/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/buchiAutomizer/concurrent-automaton-noLbe.epf --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:52:00,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:52:00,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:52:00,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:52:00,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:52:00,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:52:00,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:52:00,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:52:00,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:52:00,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:52:00,524 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:52:00,524 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:52:00,524 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:52:00,524 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:52:00,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:52:00,525 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:52:00,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:52:00,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:52:00,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:52:00,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:52:00,526 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:52:00,526 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:52:00,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:52:00,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:52:00,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:52:00,764 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:52:00,764 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:52:00,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl [2025-02-17 22:52:00,768 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc4.c.bpl' [2025-02-17 22:52:00,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:52:00,785 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:52:00,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:52:00,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:52:00,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:52:00,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,805 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:52:00,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:52:00,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:52:00,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:52:00,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:52:00,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,816 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:52:00,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:52:00,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:52:00,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:52:00,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/1) ... [2025-02-17 22:52:00,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:00,849 INFO L229 MonitoredProcess]: Starting monitored process 1 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) [2025-02-17 22:52:00,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:52:00,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:52:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:52:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:52:00,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:52:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:52:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:52:00,875 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:52:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:52:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:52:00,875 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:52:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:52:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:52:00,875 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:52:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:52:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:52:00,877 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:52:00,912 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:52:00,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:52:00,998 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:52:00,999 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:52:01,009 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:52:01,010 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:52:01,011 INFO L201 PluginConnector]: Adding new model pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:52:01 BoogieIcfgContainer [2025-02-17 22:52:01,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:52:01,012 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:52:01,012 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:52:01,017 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:52:01,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:52:01,017 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:52:00" (1/2) ... [2025-02-17 22:52:01,019 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37ac2739 and model type pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:52:01, skipping insertion in model container [2025-02-17 22:52:01,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:52:01,019 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:52:01" (2/2) ... [2025-02-17 22:52:01,020 INFO L363 chiAutomizerObserver]: Analyzing ICFG pc4.c.bpl [2025-02-17 22:52:01,078 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:52:01,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:52:01,136 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-17 22:52:01,137 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:52:01,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:52:01,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:52:01,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-02-17 22:52:01,149 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:52:01,913 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:52:01,913 INFO L101 AmpleReduction]: Number of pruned transitions: 2336, Number of non-trivial ample sets: 2837 [2025-02-17 22:52:01,913 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 1847 [2025-02-17 22:52:01,922 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:52:01,922 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:52:01,923 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:52:01,923 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:52:01,923 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:52:01,923 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:52:01,923 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:52:01,923 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:52:01,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1784 states, 1783 states have (on average 2.6556365675827256) internal successors, (4735), 1783 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:02,004 INFO L131 ngComponentsAnalysis]: Automaton has 183 accepting balls. 1305 [2025-02-17 22:52:02,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:02,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:02,010 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:52:02,010 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:02,010 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:52:02,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 1784 states, 1783 states have (on average 2.6556365675827256) internal successors, (4735), 1783 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:02,047 INFO L131 ngComponentsAnalysis]: Automaton has 183 accepting balls. 1305 [2025-02-17 22:52:02,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:02,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:02,047 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:52:02,047 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:02,053 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-02-17 22:52:02,053 INFO L754 eck$LassoCheckResult]: Loop: "[83] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[85] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[87] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:02,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash 3397, now seen corresponding path program 1 times [2025-02-17 22:52:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:02,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774539707] [2025-02-17 22:52:02,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:02,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:02,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:52:02,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:52:02,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:02,118 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:02,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:52:02,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:52:02,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:02,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:02,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:02,139 INFO L85 PathProgramCache]: Analyzing trace with hash 112276, now seen corresponding path program 1 times [2025-02-17 22:52:02,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:02,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650573936] [2025-02-17 22:52:02,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:02,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:02,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:02,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:02,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:02,148 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:02,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:02,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:02,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:02,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:02,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash 101282512, now seen corresponding path program 1 times [2025-02-17 22:52:02,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:02,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240553488] [2025-02-17 22:52:02,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:02,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:02,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:02,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:02,165 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:02,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:02,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:02,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:02,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:02,207 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:02,208 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:02,208 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:02,209 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:02,209 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:02,209 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,209 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:02,209 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:02,210 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:52:02,210 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:02,210 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:02,218 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:02,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:02,295 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:02,296 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:02,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,302 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2025-02-17 22:52:02,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:52:02,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:02,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:02,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:52:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,358 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) [2025-02-17 22:52:02,365 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 [2025-02-17 22:52:02,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:02,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:02,402 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:52:02,402 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:52:02,408 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 [2025-02-17 22:52:02,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,410 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) [2025-02-17 22:52:02,412 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 [2025-02-17 22:52:02,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:02,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:02,430 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 [2025-02-17 22:52:02,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,433 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) [2025-02-17 22:52:02,435 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 [2025-02-17 22:52:02,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:02,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:02,506 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:02,511 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 [2025-02-17 22:52:02,511 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:02,511 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:02,511 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:02,511 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:02,511 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:02,511 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,511 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:02,511 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:02,511 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:52:02,511 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:02,511 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:02,512 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:02,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:02,543 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:02,546 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:02,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,549 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) [2025-02-17 22:52:02,551 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 [2025-02-17 22:52:02,553 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 [2025-02-17 22:52:02,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:02,563 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:02,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:02,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:02,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:02,568 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:02,568 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:02,571 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:52:02,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:02,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,579 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) [2025-02-17 22:52:02,580 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 [2025-02-17 22:52:02,581 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 [2025-02-17 22:52:02,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:02,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:02,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:02,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:02,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:02,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:02,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:02,594 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:02,598 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:02,598 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:52:02,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:02,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:02,601 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) [2025-02-17 22:52:02,603 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 [2025-02-17 22:52:02,604 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:02,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:02,604 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:02,605 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-02-17 22:52:02,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:02,617 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:02,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:02,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:52:02,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:52:02,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:02,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:02,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:02,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:02,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:02,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:02,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:02,664 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:02,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:52:02,727 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 [2025-02-17 22:52:02,733 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 1784 states, 1783 states have (on average 2.6556365675827256) internal successors, (4735), 1783 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:02,882 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 1784 states, 1783 states have (on average 2.6556365675827256) internal successors, (4735), 1783 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4283 states and 12479 transitions. Complement of second has 6 states. [2025-02-17 22:52:02,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:52:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-17 22:52:02,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:52:02,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:02,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:52:02,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:02,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:52:02,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:02,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4283 states and 12479 transitions. [2025-02-17 22:52:02,944 INFO L131 ngComponentsAnalysis]: Automaton has 155 accepting balls. 885 [2025-02-17 22:52:02,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4283 states to 3018 states and 9338 transitions. [2025-02-17 22:52:02,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1569 [2025-02-17 22:52:03,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2047 [2025-02-17 22:52:03,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3018 states and 9338 transitions. [2025-02-17 22:52:03,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:03,002 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3018 states and 9338 transitions. [2025-02-17 22:52:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states and 9338 transitions. [2025-02-17 22:52:03,134 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 [2025-02-17 22:52:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2552. [2025-02-17 22:52:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2552 states have (on average 3.043103448275862) internal successors, (7766), 2551 states have internal predecessors, (7766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 7766 transitions. [2025-02-17 22:52:03,162 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2552 states and 7766 transitions. [2025-02-17 22:52:03,162 INFO L432 stractBuchiCegarLoop]: Abstraction has 2552 states and 7766 transitions. [2025-02-17 22:52:03,162 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:52:03,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2552 states and 7766 transitions. [2025-02-17 22:52:03,179 INFO L131 ngComponentsAnalysis]: Automaton has 155 accepting balls. 885 [2025-02-17 22:52:03,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:03,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:03,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:52:03,180 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:03,180 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[82] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[84] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" [2025-02-17 22:52:03,180 INFO L754 eck$LassoCheckResult]: Loop: "[89] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[91] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[93] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:03,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 101312207, now seen corresponding path program 1 times [2025-02-17 22:52:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238369122] [2025-02-17 22:52:03,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:03,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:03,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:03,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,185 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:03,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:03,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:03,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:03,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash 118234, now seen corresponding path program 1 times [2025-02-17 22:52:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:03,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103574886] [2025-02-17 22:52:03,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:03,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:03,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:03,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,192 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:03,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:03,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:03,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:03,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1169961908, now seen corresponding path program 1 times [2025-02-17 22:52:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:03,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380828385] [2025-02-17 22:52:03,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:03,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:03,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:52:03,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:52:03,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,198 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:03,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:52:03,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:52:03,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:03,228 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:03,229 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:03,229 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:03,229 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:03,229 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:03,229 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,229 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:03,229 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:03,229 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:52:03,229 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:03,229 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:03,229 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:03,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:03,259 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:03,259 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:03,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,262 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) [2025-02-17 22:52:03,263 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 [2025-02-17 22:52:03,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:03,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:03,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:03,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,283 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) [2025-02-17 22:52:03,284 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 [2025-02-17 22:52:03,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:03,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:03,320 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:52:03,320 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-02-17 22:52:03,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,328 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) [2025-02-17 22:52:03,329 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 [2025-02-17 22:52:03,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:03,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:03,349 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 [2025-02-17 22:52:03,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,351 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) [2025-02-17 22:52:03,354 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 [2025-02-17 22:52:03,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:03,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:03,421 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:03,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:52:03,425 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:03,425 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:03,425 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:03,425 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:03,425 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:03,426 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,426 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:03,426 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:03,426 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:52:03,426 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:03,426 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:03,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:03,430 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:03,459 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:03,459 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,461 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) [2025-02-17 22:52:03,463 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 [2025-02-17 22:52:03,464 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 [2025-02-17 22:52:03,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:03,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:03,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:03,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:03,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:03,475 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:03,475 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:03,477 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:52:03,485 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 [2025-02-17 22:52:03,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,487 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) [2025-02-17 22:52:03,488 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 [2025-02-17 22:52:03,490 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 [2025-02-17 22:52:03,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:03,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:03,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:03,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:03,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:03,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:03,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:03,504 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:03,506 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:03,506 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:52:03,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:03,508 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) [2025-02-17 22:52:03,510 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 [2025-02-17 22:52:03,511 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:03,511 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:03,511 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:03,511 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-02-17 22:52:03,516 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 [2025-02-17 22:52:03,517 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:03,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:03,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:52:03,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:52:03,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:03,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:03,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:03,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:03,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:03,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:03,543 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:03,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:52:03,568 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 [2025-02-17 22:52:03,569 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2552 states and 7766 transitions. cyclomatic complexity: 5442 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:03,664 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2552 states and 7766 transitions. cyclomatic complexity: 5442. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4300 states and 13580 transitions. Complement of second has 6 states. [2025-02-17 22:52:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:52:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-17 22:52:03,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 92 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:52:03,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:03,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 92 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:52:03,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:03,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 92 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:52:03,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:03,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4300 states and 13580 transitions. [2025-02-17 22:52:03,718 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 [2025-02-17 22:52:03,738 INFO L131 ngComponentsAnalysis]: Automaton has 163 accepting balls. 785 [2025-02-17 22:52:03,773 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4300 states to 3713 states and 11856 transitions. [2025-02-17 22:52:03,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1801 [2025-02-17 22:52:03,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2247 [2025-02-17 22:52:03,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3713 states and 11856 transitions. [2025-02-17 22:52:03,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:03,778 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3713 states and 11856 transitions. [2025-02-17 22:52:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states and 11856 transitions. [2025-02-17 22:52:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3172. [2025-02-17 22:52:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 3172 states have (on average 3.290983606557377) internal successors, (10439), 3171 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 10439 transitions. [2025-02-17 22:52:03,891 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3172 states and 10439 transitions. [2025-02-17 22:52:03,891 INFO L432 stractBuchiCegarLoop]: Abstraction has 3172 states and 10439 transitions. [2025-02-17 22:52:03,891 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:52:03,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3172 states and 10439 transitions. [2025-02-17 22:52:03,904 INFO L131 ngComponentsAnalysis]: Automaton has 163 accepting balls. 785 [2025-02-17 22:52:03,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:03,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:03,905 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:52:03,905 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:03,906 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[83] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[117] L15-->$Ultimate##0: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[94] $Ultimate##0-->L50-1: Formula: (< 1 v_f_5) InVars {f=v_f_5} OutVars{f=v_f_5} AuxVars[] AssignedVars[]" [2025-02-17 22:52:03,906 INFO L754 eck$LassoCheckResult]: Loop: "[96] L50-1-->L52: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[98] L52-->L53: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[99] L53-->L50-1: Formula: (= (+ v_c_5 1) v_c_6) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:03,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1154286801, now seen corresponding path program 1 times [2025-02-17 22:52:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069894765] [2025-02-17 22:52:03,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:03,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:52:03,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:52:03,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:52:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:52:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069894765] [2025-02-17 22:52:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069894765] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:52:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:52:03,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-17 22:52:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016682929] [2025-02-17 22:52:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:52:03,968 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:52:03,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 125184, now seen corresponding path program 1 times [2025-02-17 22:52:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547956654] [2025-02-17 22:52:03,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:03,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:03,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:03,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,975 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:03,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:03,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:03,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:03,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:03,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:03,998 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:03,999 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:03,999 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:03,999 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:03,999 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:03,999 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:03,999 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:03,999 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:03,999 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:52:03,999 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:03,999 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:03,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:04,004 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:04,028 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:04,028 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:04,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:04,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:04,031 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) [2025-02-17 22:52:04,032 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 [2025-02-17 22:52:04,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:04,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:04,054 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 [2025-02-17 22:52:04,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:04,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:04,056 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) [2025-02-17 22:52:04,058 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 [2025-02-17 22:52:04,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:04,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:04,129 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:04,134 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 [2025-02-17 22:52:04,134 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:04,135 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:04,135 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:04,135 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:04,135 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:04,135 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:04,135 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:04,135 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:04,135 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:52:04,135 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:04,135 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:04,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:04,142 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:04,162 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:04,163 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:04,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:04,166 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) [2025-02-17 22:52:04,167 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 [2025-02-17 22:52:04,168 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 [2025-02-17 22:52:04,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:04,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:04,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:04,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:04,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:04,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:04,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:04,182 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:04,185 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:04,185 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:52:04,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:04,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:04,187 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:04,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:52:04,190 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:04,190 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:04,190 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:04,190 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-02-17 22:52:04,196 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 [2025-02-17 22:52:04,197 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:04,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:04,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:52:04,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:52:04,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:04,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:04,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:04,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:04,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:04,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:04,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:04,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:04,226 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:04,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:52:04,251 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 [2025-02-17 22:52:04,251 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3172 states and 10439 transitions. cyclomatic complexity: 7562 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:04,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:04,475 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3172 states and 10439 transitions. cyclomatic complexity: 7562. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8279 states and 30186 transitions. Complement of second has 6 states. [2025-02-17 22:52:04,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:52:04,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-17 22:52:04,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 96 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:52:04,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:04,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 96 transitions. Stem has 9 letters. Loop has 3 letters. [2025-02-17 22:52:04,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:04,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 96 transitions. Stem has 6 letters. Loop has 6 letters. [2025-02-17 22:52:04,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:04,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8279 states and 30186 transitions. [2025-02-17 22:52:04,572 INFO L131 ngComponentsAnalysis]: Automaton has 111 accepting balls. 359 [2025-02-17 22:52:04,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8279 states to 5622 states and 20982 transitions. [2025-02-17 22:52:04,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1717 [2025-02-17 22:52:04,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2238 [2025-02-17 22:52:04,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5622 states and 20982 transitions. [2025-02-17 22:52:04,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:04,644 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5622 states and 20982 transitions. [2025-02-17 22:52:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5622 states and 20982 transitions. [2025-02-17 22:52:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5622 to 4967. [2025-02-17 22:52:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 4967 states have (on average 3.804308435675458) internal successors, (18896), 4966 states have internal predecessors, (18896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 18896 transitions. [2025-02-17 22:52:04,797 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4967 states and 18896 transitions. [2025-02-17 22:52:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:52:04,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:52:04,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:52:04,800 INFO L87 Difference]: Start difference. First operand 4967 states and 18896 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:52:04,878 INFO L93 Difference]: Finished difference Result 2563 states and 8683 transitions. [2025-02-17 22:52:04,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2563 states and 8683 transitions. [2025-02-17 22:52:04,892 INFO L131 ngComponentsAnalysis]: Automaton has 80 accepting balls. 240 [2025-02-17 22:52:04,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2563 states to 2557 states and 8672 transitions. [2025-02-17 22:52:04,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 953 [2025-02-17 22:52:04,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 953 [2025-02-17 22:52:04,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2557 states and 8672 transitions. [2025-02-17 22:52:04,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:52:04,924 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2557 states and 8672 transitions. [2025-02-17 22:52:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states and 8672 transitions. [2025-02-17 22:52:04,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2557. [2025-02-17 22:52:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2557 states have (on average 3.3914743840438013) internal successors, (8672), 2556 states have internal predecessors, (8672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 8672 transitions. [2025-02-17 22:52:04,975 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2557 states and 8672 transitions. [2025-02-17 22:52:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:52:04,975 INFO L432 stractBuchiCegarLoop]: Abstraction has 2557 states and 8672 transitions. [2025-02-17 22:52:04,975 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:52:04,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2557 states and 8672 transitions. [2025-02-17 22:52:04,985 INFO L131 ngComponentsAnalysis]: Automaton has 80 accepting balls. 240 [2025-02-17 22:52:04,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:52:04,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:52:04,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:52:04,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:52:04,987 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[111] L14-->L27: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[114] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[83] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[117] L15-->$Ultimate##0: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[85] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[87] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" "[82] L27-->L32: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[84] L32-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[108] L16-->$Ultimate##0: Formula: (and (= 4 v_thread4Thread1of1ForFork0_thidvar3_2) (= 4 v_thread4Thread1of1ForFork0_thidvar1_2) (= 4 v_thread4Thread1of1ForFork0_thidvar2_2) (= 4 v_thread4Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread4Thread1of1ForFork0_thidvar3=v_thread4Thread1of1ForFork0_thidvar3_2, thread4Thread1of1ForFork0_thidvar2=v_thread4Thread1of1ForFork0_thidvar2_2, thread4Thread1of1ForFork0_thidvar1=v_thread4Thread1of1ForFork0_thidvar1_2, thread4Thread1of1ForFork0_thidvar0=v_thread4Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork0_thidvar3, thread4Thread1of1ForFork0_thidvar2, thread4Thread1of1ForFork0_thidvar1, thread4Thread1of1ForFork0_thidvar0]" "[89] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[100] $Ultimate##0-->L61-1: Formula: (< 1 v_f_7) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" [2025-02-17 22:52:04,987 INFO L754 eck$LassoCheckResult]: Loop: "[102] L61-1-->L63: Formula: (< v_y2_1 v_z2_3) InVars {z2=v_z2_3, y2=v_y2_1} OutVars{z2=v_z2_3, y2=v_y2_1} AuxVars[] AssignedVars[]" "[104] L63-->L64: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[105] L64-->L61-1: Formula: (= v_c_8 (+ v_c_7 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-02-17 22:52:04,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1025014724, now seen corresponding path program 1 times [2025-02-17 22:52:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499867383] [2025-02-17 22:52:04,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:04,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-17 22:52:04,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-17 22:52:04,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:04,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:52:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:52:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499867383] [2025-02-17 22:52:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499867383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:52:05,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:52:05,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:52:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588269218] [2025-02-17 22:52:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:52:05,037 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:52:05,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 131142, now seen corresponding path program 1 times [2025-02-17 22:52:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:52:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958501608] [2025-02-17 22:52:05,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:52:05,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:52:05,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:05,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:05,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:05,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:05,042 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:52:05,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:05,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:05,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:05,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:52:05,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:52:05,070 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:05,071 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:05,071 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:05,071 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:05,071 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:52:05,071 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,071 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:05,071 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:05,071 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:52:05,071 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:05,071 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:05,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:05,074 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:05,095 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:05,095 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:52:05,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,097 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:52:05,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:05,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:05,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:52:05,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,118 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:52:05,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:05,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:05,145 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:52:05,145 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-02-17 22:52:05,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:52:05,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,153 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:52:05,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:52:05,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:05,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-02-17 22:52:05,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,176 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:52:05,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:52:05,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:52:05,245 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:52:05,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-02-17 22:52:05,250 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:52:05,250 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:52:05,250 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:52:05,250 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:52:05,250 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:52:05,250 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,250 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:52:05,250 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:52:05,250 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:52:05,250 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:52:05,250 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:52:05,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:05,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:52:05,277 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:52:05,277 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:52:05,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,280 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:52:05,283 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 [2025-02-17 22:52:05,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:05,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:05,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:05,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:05,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:05,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:05,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:05,296 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:52:05,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-02-17 22:52:05,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,306 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:52:05,308 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 [2025-02-17 22:52:05,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:52:05,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:52:05,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:52:05,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:52:05,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:52:05,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:52:05,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:52:05,321 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:52:05,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:52:05,323 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:52:05,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:52:05,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:52:05,326 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:52:05,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:52:05,329 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:52:05,329 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:52:05,329 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:52:05,330 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-02-17 22:52:05,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-17 22:52:05,336 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:52:05,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:52:05,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-17 22:52:05,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-17 22:52:05,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:05,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:05,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:52:05,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:05,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:52:05,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:52:05,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:52:05,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:52:05,381 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:52:05,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:52:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:52:05,419 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 [2025-02-17 22:52:05,419 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2557 states and 8672 transitions. cyclomatic complexity: 6370 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:05,481 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2557 states and 8672 transitions. cyclomatic complexity: 6370. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 5900 states and 21482 transitions. Complement of second has 6 states. [2025-02-17 22:52:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:52:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-02-17 22:52:05,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 91 transitions. Stem has 12 letters. Loop has 3 letters. [2025-02-17 22:52:05,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:05,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 91 transitions. Stem has 15 letters. Loop has 3 letters. [2025-02-17 22:52:05,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:05,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 91 transitions. Stem has 12 letters. Loop has 6 letters. [2025-02-17 22:52:05,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:52:05,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5900 states and 21482 transitions. [2025-02-17 22:52:05,519 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:52:05,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5900 states to 0 states and 0 transitions. [2025-02-17 22:52:05,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:52:05,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:52:05,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:52:05,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:52:05,519 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:05,519 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:05,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:52:05,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:52:05,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:52:05,520 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:52:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:52:05,520 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:52:05,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:52:05,520 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:52:05,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:52:05,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:52:05,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:52:05,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:52:05,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:52:05,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:05,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:05,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:52:05,521 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:52:05,521 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:52:05,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:52:05,521 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:52:05,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:52:05,526 INFO L201 PluginConnector]: Adding new model pc4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:52:05 BoogieIcfgContainer [2025-02-17 22:52:05,526 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:52:05,527 INFO L158 Benchmark]: Toolchain (without parser) took 4743.36ms. Allocated memory was 159.4MB in the beginning and 297.8MB in the end (delta: 138.4MB). Free memory was 86.6MB in the beginning and 74.4MB in the end (delta: 12.2MB). Peak memory consumption was 152.0MB. Max. memory is 8.0GB. [2025-02-17 22:52:05,527 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 159.4MB. Free memory was 87.5MB in the beginning and 87.3MB in the end (delta: 199.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:52:05,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.60ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 85.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:52:05,527 INFO L158 Benchmark]: Boogie Preprocessor took 14.01ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 84.4MB in the end (delta: 862.2kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:52:05,527 INFO L158 Benchmark]: RCFGBuilder took 188.68ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 75.1MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-02-17 22:52:05,528 INFO L158 Benchmark]: BuchiAutomizer took 4514.06ms. Allocated memory was 159.4MB in the beginning and 297.8MB in the end (delta: 138.4MB). Free memory was 75.1MB in the beginning and 74.4MB in the end (delta: 785.4kB). Peak memory consumption was 139.4MB. Max. memory is 8.0GB. [2025-02-17 22:52:05,529 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 159.4MB. Free memory was 87.5MB in the beginning and 87.3MB in the end (delta: 199.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.60ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 85.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 14.01ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 84.4MB in the end (delta: 862.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 188.68ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 75.1MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 4514.06ms. Allocated memory was 159.4MB in the beginning and 297.8MB in the end (delta: 138.4MB). Free memory was 75.1MB in the beginning and 74.4MB in the end (delta: 785.4kB). Peak memory consumption was 139.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z2 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 1662 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.4s 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, 276 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 272 mSDsluCounter, 399 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 200 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.8s InitialAbstraction: Time to compute Ample Reduction [ms]: 814, Trivial Ample Sets caused by loops: 1847, Number of non-trivial ample sets: 2837, Number of pruned transitions: 2336, Number of transitions in reduction automaton: 4735, Number of states in reduction automaton: 1784, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:52:05,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:52:05,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...