/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/pc4v.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:26:06,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:26:06,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:26:07,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:26:07,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:26:07,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:26:07,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:26:07,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:26:07,029 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:26:07,029 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:26:07,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:26:07,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:26:07,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:26:07,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:26:07,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:26:07,031 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:26:07,031 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:26:07,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:26:07,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:26:07,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:26:07,264 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:26:07,264 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:26:07,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc4v.c.bpl [2025-04-26 16:26:07,265 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc4v.c.bpl' [2025-04-26 16:26:07,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:26:07,278 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:26:07,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:07,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:26:07,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:26:07,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,310 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:26:07,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:26:07,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:26:07,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:26:07,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:26:07,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,317 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:26:07,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:26:07,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:26:07,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:26:07,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/1) ... [2025-04-26 16:26:07,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:07,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:07,349 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) [2025-04-26 16:26:07,351 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 [2025-04-26 16:26:07,370 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:26:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:26:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:26:07,370 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:26:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:26:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:26:07,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:26:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:26:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:26:07,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:26:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:26:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:26:07,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:26:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:26:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:26:07,372 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:26:07,406 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:26:07,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:26:07,490 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:26:07,491 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:26:07,497 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:26:07,497 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:26:07,498 INFO L201 PluginConnector]: Adding new model pc4v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:07 BoogieIcfgContainer [2025-04-26 16:26:07,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:26:07,499 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:26:07,499 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:26:07,502 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:26:07,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:07,503 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:26:07" (1/2) ... [2025-04-26 16:26:07,504 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@281c4a02 and model type pc4v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:26:07, skipping insertion in model container [2025-04-26 16:26:07,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:26:07,504 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc4v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:26:07" (2/2) ... [2025-04-26 16:26:07,505 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc4v.c.bpl [2025-04-26 16:26:07,560 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:26:07,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 16:26:07,608 INFO L116 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-04-26 16:26:07,611 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:26:07,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 93 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-04-26 16:26:07,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-04-26 16:26:07,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-04-26 16:26:07,620 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 43 places, 34 transitions, 92 flow [2025-04-26 16:26:07,628 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:26:07,628 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:26:07,629 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:26:07,629 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:26:07,629 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:26:07,629 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:26:07,629 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:26:07,629 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:26:07,630 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:26:07,861 INFO L131 ngComponentsAnalysis]: Automaton has 265 accepting balls. 1653 [2025-04-26 16:26:07,861 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:07,861 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:07,864 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:07,864 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:07,864 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:26:07,864 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1815 states, but on-demand construction may add more states [2025-04-26 16:26:07,898 INFO L131 ngComponentsAnalysis]: Automaton has 265 accepting balls. 1653 [2025-04-26 16:26:07,898 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:07,898 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:07,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:26:07,899 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:07,902 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[107] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:26:07,903 INFO L754 eck$LassoCheckResult]: Loop: "[82] L27-->L29: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[84] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[86] L30-->L27: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:07,907 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash 3393, now seen corresponding path program 1 times [2025-04-26 16:26:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:07,912 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639033439] [2025-04-26 16:26:07,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:07,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:07,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:07,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:07,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:07,958 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:07,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:07,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:07,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:07,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:07,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:07,976 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash 111283, now seen corresponding path program 1 times [2025-04-26 16:26:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:07,977 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341255654] [2025-04-26 16:26:07,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:07,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:07,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:07,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:07,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:07,984 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:07,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:07,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:07,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:07,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:07,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:07,992 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash 101162355, now seen corresponding path program 1 times [2025-04-26 16:26:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:07,992 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849950944] [2025-04-26 16:26:07,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:07,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:08,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:08,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:08,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:08,000 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:08,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:26:08,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:26:08,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:08,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:08,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:08,066 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:08,067 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:08,067 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:08,067 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:08,067 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:08,067 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,067 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:08,067 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:08,067 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:08,067 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:08,067 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:08,078 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:08,089 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:08,129 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:08,129 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:08,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,133 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) [2025-04-26 16:26:08,135 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 [2025-04-26 16:26:08,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:08,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:08,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:08,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:26:08,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:08,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:08,198 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:08,198 INFO L403 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] [2025-04-26 16:26:08,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:08,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:08,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:26:08,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:08,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:08,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:08,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:08,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:26:08,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:08,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:08,309 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:08,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:08,314 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:08,314 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:08,314 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:08,314 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:08,314 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:08,314 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,314 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:08,314 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:08,314 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:26:08,314 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:08,314 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:08,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:08,320 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:08,352 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:08,355 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:08,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:08,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:26:08,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:08,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:08,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:08,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:08,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:08,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:08,380 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:08,380 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:08,383 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:08,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:08,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:08,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:26:08,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:08,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:08,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:08,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:08,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:08,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:08,407 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:08,407 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:08,409 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:08,412 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:08,413 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:08,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:08,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:08,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:26:08,418 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:08,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:26:08,422 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:08,422 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:08,423 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:26:08,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:26:08,434 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:08,464 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:08,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:26:08,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:26:08,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:08,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:08,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:08,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:08,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:08,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:08,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:08,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:08,485 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:08,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:08,605 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:08,608 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:08,805 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 4406 states and 18422 transitions. Complement of second has 6 states. [2025-04-26 16:26:08,808 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:26:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-04-26 16:26:08,821 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:26:08,822 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:08,823 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:26:08,823 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:08,823 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 79 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:26:08,823 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:08,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4406 states and 18422 transitions. [2025-04-26 16:26:08,890 INFO L131 ngComponentsAnalysis]: Automaton has 315 accepting balls. 1533 [2025-04-26 16:26:08,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4406 states to 3125 states and 13319 transitions. [2025-04-26 16:26:08,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1679 [2025-04-26 16:26:08,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2162 [2025-04-26 16:26:08,962 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3125 states and 13319 transitions. [2025-04-26 16:26:08,963 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:08,963 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3125 states and 13319 transitions. [2025-04-26 16:26:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states and 13319 transitions. [2025-04-26 16:26:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2643. [2025-04-26 16:26:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2643 states have (on average 4.225501324252743) internal successors, (in total 11168), 2642 states have internal predecessors, (11168), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 11168 transitions. [2025-04-26 16:26:09,141 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2643 states and 11168 transitions. [2025-04-26 16:26:09,141 INFO L438 stractBuchiCegarLoop]: Abstraction has 2643 states and 11168 transitions. [2025-04-26 16:26:09,141 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:26:09,141 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2643 states and 11168 transitions. [2025-04-26 16:26:09,161 INFO L131 ngComponentsAnalysis]: Automaton has 315 accepting balls. 1533 [2025-04-26 16:26:09,161 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:09,161 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:09,162 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:26:09,162 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:09,162 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[107] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[110] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:26:09,162 INFO L754 eck$LassoCheckResult]: Loop: "[88] L38-->L40: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[90] L40-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[92] L41-->L38: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:09,163 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash 105293, now seen corresponding path program 1 times [2025-04-26 16:26:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:09,163 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762141936] [2025-04-26 16:26:09,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:09,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:09,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:09,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:09,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:09,170 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:09,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:09,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:09,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:09,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:09,175 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 117241, now seen corresponding path program 1 times [2025-04-26 16:26:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:09,175 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560141535] [2025-04-26 16:26:09,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:09,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:09,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:09,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:09,182 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:09,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:09,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:09,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:09,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:09,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1158096083, now seen corresponding path program 1 times [2025-04-26 16:26:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:09,188 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944133583] [2025-04-26 16:26:09,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:09,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:09,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:09,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:09,199 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:09,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:09,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:09,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:09,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:09,229 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:09,229 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:09,229 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:09,229 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:09,229 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:09,230 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:09,230 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:09,230 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:09,230 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:09,230 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:09,230 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:09,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:09,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:09,262 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:09,262 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:09,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:09,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:09,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:26:09,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:09,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:09,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:26:09,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:09,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:09,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:09,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:26:09,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:09,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:09,360 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:09,364 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 [2025-04-26 16:26:09,364 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:09,365 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:09,365 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:09,365 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:09,365 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:09,365 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:09,365 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:09,365 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:09,365 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:26:09,365 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:09,365 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:09,366 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:09,371 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:09,396 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:09,396 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:09,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:09,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:09,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:09,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:26:09,402 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:09,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:09,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:09,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:09,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:09,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:09,414 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:09,414 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:09,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:09,419 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:09,419 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:09,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:09,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:09,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:09,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:26:09,424 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:09,426 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:26:09,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:26:09,427 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:09,427 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:09,427 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:26:09,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:26:09,435 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:09,447 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:09,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:09,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:09,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:09,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:09,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:09,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:09,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:09,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:09,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:09,464 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:09,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:09,496 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:09,496 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2643 states and 11168 transitions. cyclomatic complexity: 8907 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:09,633 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2643 states and 11168 transitions. cyclomatic complexity: 8907. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 6824 states and 30159 transitions. Complement of second has 6 states. [2025-04-26 16:26:09,634 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:26:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-04-26 16:26:09,634 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:26:09,635 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:09,635 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:26:09,635 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:09,635 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:26:09,635 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:09,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6824 states and 30159 transitions. [2025-04-26 16:26:09,749 INFO L131 ngComponentsAnalysis]: Automaton has 338 accepting balls. 1272 [2025-04-26 16:26:09,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6824 states to 4786 states and 21337 transitions. [2025-04-26 16:26:09,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1817 [2025-04-26 16:26:09,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2332 [2025-04-26 16:26:09,869 INFO L74 IsDeterministic]: Start isDeterministic. Operand 4786 states and 21337 transitions. [2025-04-26 16:26:09,869 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:09,869 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4786 states and 21337 transitions. [2025-04-26 16:26:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states and 21337 transitions. [2025-04-26 16:26:10,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 4271. [2025-04-26 16:26:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 4271 states have (on average 4.479044720206041) internal successors, (in total 19130), 4270 states have internal predecessors, (19130), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 19130 transitions. [2025-04-26 16:26:10,054 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4271 states and 19130 transitions. [2025-04-26 16:26:10,054 INFO L438 stractBuchiCegarLoop]: Abstraction has 4271 states and 19130 transitions. [2025-04-26 16:26:10,054 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:26:10,054 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4271 states and 19130 transitions. [2025-04-26 16:26:10,082 INFO L131 ngComponentsAnalysis]: Automaton has 338 accepting balls. 1272 [2025-04-26 16:26:10,083 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:10,083 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:10,083 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:26:10,083 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:10,084 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[107] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[110] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[113] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:26:10,084 INFO L754 eck$LassoCheckResult]: Loop: "[94] L49-->L51: 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[]" "[96] L51-->L52: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[98] L52-->L49: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:10,084 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash 3264196, now seen corresponding path program 1 times [2025-04-26 16:26:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:10,085 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501025507] [2025-04-26 16:26:10,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:10,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:10,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:10,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:10,090 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:10,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:10,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:10,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:10,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:10,098 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 123199, now seen corresponding path program 1 times [2025-04-26 16:26:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:10,098 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324711645] [2025-04-26 16:26:10,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:10,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:10,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:10,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:10,104 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:10,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:10,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:10,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:10,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:10,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1540491364, now seen corresponding path program 1 times [2025-04-26 16:26:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:10,112 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153186191] [2025-04-26 16:26:10,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:10,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:10,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:10,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:10,118 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:10,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:26:10,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:26:10,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:10,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:10,145 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:10,146 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:10,146 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:10,146 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:10,146 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:10,146 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,146 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:10,146 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:10,146 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:10,146 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:10,146 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:10,147 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:10,150 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:10,176 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:10,176 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:10,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,179 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:10,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:26:10,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:10,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:10,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:26:10,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:10,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:26:10,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:10,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:10,237 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:10,237 INFO L403 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] [2025-04-26 16:26:10,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:10,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,246 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:10,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:26:10,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:10,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:10,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:10,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:10,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:26:10,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:10,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:10,340 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:10,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:10,347 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:10,347 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:10,347 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:10,347 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:10,347 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:10,347 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,347 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:10,347 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:10,347 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:26:10,347 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:10,347 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:10,348 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:10,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:10,375 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:10,375 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:10,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,377 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:10,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:26:10,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:10,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:10,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:10,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:10,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:10,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:10,391 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:10,391 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:10,394 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:10,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:10,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,402 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:10,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:26:10,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:10,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:10,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:10,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:10,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:10,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:10,463 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:10,463 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:10,465 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:10,469 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:26:10,469 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:26:10,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:10,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:10,471 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) [2025-04-26 16:26:10,473 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 [2025-04-26 16:26:10,474 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:10,477 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 [2025-04-26 16:26:10,478 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:10,478 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:10,478 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 16:26:10,484 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 [2025-04-26 16:26:10,485 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:10,499 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:10,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:26:10,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:26:10,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:10,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:10,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:10,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:10,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:10,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:10,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:10,517 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:10,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:10,549 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:10,550 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4271 states and 19130 transitions. cyclomatic complexity: 15403 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:10,684 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4271 states and 19130 transitions. cyclomatic complexity: 15403. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 12133 states and 56532 transitions. Complement of second has 6 states. [2025-04-26 16:26:10,685 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:26:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-04-26 16:26:10,686 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 89 transitions. Stem has 4 letters. Loop has 3 letters. [2025-04-26 16:26:10,687 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:10,687 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 89 transitions. Stem has 7 letters. Loop has 3 letters. [2025-04-26 16:26:10,687 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:10,687 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 89 transitions. Stem has 4 letters. Loop has 6 letters. [2025-04-26 16:26:10,687 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:10,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12133 states and 56532 transitions. [2025-04-26 16:26:10,886 INFO L131 ngComponentsAnalysis]: Automaton has 259 accepting balls. 777 [2025-04-26 16:26:11,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12133 states to 7447 states and 34926 transitions. [2025-04-26 16:26:11,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2055 [2025-04-26 16:26:11,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2542 [2025-04-26 16:26:11,017 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7447 states and 34926 transitions. [2025-04-26 16:26:11,018 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:26:11,018 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7447 states and 34926 transitions. [2025-04-26 16:26:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states and 34926 transitions. [2025-04-26 16:26:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 6716. [2025-04-26 16:26:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6716 states, 6716 states have (on average 4.733323406789756) internal successors, (in total 31789), 6715 states have internal predecessors, (31789), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6716 states to 6716 states and 31789 transitions. [2025-04-26 16:26:11,237 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6716 states and 31789 transitions. [2025-04-26 16:26:11,237 INFO L438 stractBuchiCegarLoop]: Abstraction has 6716 states and 31789 transitions. [2025-04-26 16:26:11,237 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:26:11,237 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6716 states and 31789 transitions. [2025-04-26 16:26:11,278 INFO L131 ngComponentsAnalysis]: Automaton has 259 accepting balls. 777 [2025-04-26 16:26:11,279 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:26:11,279 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:26:11,279 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:26:11,279 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:26:11,283 INFO L752 eck$LassoCheckResult]: Stem: "[75] $Ultimate##0-->L14: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[107] L14-->L27: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[110] L14-1-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[113] L15-->L49: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[116] L16-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[99] $Ultimate##0-->L61-1: Formula: (< 2 v_f_8) InVars {f=v_f_8} OutVars{f=v_f_8} AuxVars[] AssignedVars[]" [2025-04-26 16:26:11,284 INFO L754 eck$LassoCheckResult]: Loop: "[101] L61-1-->L63: Formula: (< v_y2_1 v_z2_3) InVars {z2=v_z2_3, y2=v_y2_1} OutVars{z2=v_z2_3, y2=v_y2_1} AuxVars[] AssignedVars[]" "[103] L63-->L64: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[104] L64-->L61-1: Formula: (= v_c_8 (+ v_c_7 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 16:26:11,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1158071245, now seen corresponding path program 1 times [2025-04-26 16:26:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:11,284 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572319825] [2025-04-26 16:26:11,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:11,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:11,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:11,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:11,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:26:11,359 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572319825] [2025-04-26 16:26:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572319825] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:26:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:26:11,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-26 16:26:11,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677528996] [2025-04-26 16:26:11,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:26:11,367 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:26:11,368 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 130149, now seen corresponding path program 1 times [2025-04-26 16:26:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:26:11,368 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365429044] [2025-04-26 16:26:11,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:26:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:26:11,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:11,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:11,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:11,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:11,374 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:26:11,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:11,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:11,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:11,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:26:11,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:26:11,426 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:11,426 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:11,426 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:11,426 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:11,426 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:26:11,426 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,426 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:11,426 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:11,426 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:11,426 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:11,426 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:11,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:11,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:11,470 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:11,470 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:26:11,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,477 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:26:11,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:11,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:11,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:11,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,497 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:26:11,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:11,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:11,524 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:26:11,524 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 16:26:11,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:26:11,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,532 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:26:11,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:26:11,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:11,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:26:11,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,551 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:26:11,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:26:11,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:26:11,615 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:26:11,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 16:26:11,619 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:26:11,620 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:26:11,620 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:26:11,620 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:26:11,620 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:26:11,620 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,620 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:26:11,620 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:26:11,620 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc4v.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:26:11,620 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:26:11,620 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:26:11,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:11,623 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:26:11,646 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:26:11,646 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:26:11,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,648 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:26:11,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:11,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:11,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:11,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:11,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:11,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:11,660 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:11,660 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:11,662 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:26:11,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-04-26 16:26:11,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,670 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:26:11,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:26:11,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:26:11,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:26:11,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:26:11,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:26:11,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:26:11,683 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:26:11,683 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:26:11,685 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:26:11,687 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:26:11,687 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:26:11,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:26:11,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:26:11,689 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:26:11,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:26:11,692 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:26:11,695 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:26:11,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 16:26:11,696 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:26:11,696 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:26:11,696 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-04-26 16:26:11,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:26:11,703 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:26:11,717 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:26:11,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:26:11,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:26:11,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:11,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:11,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:26:11,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:11,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:26:11,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:26:11,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:26:11,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:26:11,769 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:26:11,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:26:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:26:11,798 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:26:11,798 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6716 states and 31789 transitions. cyclomatic complexity: 25775 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:12,000 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6716 states and 31789 transitions. cyclomatic complexity: 25775. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 16474 states and 80463 transitions. Complement of second has 6 states. [2025-04-26 16:26:12,001 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:26:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-04-26 16:26:12,002 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:26:12,002 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:12,002 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 16:26:12,002 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:12,002 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 95 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 16:26:12,002 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:26:12,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16474 states and 80463 transitions. [2025-04-26 16:26:12,187 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:26:12,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16474 states to 0 states and 0 transitions. [2025-04-26 16:26:12,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:26:12,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:26:12,187 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:26:12,187 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:26:12,187 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:12,187 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:12,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:26:12,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:26:12,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:26:12,191 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (in total 6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:26:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:26:12,193 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:26:12,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:26:12,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:26:12,193 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:26:12,193 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:26:12,193 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:26:12,193 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:26:12,194 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:26:12,194 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:26:12,194 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:26:12,198 INFO L201 PluginConnector]: Adding new model pc4v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:26:12 BoogieIcfgContainer [2025-04-26 16:26:12,199 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:26:12,199 INFO L158 Benchmark]: Toolchain (without parser) took 4921.45ms. Allocated memory was 163.6MB in the beginning and 616.6MB in the end (delta: 453.0MB). Free memory was 90.6MB in the beginning and 330.0MB in the end (delta: -239.4MB). Peak memory consumption was 215.9MB. Max. memory is 8.0GB. [2025-04-26 16:26:12,199 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:26:12,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.64ms. Allocated memory is still 163.6MB. Free memory was 90.6MB in the beginning and 88.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:26:12,200 INFO L158 Benchmark]: Boogie Preprocessor took 17.49ms. Allocated memory is still 163.6MB. Free memory was 88.2MB in the beginning and 87.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:26:12,201 INFO L158 Benchmark]: RCFGBuilder took 168.92ms. Allocated memory is still 163.6MB. Free memory was 87.1MB in the beginning and 77.8MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:26:12,201 INFO L158 Benchmark]: BuchiAutomizer took 4699.90ms. Allocated memory was 163.6MB in the beginning and 616.6MB in the end (delta: 453.0MB). Free memory was 77.6MB in the beginning and 330.0MB in the end (delta: -252.4MB). Peak memory consumption was 199.1MB. Max. memory is 8.0GB. [2025-04-26 16:26:12,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.64ms. Allocated memory is still 163.6MB. Free memory was 90.6MB in the beginning and 88.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.49ms. Allocated memory is still 163.6MB. Free memory was 88.2MB in the beginning and 87.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 168.92ms. Allocated memory is still 163.6MB. Free memory was 87.1MB in the beginning and 77.8MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 4699.90ms. Allocated memory was 163.6MB in the beginning and 616.6MB in the end (delta: 453.0MB). Free memory was 77.6MB in the beginning and 330.0MB in the end (delta: -252.4MB). Peak memory consumption was 199.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.6s AutomataMinimizationTime, 3 MinimizatonAttempts, 1728 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.8s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 239 mSDsluCounter, 394 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 214 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 180 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:26:12,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...