/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/c3-barrier-2t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:56:34,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:56:34,916 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:56:34,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:56:34,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:56:34,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:56:34,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:56:34,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:56:34,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:56:34,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:56:34,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:56:34,944 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:56:34,944 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:56:34,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:56:34,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:56:34,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:34,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:56:34,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:56:34,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:56:34,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:56:34,946 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:56:34,946 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:56:34,946 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:56:35,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:56:35,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:56:35,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:56:35,201 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:56:35,201 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:56:35,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/c3-barrier-2t.c.bpl [2025-04-26 16:56:35,203 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/c3-barrier-2t.c.bpl' [2025-04-26 16:56:35,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:56:35,218 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:56:35,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:35,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:56:35,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:56:35,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,262 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:56:35,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:56:35,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:56:35,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:56:35,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:56:35,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,273 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:56:35,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:56:35,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:56:35,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:56:35,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/1) ... [2025-04-26 16:56:35,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:56:35,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:35,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:35,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:56:35,341 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:56:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:56:35,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:56:35,341 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:56:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:56:35,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:56:35,342 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:56:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:56:35,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:56:35,342 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:56:35,374 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:56:35,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:56:35,449 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:56:35,449 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:56:35,456 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:56:35,457 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:56:35,458 INFO L201 PluginConnector]: Adding new model c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:35 BoogieIcfgContainer [2025-04-26 16:56:35,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:56:35,459 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:56:35,459 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:56:35,463 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:56:35,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:35,463 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:56:35" (1/2) ... [2025-04-26 16:56:35,464 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58c6286b and model type c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:56:35, skipping insertion in model container [2025-04-26 16:56:35,464 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:56:35,464 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:56:35" (2/2) ... [2025-04-26 16:56:35,465 INFO L376 chiAutomizerObserver]: Analyzing ICFG c3-barrier-2t.c.bpl [2025-04-26 16:56:35,507 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:56:35,546 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:56:35,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:56:35,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:35,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:35,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:56:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 74 flow [2025-04-26 16:56:35,610 INFO L116 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-04-26 16:56:35,611 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:56:35,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-04-26 16:56:35,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 30 transitions, 74 flow [2025-04-26 16:56:35,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-04-26 16:56:35,618 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 29 places, 26 transitions, 64 flow [2025-04-26 16:56:35,623 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:56:35,741 WARN L140 AmpleReduction]: Number of pruned transitions: 55 [2025-04-26 16:56:35,741 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:56:35,742 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 10 [2025-04-26 16:56:35,742 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:43 [2025-04-26 16:56:35,742 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:46 [2025-04-26 16:56:35,742 WARN L145 AmpleReduction]: Times succ was already a loop node:26 [2025-04-26 16:56:35,742 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:11 [2025-04-26 16:56:35,742 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:56:35,748 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 100 states, 99 states have (on average 1.6262626262626263) internal successors, (in total 161), 99 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:35,752 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:56:35,753 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:56:35,753 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:56:35,753 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:56:35,753 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:56:35,753 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:56:35,753 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:56:35,753 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:56:35,754 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 100 states, 99 states have (on average 1.6262626262626263) internal successors, (in total 161), 99 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:35,763 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 65 [2025-04-26 16:56:35,763 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:35,763 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:35,767 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:56:35,767 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:56:35,767 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:56:35,768 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 100 states, 99 states have (on average 1.6262626262626263) internal successors, (in total 161), 99 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:35,770 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 65 [2025-04-26 16:56:35,770 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:35,770 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:35,770 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:56:35,770 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:56:35,773 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:56:35,774 INFO L754 eck$LassoCheckResult]: Loop: "[67] L22-->L24: Formula: (< (+ v_x4_1 v_x1_1) v_z_2) InVars {x4=v_x4_1, x1=v_x1_1, z=v_z_2} OutVars{x4=v_x4_1, x1=v_x1_1, z=v_z_2} AuxVars[] AssignedVars[]" "[69] L24-->L25: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[71] L25-->L22: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-04-26 16:56:35,777 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2940, now seen corresponding path program 1 times [2025-04-26 16:56:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:35,781 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387133725] [2025-04-26 16:56:35,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:35,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:35,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:35,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:35,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:35,826 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:35,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:35,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:35,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:35,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:35,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:35,847 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash 96388, now seen corresponding path program 1 times [2025-04-26 16:56:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:35,849 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309626102] [2025-04-26 16:56:35,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:35,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:35,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:35,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:35,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:35,856 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:35,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:35,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:35,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:35,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:35,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:35,865 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash 87652137, now seen corresponding path program 1 times [2025-04-26 16:56:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:35,865 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578672163] [2025-04-26 16:56:35,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:35,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:35,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:35,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:35,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:35,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:35,873 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:35,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:35,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:35,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:35,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:35,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:35,949 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:35,950 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:35,950 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:35,950 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:35,950 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:35,951 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:35,951 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:35,951 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:35,951 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:35,951 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:35,951 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:35,963 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:36,057 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:36,057 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:36,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:56:36,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:36,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:36,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:56:36,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:56:36,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:36,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:36,171 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:36,176 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 16:56:36,176 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:36,176 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:36,176 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:36,176 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:36,176 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:36,176 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,176 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:36,176 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:36,176 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:56:36,176 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:36,176 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:36,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:36,207 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:36,210 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:36,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:56:36,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:56:36,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:36,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:36,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:36,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:36,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:36,245 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:36,245 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:36,261 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:36,265 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:56:36,265 INFO L437 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:56:36,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:56:36,271 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:36,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:56:36,275 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:36,275 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:36,275 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1, x4) = 1*z - 1*x1 - 1*x4 Supporting invariants [] [2025-04-26 16:56:36,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:56:36,287 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:36,306 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:36,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:36,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:36,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:36,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:36,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:36,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:36,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:36,341 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 16:56:36,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:56:36,429 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:56:36,431 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 100 states, 99 states have (on average 1.6262626262626263) internal successors, (in total 161), 99 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:36,521 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 100 states, 99 states have (on average 1.6262626262626263) internal successors, (in total 161), 99 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 219 states and 373 transitions. Complement of second has 6 states. [2025-04-26 16:56:36,522 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-04-26 16:56:36,532 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:56:36,533 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:36,533 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:56:36,533 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:36,533 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:56:36,533 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:36,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 219 states and 373 transitions. [2025-04-26 16:56:36,541 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 49 [2025-04-26 16:56:36,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 219 states to 133 states and 229 transitions. [2025-04-26 16:56:36,552 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2025-04-26 16:56:36,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2025-04-26 16:56:36,552 INFO L74 IsDeterministic]: Start isDeterministic. Operand 133 states and 229 transitions. [2025-04-26 16:56:36,553 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:36,553 INFO L218 hiAutomatonCegarLoop]: Abstraction has 133 states and 229 transitions. [2025-04-26 16:56:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states and 229 transitions. [2025-04-26 16:56:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2025-04-26 16:56:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.7166666666666666) internal successors, (in total 206), 119 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 206 transitions. [2025-04-26 16:56:36,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 206 transitions. [2025-04-26 16:56:36,572 INFO L438 stractBuchiCegarLoop]: Abstraction has 120 states and 206 transitions. [2025-04-26 16:56:36,572 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:56:36,572 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 206 transitions. [2025-04-26 16:56:36,574 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 49 [2025-04-26 16:56:36,574 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:36,574 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:36,574 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:56:36,574 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:36,574 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[91] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:56:36,574 INFO L754 eck$LassoCheckResult]: Loop: "[78] L39-->L41: Formula: (< v_x3_5 v_z_6) InVars {x3=v_x3_5, z=v_z_6} OutVars{x3=v_x3_5, z=v_z_6} AuxVars[] AssignedVars[]" "[80] L41-->L39: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-04-26 16:56:36,575 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash 91231, now seen corresponding path program 1 times [2025-04-26 16:56:36,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:36,575 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407857873] [2025-04-26 16:56:36,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:36,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:36,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:36,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:36,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,578 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:36,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:36,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:36,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:36,582 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash 3459, now seen corresponding path program 1 times [2025-04-26 16:56:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:36,582 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083049885] [2025-04-26 16:56:36,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:36,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:36,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:36,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:36,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,585 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:36,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:36,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:36,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:36,589 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash 87675489, now seen corresponding path program 1 times [2025-04-26 16:56:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:36,590 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767136621] [2025-04-26 16:56:36,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:36,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:36,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:36,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,597 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:36,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:36,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:36,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:36,624 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:36,624 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:36,624 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:36,624 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:36,624 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:36,624 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,624 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:36,624 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:36,624 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:56:36,625 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:36,625 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:36,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:36,643 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:36,643 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:36,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:56:36,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:36,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:36,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:56:36,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:56:36,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:36,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:36,734 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:36,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:56:36,739 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:36,739 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:36,739 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:36,739 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:36,739 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:36,739 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,739 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:36,739 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:36,739 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:56:36,739 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:36,739 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:36,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:36,765 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:36,765 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:36,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:56:36,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:56:36,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:36,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:36,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:36,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:36,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:36,779 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:36,779 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:36,784 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:36,787 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:56:36,787 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:56:36,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:36,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:36,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:56:36,793 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:36,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:56:36,796 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:36,797 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:36,797 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 16:56:36,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:56:36,803 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:36,818 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:36,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:36,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:36,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:36,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:36,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:36,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:36,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:36,832 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:36,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:56:36,844 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:56:36,844 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 206 transitions. cyclomatic complexity: 110 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:36,919 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 206 transitions. cyclomatic complexity: 110. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 284 states and 530 transitions. Complement of second has 6 states. [2025-04-26 16:56:36,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2025-04-26 16:56:36,920 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 57 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:56:36,920 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:36,920 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 57 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:56:36,920 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:36,920 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 57 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:56:36,920 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:36,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 530 transitions. [2025-04-26 16:56:36,925 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 37 [2025-04-26 16:56:36,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 169 states and 306 transitions. [2025-04-26 16:56:36,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 87 [2025-04-26 16:56:36,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2025-04-26 16:56:36,926 INFO L74 IsDeterministic]: Start isDeterministic. Operand 169 states and 306 transitions. [2025-04-26 16:56:36,927 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:36,927 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 306 transitions. [2025-04-26 16:56:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 306 transitions. [2025-04-26 16:56:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 156. [2025-04-26 16:56:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 156 states have (on average 1.8397435897435896) internal successors, (in total 287), 155 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 287 transitions. [2025-04-26 16:56:36,935 INFO L240 hiAutomatonCegarLoop]: Abstraction has 156 states and 287 transitions. [2025-04-26 16:56:36,935 INFO L438 stractBuchiCegarLoop]: Abstraction has 156 states and 287 transitions. [2025-04-26 16:56:36,935 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:56:36,935 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 287 transitions. [2025-04-26 16:56:36,936 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 37 [2025-04-26 16:56:36,936 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:36,936 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:36,936 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:56:36,937 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:56:36,937 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[66] L22-->L27: Formula: (<= v_z_3 (+ v_x4_4 v_x1_4)) InVars {x4=v_x4_4, x1=v_x1_4, z=v_z_3} OutVars{x4=v_x4_4, x1=v_x1_4, z=v_z_3} AuxVars[] AssignedVars[]" "[68] L27-->L28: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[70] L28-->L29-1: Formula: (<= 2 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-04-26 16:56:36,937 INFO L754 eck$LassoCheckResult]: Loop: "[73] L29-1-->L31: Formula: (< (+ v_x5_2 v_x3_2) v_z_4) InVars {x5=v_x5_2, x3=v_x3_2, z=v_z_4} OutVars{x5=v_x5_2, x3=v_x3_2, z=v_z_4} AuxVars[] AssignedVars[]" "[75] L31-->L32: Formula: (= (+ v_x3_4 1) v_x3_3) InVars {x3=v_x3_4} OutVars{x3=v_x3_3} AuxVars[] AssignedVars[x3]" "[76] L32-->L29-1: Formula: (= v_x5_3 (+ v_x5_4 1)) InVars {x5=v_x5_4} OutVars{x5=v_x5_3} AuxVars[] AssignedVars[x5]" [2025-04-26 16:56:36,937 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash 87651144, now seen corresponding path program 1 times [2025-04-26 16:56:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:36,937 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076879676] [2025-04-26 16:56:36,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:36,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:36,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:36,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:36,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:56:36,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:56:36,972 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076879676] [2025-04-26 16:56:36,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076879676] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:56:36,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:56:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:56:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217086716] [2025-04-26 16:56:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:56:36,976 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:56:36,976 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash 102345, now seen corresponding path program 1 times [2025-04-26 16:56:36,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:36,976 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606171954] [2025-04-26 16:56:36,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:36,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:36,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:36,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:36,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,980 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:36,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:36,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:36,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:36,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:36,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:36,998 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:36,998 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:36,998 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:36,998 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:36,998 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:36,998 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:36,998 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:36,998 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:36,998 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:56:36,998 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:36,998 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:36,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:37,023 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:37,023 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:37,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,025 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:37,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:56:37,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:37,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:37,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:37,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,047 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:37,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:56:37,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:37,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:37,135 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:37,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:37,139 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:37,139 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:37,140 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:37,140 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:37,140 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:37,140 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,140 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:37,140 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:37,140 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:56:37,140 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:37,140 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:37,140 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:37,164 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:37,164 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:37,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,174 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:37,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:56:37,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:56:37,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:37,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:37,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:37,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:37,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:37,186 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:37,186 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:37,188 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:37,190 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:56:37,190 INFO L437 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:56:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,192 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:37,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:56:37,195 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:37,197 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 16:56:37,198 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:37,198 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:37,198 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z, x5) = -1*x3 + 1*z - 1*x5 Supporting invariants [] [2025-04-26 16:56:37,203 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 16:56:37,204 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:37,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:37,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:56:37,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:56:37,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:37,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:37,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:37,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:56:37,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:56:37,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:37,233 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 16:56:37,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:56:37,257 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:56:37,257 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 156 states and 287 transitions. cyclomatic complexity: 157 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,299 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 156 states and 287 transitions. cyclomatic complexity: 157. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 312 states and 611 transitions. Complement of second has 6 states. [2025-04-26 16:56:37,301 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-04-26 16:56:37,302 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:56:37,302 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:37,302 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 16:56:37,302 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:37,302 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 52 transitions. Stem has 5 letters. Loop has 6 letters. [2025-04-26 16:56:37,303 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:37,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 312 states and 611 transitions. [2025-04-26 16:56:37,305 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-04-26 16:56:37,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 312 states to 211 states and 419 transitions. [2025-04-26 16:56:37,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2025-04-26 16:56:37,310 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2025-04-26 16:56:37,310 INFO L74 IsDeterministic]: Start isDeterministic. Operand 211 states and 419 transitions. [2025-04-26 16:56:37,311 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:37,311 INFO L218 hiAutomatonCegarLoop]: Abstraction has 211 states and 419 transitions. [2025-04-26 16:56:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 419 transitions. [2025-04-26 16:56:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2025-04-26 16:56:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 191 states have (on average 2.020942408376963) internal successors, (in total 386), 190 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 386 transitions. [2025-04-26 16:56:37,319 INFO L240 hiAutomatonCegarLoop]: Abstraction has 191 states and 386 transitions. [2025-04-26 16:56:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:56:37,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 16:56:37,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-26 16:56:37,321 INFO L87 Difference]: Start difference. First operand 191 states and 386 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:56:37,345 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2025-04-26 16:56:37,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 112 transitions. [2025-04-26 16:56:37,346 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-04-26 16:56:37,346 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 112 transitions. [2025-04-26 16:56:37,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2025-04-26 16:56:37,346 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2025-04-26 16:56:37,347 INFO L74 IsDeterministic]: Start isDeterministic. Operand 66 states and 112 transitions. [2025-04-26 16:56:37,347 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:56:37,347 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 112 transitions. [2025-04-26 16:56:37,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 112 transitions. [2025-04-26 16:56:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2025-04-26 16:56:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.696969696969697) internal successors, (in total 112), 65 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2025-04-26 16:56:37,353 INFO L240 hiAutomatonCegarLoop]: Abstraction has 66 states and 112 transitions. [2025-04-26 16:56:37,354 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-26 16:56:37,354 INFO L438 stractBuchiCegarLoop]: Abstraction has 66 states and 112 transitions. [2025-04-26 16:56:37,354 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:56:37,354 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 112 transitions. [2025-04-26 16:56:37,355 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-04-26 16:56:37,355 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:56:37,355 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:56:37,355 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:56:37,355 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:56:37,355 INFO L752 eck$LassoCheckResult]: Stem: "[61] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[88] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[66] L22-->L27: Formula: (<= v_z_3 (+ v_x4_4 v_x1_4)) InVars {x4=v_x4_4, x1=v_x1_4, z=v_z_3} OutVars{x4=v_x4_4, x1=v_x1_4, z=v_z_3} AuxVars[] AssignedVars[]" "[68] L27-->L28: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[91] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[77] L39-->L43: Formula: (<= v_z_7 v_x3_8) InVars {x3=v_x3_8, z=v_z_7} OutVars{x3=v_x3_8, z=v_z_7} AuxVars[] AssignedVars[]" "[79] L43-->L44: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[70] L28-->L29-1: Formula: (<= 2 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" "[72] L29-1-->thread1FINAL: Formula: (<= v_z_1 (+ v_x5_1 v_x3_1)) InVars {x5=v_x5_1, x3=v_x3_1, z=v_z_1} OutVars{x5=v_x5_1, x3=v_x3_1, z=v_z_1} AuxVars[] AssignedVars[]" "[81] L44-->L45-1: Formula: (<= 2 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-04-26 16:56:37,355 INFO L754 eck$LassoCheckResult]: Loop: "[83] L45-1-->L47: Formula: (< v_x1_6 v_z_8) InVars {x1=v_x1_6, z=v_z_8} OutVars{x1=v_x1_6, z=v_z_8} AuxVars[] AssignedVars[]" "[85] L47-->L45-1: Formula: (= v_x1_7 (+ v_x1_8 1)) InVars {x1=v_x1_8} OutVars{x1=v_x1_7} AuxVars[] AssignedVars[x1]" [2025-04-26 16:56:37,355 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash 919284144, now seen corresponding path program 1 times [2025-04-26 16:56:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:37,356 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454979492] [2025-04-26 16:56:37,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:37,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:56:37,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:56:37,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:37,361 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:37,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:56:37,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:56:37,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:37,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:37,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash 3619, now seen corresponding path program 1 times [2025-04-26 16:56:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:37,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100258014] [2025-04-26 16:56:37,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:37,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:37,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:37,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:37,367 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:37,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:37,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:37,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:37,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:37,370 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:37,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1331197934, now seen corresponding path program 1 times [2025-04-26 16:56:37,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:56:37,370 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878987500] [2025-04-26 16:56:37,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:56:37,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:56:37,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:56:37,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:56:37,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:37,374 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:56:37,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:56:37,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:56:37,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:56:37,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:56:37,388 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:37,388 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:37,389 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:37,389 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:37,389 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:56:37,389 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,389 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:37,389 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:37,389 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:56:37,389 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:37,389 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:37,389 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:37,406 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:37,406 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:56:37,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,408 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 16:56:37,409 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 16:56:37,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:56:37,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:37,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:56:37,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,429 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 16:56:37,429 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 16:56:37,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:56:37,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:56:37,496 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:56:37,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 16:56:37,500 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:56:37,500 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:56:37,500 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:56:37,500 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:56:37,500 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:56:37,500 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,500 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:56:37,500 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:56:37,500 INFO L132 ssoRankerPreferences]: Filename of dumped script: c3-barrier-2t.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:56:37,500 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:56:37,500 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:56:37,501 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:56:37,520 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:56:37,520 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:56:37,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,525 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:37,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:56:37,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:56:37,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:56:37,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:56:37,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:56:37,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:56:37,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:56:37,539 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:56:37,539 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:56:37,540 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:56:37,543 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:56:37,543 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:56:37,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:56:37,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:56:37,545 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:56:37,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:56:37,546 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:56:37,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:56:37,549 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:56:37,549 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:56:37,549 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:56:37,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:56:37,556 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:56:37,568 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:56:37,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:56:37,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:56:37,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:37,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:56:37,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:37,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:56:37,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:56:37,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:56:37,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:56:37,592 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:56:37,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:56:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:56:37,603 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:56:37,603 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 112 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (in total 12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,636 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 112 transitions. cyclomatic complexity: 57. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (in total 12), 3 states have internal predecessors, (12), 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 87 states and 144 transitions. Complement of second has 6 states. [2025-04-26 16:56:37,637 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:56:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (in total 12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:56:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2025-04-26 16:56:37,637 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 10 letters. Loop has 2 letters. [2025-04-26 16:56:37,638 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:37,638 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 12 letters. Loop has 2 letters. [2025-04-26 16:56:37,638 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:37,638 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 10 letters. Loop has 4 letters. [2025-04-26 16:56:37,638 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:56:37,638 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 144 transitions. [2025-04-26 16:56:37,638 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:37,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 0 states and 0 transitions. [2025-04-26 16:56:37,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:56:37,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:56:37,639 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:56:37,639 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:56:37,639 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:37,639 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:37,639 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:56:37,639 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:56:37,639 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:56:37,639 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:56:37,639 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:56:37,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:56:37,652 INFO L201 PluginConnector]: Adding new model c3-barrier-2t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:56:37 BoogieIcfgContainer [2025-04-26 16:56:37,652 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:56:37,653 INFO L158 Benchmark]: Toolchain (without parser) took 2434.68ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 86.5MB in the beginning and 27.3MB in the end (delta: 59.2MB). Peak memory consumption was 49.9MB. Max. memory is 8.0GB. [2025-04-26 16:56:37,653 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:37,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.95ms. Allocated memory is still 155.2MB. Free memory was 86.4MB in the beginning and 84.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:56:37,655 INFO L158 Benchmark]: Boogie Preprocessor took 18.87ms. Allocated memory is still 155.2MB. Free memory was 84.5MB in the beginning and 83.5MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:56:37,655 INFO L158 Benchmark]: RCFGBuilder took 174.01ms. Allocated memory is still 155.2MB. Free memory was 83.5MB in the beginning and 74.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:56:37,656 INFO L158 Benchmark]: BuchiAutomizer took 2193.11ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 74.2MB in the beginning and 27.3MB in the end (delta: 47.0MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. [2025-04-26 16:56:37,657 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.95ms. Allocated memory is still 155.2MB. Free memory was 86.4MB in the beginning and 84.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 18.87ms. Allocated memory is still 155.2MB. Free memory was 84.5MB in the beginning and 83.5MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 174.01ms. Allocated memory is still 155.2MB. Free memory was 83.5MB in the beginning and 74.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2193.11ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 74.2MB in the beginning and 27.3MB in the end (delta: 47.0MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 100 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 64ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 199, Number of transitions in reduction automaton: 161, Number of states in reduction automaton: 100, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x4 + -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x5 + -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:56:37,669 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...