/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 -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/pp6.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:47:35,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:47:35,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:47:35,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:47:35,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:47:35,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:47:35,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:47:35,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:47:35,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:47:35,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:47:35,885 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:47:35,886 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:47:35,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:47:35,886 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:47:35,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:47:35,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:47:35,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:47:35,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:47:35,887 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:47:35,887 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:47:36,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:47:36,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:47:36,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:47:36,098 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:47:36,098 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:47:36,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pp6.c.bpl [2025-02-17 22:47:36,102 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pp6.c.bpl' [2025-02-17 22:47:36,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:47:36,120 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:47:36,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:36,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:47:36,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:47:36,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,140 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:47:36,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:36,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:47:36,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:47:36,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:47:36,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,149 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:47:36,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:47:36,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:47:36,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:47:36,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/1) ... [2025-02-17 22:47:36,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:36,183 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 22:47:36,185 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 22:47:36,206 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:47:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:47:36,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:47:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:47:36,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:47:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:47:36,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:47:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:47:36,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:47:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:47:36,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:47:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:47:36,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-02-17 22:47:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-17 22:47:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-17 22:47:36,208 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 22:47:36,250 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:47:36,251 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:47:36,370 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:47:36,370 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:47:36,382 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:47:36,382 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:47:36,383 INFO L201 PluginConnector]: Adding new model pp6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:36 BoogieIcfgContainer [2025-02-17 22:47:36,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:47:36,385 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:47:36,385 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:47:36,388 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:47:36,389 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:36,389 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:36" (1/2) ... [2025-02-17 22:47:36,390 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b760590 and model type pp6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:47:36, skipping insertion in model container [2025-02-17 22:47:36,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:36,390 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:36" (2/2) ... [2025-02-17 22:47:36,391 INFO L363 chiAutomizerObserver]: Analyzing ICFG pp6.c.bpl [2025-02-17 22:47:36,473 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-02-17 22:47:36,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 166 flow [2025-02-17 22:47:36,538 INFO L124 PetriNetUnfolderBase]: 6/50 cut-off events. [2025-02-17 22:47:36,541 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-17 22:47:36,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 50 events. 6/50 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-02-17 22:47:36,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 166 flow [2025-02-17 22:47:36,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 136 flow [2025-02-17 22:47:36,562 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:47:36,562 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:47:36,562 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:47:36,562 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:47:36,562 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:47:36,563 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:47:36,563 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:47:36,563 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:47:36,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:47:41,527 INFO L131 ngComponentsAnalysis]: Automaton has 5369 accepting balls. 63861 [2025-02-17 22:47:41,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:41,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:41,533 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:41,533 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:41,533 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:47:41,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 65319 states, but on-demand construction may add more states [2025-02-17 22:47:43,029 INFO L131 ngComponentsAnalysis]: Automaton has 5369 accepting balls. 63861 [2025-02-17 22:47:43,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:43,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:43,032 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:43,033 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:47:43,037 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" [2025-02-17 22:47:43,037 INFO L754 eck$LassoCheckResult]: Loop: "[119] L34-->L36: 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[]" "[121] L36-->L37: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[123] L37-->L34: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-02-17 22:47:43,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 3913, now seen corresponding path program 1 times [2025-02-17 22:47:43,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:43,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784447224] [2025-02-17 22:47:43,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:43,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:43,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:43,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:43,099 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:43,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:43,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:43,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:43,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:43,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 148024, now seen corresponding path program 1 times [2025-02-17 22:47:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:43,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457775553] [2025-02-17 22:47:43,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:43,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:43,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:43,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:43,130 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:43,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:43,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:43,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:43,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:43,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:43,139 INFO L85 PathProgramCache]: Analyzing trace with hash 116690416, now seen corresponding path program 1 times [2025-02-17 22:47:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:43,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908237049] [2025-02-17 22:47:43,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:43,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:43,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:43,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:43,149 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:43,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:43,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:43,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:43,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:43,211 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:43,212 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:43,212 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:43,212 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:43,212 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:43,212 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,212 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:43,212 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:43,212 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:43,212 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:43,212 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:43,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:43,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:43,277 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:43,277 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:43,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,281 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 22:47:43,282 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 22:47:43,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:43,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:43,299 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 22:47:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,301 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 22:47:43,302 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 22:47:43,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:43,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:43,337 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:43,337 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 22:47:43,343 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 22:47:43,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,345 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 22:47:43,346 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 22:47:43,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:43,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:43,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:47:43,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,365 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 22:47:43,367 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 22:47:43,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:43,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:43,438 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:43,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:43,443 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:43,443 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:43,444 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:43,444 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:43,444 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:43,444 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,444 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:43,444 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:43,444 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:43,444 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:43,444 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:43,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:43,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:43,482 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:43,485 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:43,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,487 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 22:47:43,488 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 22:47:43,489 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 22:47:43,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:43,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:43,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:43,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:43,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:43,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:43,503 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:43,505 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:43,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:47:43,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,511 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 22:47:43,513 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 22:47:43,513 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 22:47:43,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:43,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:43,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:43,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:43,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:43,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:43,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:43,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:43,532 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:43,532 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:43,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:43,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:43,537 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 22:47:43,539 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 22:47:43,539 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:43,539 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:43,539 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:43,540 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-02-17 22:47:43,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:47:43,547 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:43,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:43,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:43,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:43,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:43,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:43,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:43,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:43,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:43,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:43,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:43,594 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:43,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:43,639 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 22:47:43,719 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 22:47:43,727 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 22:47:43,730 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 65319 states, but on-demand construction may add more states 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 22:47:47,309 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 65319 states, but on-demand construction may add more states. 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 158630 states and 999062 transitions. Complement of second has 6 states. [2025-02-17 22:47:47,311 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 22:47:47,315 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 22:47:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2025-02-17 22:47:47,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:47:47,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:47,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:47:47,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:47,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 123 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:47:47,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:47,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158630 states and 999062 transitions. [2025-02-17 22:47:51,116 INFO L131 ngComponentsAnalysis]: Automaton has 7007 accepting balls. 62769 [2025-02-17 22:47:53,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158630 states to 118024 states and 756951 transitions. [2025-02-17 22:47:53,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63496 [2025-02-17 22:47:54,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 81673 [2025-02-17 22:47:54,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118024 states and 756951 transitions. [2025-02-17 22:47:54,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:54,163 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118024 states and 756951 transitions. [2025-02-17 22:47:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118024 states and 756951 transitions. [2025-02-17 22:47:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118024 to 99848. [2025-02-17 22:47:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99848 states, 99848 states have (on average 6.404024116657319) internal successors, (639429), 99847 states have internal predecessors, (639429), 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 22:48:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99848 states to 99848 states and 639429 transitions. [2025-02-17 22:48:00,148 INFO L240 hiAutomatonCegarLoop]: Abstraction has 99848 states and 639429 transitions. [2025-02-17 22:48:00,148 INFO L432 stractBuchiCegarLoop]: Abstraction has 99848 states and 639429 transitions. [2025-02-17 22:48:00,148 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:00,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99848 states and 639429 transitions. [2025-02-17 22:48:01,324 INFO L131 ngComponentsAnalysis]: Automaton has 7007 accepting balls. 62769 [2025-02-17 22:48:01,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:01,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:01,327 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:01,327 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:01,327 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[165] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" [2025-02-17 22:48:01,327 INFO L754 eck$LassoCheckResult]: Loop: "[125] L45-->L47: 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[]" "[127] L47-->L48: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[129] L48-->L45: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-02-17 22:48:01,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 121468, now seen corresponding path program 1 times [2025-02-17 22:48:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258192623] [2025-02-17 22:48:01,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:01,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:01,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:01,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:01,331 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:01,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:01,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:01,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:01,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:01,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash 153982, now seen corresponding path program 1 times [2025-02-17 22:48:01,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:01,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831190570] [2025-02-17 22:48:01,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:01,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:01,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:01,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:01,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:01,336 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:01,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:01,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:01,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:01,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:01,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -676189917, now seen corresponding path program 1 times [2025-02-17 22:48:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673352433] [2025-02-17 22:48:01,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:01,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:01,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:01,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:01,343 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:01,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:01,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:01,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:01,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:01,381 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:01,382 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:01,382 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:01,382 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:01,382 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:01,382 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,382 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:01,382 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:01,382 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:01,382 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:01,382 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:01,382 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:01,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:01,414 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:01,415 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:01,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,417 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 22:48:01,418 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 22:48:01,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:01,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:01,436 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 22:48:01,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,438 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 22:48:01,439 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 22:48:01,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:01,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:01,474 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:01,474 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 22:48:01,480 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 22:48:01,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,483 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 22:48:01,483 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 22:48:01,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:01,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:01,501 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 22:48:01,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,503 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 22:48:01,504 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 22:48:01,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:01,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:01,568 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:01,573 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 22:48:01,573 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:01,573 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:01,573 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:01,573 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:01,573 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:01,573 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,573 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:01,573 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:01,573 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:01,573 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:01,573 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:01,574 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:01,577 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:01,603 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:01,603 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:01,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,605 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 22:48:01,605 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 22:48:01,606 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 22:48:01,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:01,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:01,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:01,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:01,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:01,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:01,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:01,617 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:01,622 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 22:48:01,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,623 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 22:48:01,624 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 22:48:01,625 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 22:48:01,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:01,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:01,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:01,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:01,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:01,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:01,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:01,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:01,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:01,639 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:01,641 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 22:48:01,642 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 22:48:01,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:01,643 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:01,643 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:01,643 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-02-17 22:48:01,648 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 22:48:01,649 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:01,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:01,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:01,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:01,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:01,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:01,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:01,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:01,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:01,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:01,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:01,673 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:01,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:01,701 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 22:48:01,702 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 22:48:01,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99848 states and 639429 transitions. cyclomatic complexity: 547710 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 22:48:02,077 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:48:02,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:05,667 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99848 states and 639429 transitions. cyclomatic complexity: 547710. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) Result 255972 states and 1709903 transitions. Complement of second has 6 states. [2025-02-17 22:48:05,667 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 22:48:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 22:48:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-02-17 22:48:05,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:48:05,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:05,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:48:05,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:05,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 127 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:48:05,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:05,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 255972 states and 1709903 transitions. [2025-02-17 22:48:12,360 INFO L131 ngComponentsAnalysis]: Automaton has 9190 accepting balls. 60348 [2025-02-17 22:48:15,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 255972 states to 189972 states and 1284314 transitions. [2025-02-17 22:48:15,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72118 [2025-02-17 22:48:15,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92247 [2025-02-17 22:48:15,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189972 states and 1284314 transitions. [2025-02-17 22:48:15,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:15,751 INFO L218 hiAutomatonCegarLoop]: Abstraction has 189972 states and 1284314 transitions. [2025-02-17 22:48:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189972 states and 1284314 transitions. [2025-02-17 22:48:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189972 to 169843. [2025-02-17 22:48:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169843 states, 169843 states have (on average 6.81265639443486) internal successors, (1157082), 169842 states have internal predecessors, (1157082), 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 22:48:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169843 states to 169843 states and 1157082 transitions. [2025-02-17 22:48:22,612 INFO L240 hiAutomatonCegarLoop]: Abstraction has 169843 states and 1157082 transitions. [2025-02-17 22:48:22,612 INFO L432 stractBuchiCegarLoop]: Abstraction has 169843 states and 1157082 transitions. [2025-02-17 22:48:22,612 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:22,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 169843 states and 1157082 transitions. [2025-02-17 22:48:24,402 INFO L131 ngComponentsAnalysis]: Automaton has 9190 accepting balls. 60348 [2025-02-17 22:48:24,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:24,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:24,406 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:48:24,406 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:24,406 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[165] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[168] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" [2025-02-17 22:48:24,407 INFO L754 eck$LassoCheckResult]: Loop: "[131] L56-->L58: 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[]" "[133] L58-->L59: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[135] L59-->L56: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-02-17 22:48:24,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash 3765676, now seen corresponding path program 1 times [2025-02-17 22:48:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:24,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219597474] [2025-02-17 22:48:24,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:24,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:24,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:24,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:24,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:24,410 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:24,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:24,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:24,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:24,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:24,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash 159940, now seen corresponding path program 1 times [2025-02-17 22:48:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931164381] [2025-02-17 22:48:24,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:24,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:24,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:24,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:24,416 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:24,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:24,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:24,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:24,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:24,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash 514234169, now seen corresponding path program 1 times [2025-02-17 22:48:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:24,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618805985] [2025-02-17 22:48:24,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:24,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:24,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:24,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:24,421 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:24,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:24,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:24,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:24,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:24,443 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:24,443 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:24,443 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:24,443 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:24,443 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:24,443 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:24,443 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:24,443 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:24,443 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:24,443 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:24,443 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:24,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:24,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:24,472 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:24,473 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:24,475 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 22:48:24,475 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 22:48:24,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:24,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:24,493 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 22:48:24,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:24,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:24,495 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 22:48:24,495 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 22:48:24,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:24,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:24,552 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:24,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:48:24,555 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:24,555 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:24,555 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:24,555 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:24,556 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:24,556 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:24,556 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:24,556 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:24,556 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:24,556 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:24,556 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:24,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:24,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:24,580 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:24,580 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:24,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:24,581 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 22:48:24,583 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 22:48:24,584 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 22:48:24,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:24,593 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:24,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:24,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:24,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:24,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:24,595 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:24,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:24,599 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:24,599 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:24,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:24,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:24,600 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 22:48:24,601 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 22:48:24,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:24,602 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:24,602 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:24,602 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, y1) = 1*z1 - 1*y1 Supporting invariants [] [2025-02-17 22:48:24,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:24,607 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:24,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:24,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:24,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:24,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:24,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:24,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:24,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:24,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:24,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:24,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:24,631 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:24,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:24,651 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 22:48:24,651 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 22:48:24,651 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 169843 states and 1157082 transitions. cyclomatic complexity: 999985 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 22:48:25,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0