 states, 42 states have (on average 1.4285714285714286) internal successors, (in total 60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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 16:53:34,711 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 44 states, 42 states have (on average 1.4285714285714286) internal successors, (in total 60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 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 93 states and 134 transitions. Complement of second has 6 states. [2025-04-26 16:53:34,712 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:53:34,715 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 16:53:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2025-04-26 16:53:34,721 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:53:34,724 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:53:34,724 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:53:34,724 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:53:34,724 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:53:34,724 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:53:34,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 134 transitions. [2025-04-26 16:53:34,727 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2025-04-26 16:53:34,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 34 states and 47 transitions. [2025-04-26 16:53:34,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2025-04-26 16:53:34,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2025-04-26 16:53:34,730 INFO L74 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2025-04-26 16:53:34,730 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:53:34,730 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 47 transitions. [2025-04-26 16:53:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2025-04-26 16:53:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2025-04-26 16:53:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.3870967741935485) internal successors, (in total 43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2025-04-26 16:53:34,745 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 43 transitions. [2025-04-26 16:53:34,745 INFO L438 stractBuchiCegarLoop]: Abstraction has 31 states and 43 transitions. [2025-04-26 16:53:34,745 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:53:34,746 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 43 transitions. [2025-04-26 16:53:34,746 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2025-04-26 16:53:34,746 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:53:34,746 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:53:34,746 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:53:34,746 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:53:34,747 INFO L752 eck$LassoCheckResult]: Stem: "[41] $Ultimate##0-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x]" "[62] L16-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_12} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_i]" "[48] $Ultimate##0-->L30-1: Formula: (= v_thread1Thread1of1ForFork0_i_1 0) InVars {} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i]" "[49] L30-1-->thread1FINAL: Formula: (<= v_N_2 v_thread1Thread1of1ForFork0_i_3) InVars {thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_3, N=v_N_2} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_3, N=v_N_2} AuxVars[] AssignedVars[]" "[51] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[65] L16-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_12, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j, thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[54] $Ultimate##0-->L42-1: Formula: (= v_thread2Thread1of1ForFork1_j_1 0) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_1} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j]" [2025-04-26 16:53:34,747 INFO L754 eck$LassoCheckResult]: Loop: "[56] L42-1-->L43: Formula: (< v_thread2Thread1of1ForFork1_j_5 v_N_4) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_5, N=v_N_4} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_5, N=v_N_4} AuxVars[] AssignedVars[]" "[58] L43-->L44: Formula: (= v_x_4 (+ v_x_3 1)) InVars {x=v_x_4} OutVars{x=v_x_3} AuxVars[] AssignedVars[x]" "[59] L44-->L42-1: Formula: (= (+ v_thread2Thread1of1ForFork1_j_7 1) v_thread2Thread1of1ForFork1_j_8) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_7} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_8} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j]" [2025-04-26 16:53:34,747 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1296602801, now seen corresponding path program 1 times [2025-04-26 16:53:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:53:34,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696002092] [2025-04-26 16:53:34,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:53:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:53:34,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:53:34,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:53:34,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,756 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:53:34,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:53:34,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:53:34,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:53:34,764 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 85464, now seen corresponding path program 1 times [2025-04-26 16:53:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:53:34,764 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036851608] [2025-04-26 16:53:34,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:53:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:53:34,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,769 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:53:34,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:34,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:34,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:53:34,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:53:34,775 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1841759960, now seen corresponding path program 1 times [2025-04-26 16:53:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:53:34,775 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795679213] [2025-04-26 16:53:34,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:53:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:53:34,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:53:34,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:53:34,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:34,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:53:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:53:34,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:53:34,850 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795679213] [2025-04-26 16:53:34,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795679213] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:53:34,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:53:34,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-26 16:53:34,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181757984] [2025-04-26 16:53:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:53:34,877 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:53:34,877 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:53:34,877 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:53:34,877 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:53:34,877 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:53:34,877 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,877 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:53:34,877 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:53:34,878 INFO L132 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_petrified1_Iteration2_Loop [2025-04-26 16:53:34,878 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:53:34,878 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:53:34,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:34,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:34,911 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:53:34,911 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:53:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:53:34,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:53:34,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:53:34,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,937 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:53:34,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:53:34,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,966 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:53:34,967 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=3}, {x=-5}, {x=1}] Lambdas: [1, 1, 1] Nus: [0, 0] [2025-04-26 16:53:34,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:53:34,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,976 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:53:34,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:53:34,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:34,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:53:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:34,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:34,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:53:35,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:53:35,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:53:35,080 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:53:35,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:53:35,086 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:53:35,086 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:53:35,086 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:53:35,086 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:53:35,086 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:53:35,086 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:35,086 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:53:35,086 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:53:35,086 INFO L132 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_petrified1_Iteration2_Loop [2025-04-26 16:53:35,086 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:53:35,086 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:53:35,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:35,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:53:35,114 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:53:35,114 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:53:35,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:35,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:35,116 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:53:35,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:53:35,119 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:53:35,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:53:35,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:53:35,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:53:35,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:53:35,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:53:35,130 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:53:35,130 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:53:35,132 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:53:35,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:53:35,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:35,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:35,140 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 16:53:35,141 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 16:53:35,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:53:35,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:53:35,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:53:35,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:53:35,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:53:35,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:53:35,154 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:53:35,154 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:53:35,156 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:53:35,158 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:53:35,159 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:53:35,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:53:35,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:53:35,161 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 16:53:35,162 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 16:53:35,163 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:53:35,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:53:35,167 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:53:35,167 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:53:35,167 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread2Thread1of1ForFork1_j, N) = -1*thread2Thread1of1ForFork1_j + 1*N Supporting invariants [] [2025-04-26 16:53:35,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:53:35,174 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:53:35,185 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:53:35,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:53:35,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:53:35,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:35,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:53:35,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:53:35,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:53:35,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:53:35,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:53:35,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:53:35,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:53:35,211 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:53:35,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:53:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:53:35,233 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:53:35,233 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 43 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:35,262 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 43 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 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 55 states and 78 transitions. Complement of second has 6 states. [2025-04-26 16:53:35,262 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:53:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2025-04-26 16:53:35,263 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:53:35,263 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:53:35,263 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 16:53:35,263 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:53:35,263 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2025-04-26 16:53:35,263 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:53:35,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 78 transitions. [2025-04-26 16:53:35,264 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:53:35,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 0 states and 0 transitions. [2025-04-26 16:53:35,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:53:35,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:53:35,264 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:53:35,264 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:53:35,264 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:53:35,264 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:53:35,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:53:35,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-26 16:53:35,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-26 16:53:35,266 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (in total 10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:53:35,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:53:35,268 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:53:35,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:53:35,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:53:35,268 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:53:35,268 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:53:35,268 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:53:35,268 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:53:35,269 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:53:35,269 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:53:35,269 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:53:35,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:53:35,280 INFO L201 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:53:35 BoogieIcfgContainer [2025-04-26 16:53:35,280 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:53:35,281 INFO L158 Benchmark]: Toolchain (without parser) took 1764.94ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 88.4MB in the beginning and 72.6MB in the end (delta: 15.8MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2025-04-26 16:53:35,281 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.17ms. Allocated memory is still 155.2MB. Free memory was 89.4MB in the beginning and 89.2MB in the end (delta: 199.9kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:53:35,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.64ms. Allocated memory is still 155.2MB. Free memory was 88.4MB in the beginning and 86.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:53:35,281 INFO L158 Benchmark]: Boogie Preprocessor took 16.70ms. Allocated memory is still 155.2MB. Free memory was 86.5MB in the beginning and 85.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:53:35,281 INFO L158 Benchmark]: RCFGBuilder took 140.06ms. Allocated memory is still 155.2MB. Free memory was 85.5MB in the beginning and 76.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:53:35,282 INFO L158 Benchmark]: BuchiAutomizer took 1574.17ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 76.6MB in the beginning and 72.6MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:53:35,283 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 0.17ms. Allocated memory is still 155.2MB. Free memory was 89.4MB in the beginning and 89.2MB in the end (delta: 199.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.64ms. Allocated memory is still 155.2MB. Free memory was 88.4MB in the beginning and 86.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.70ms. Allocated memory is still 155.2MB. Free memory was 86.5MB in the beginning and 85.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 140.06ms. Allocated memory is still 155.2MB. Free memory was 85.5MB in the beginning and 76.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1574.17ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 76.6MB in the beginning and 72.6MB in the end (delta: 4.1MB). 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 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 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, 50 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 27 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 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: 47ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 125, Number of transitions in reduction automaton: 60, Number of states in reduction automaton: 44, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + N and consists of 4 locations. One deterministic module has affine ranking function N + -1 * j and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:53:35,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...