/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/indep_loops_7.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:57,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:57,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:57,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:57,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:57,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:57,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:57,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:57,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:57,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:57,771 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:57,771 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:57,771 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:57,771 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:57,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:57,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:57,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:57,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:57,773 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:57,773 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:58,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:58,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:58,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:58,032 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:58,033 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:58,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_7.c.bpl [2025-02-17 22:45:58,035 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_7.c.bpl' [2025-02-17 22:45:58,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:58,053 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:58,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:58,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:58,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:58,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,071 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:58,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:58,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:58,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:58,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:58,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,082 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:58,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:58,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:58,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:58,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/1) ... [2025-02-17 22:45:58,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:58,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:45:58,144 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:58,144 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:58,144 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:58,144 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:58,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:45:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:45:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:45:58,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:45:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:45:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:45:58,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-02-17 22:45:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-17 22:45:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-17 22:45:58,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-02-17 22:45:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-02-17 22:45:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-02-17 22:45:58,147 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:45:58,181 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:58,183 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:58,253 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:58,254 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:58,261 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:58,261 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:58,262 INFO L201 PluginConnector]: Adding new model indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:58 BoogieIcfgContainer [2025-02-17 22:45:58,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:58,262 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:58,262 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:58,267 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:58,268 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:58,268 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:58" (1/2) ... [2025-02-17 22:45:58,269 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39fb89d and model type indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:58, skipping insertion in model container [2025-02-17 22:45:58,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:58,269 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:58" (2/2) ... [2025-02-17 22:45:58,270 INFO L363 chiAutomizerObserver]: Analyzing ICFG indep_loops_7.c.bpl [2025-02-17 22:45:58,348 INFO L143 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2025-02-17 22:45:58,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 57 transitions, 163 flow [2025-02-17 22:45:58,396 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2025-02-17 22:45:58,400 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-17 22:45:58,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 43 events. 7/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2025-02-17 22:45:58,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 57 transitions, 163 flow [2025-02-17 22:45:58,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 43 transitions, 128 flow [2025-02-17 22:45:58,417 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:58,418 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:58,418 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:58,418 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:58,418 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:58,418 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:58,419 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:58,419 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:58,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:46:00,912 INFO L131 ngComponentsAnalysis]: Automaton has 3991 accepting balls. 26924 [2025-02-17 22:46:00,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:00,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:00,917 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:46:00,917 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:00,918 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:46:00,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 27306 states, but on-demand construction may add more states [2025-02-17 22:46:01,622 INFO L131 ngComponentsAnalysis]: Automaton has 3991 accepting balls. 26924 [2025-02-17 22:46:01,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:01,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:01,625 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:46:01,625 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:01,629 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:46:01,629 INFO L754 eck$LassoCheckResult]: Loop: "[108] L32-->L34: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[110] L34-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:46:01,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 168, now seen corresponding path program 1 times [2025-02-17 22:46:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:01,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191873077] [2025-02-17 22:46:01,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:01,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:46:01,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:46:01,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:01,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:01,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:01,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:46:01,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:46:01,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:01,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:01,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:01,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash 4419, now seen corresponding path program 1 times [2025-02-17 22:46:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:01,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972862679] [2025-02-17 22:46:01,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:01,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:01,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:01,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:01,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:01,743 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:01,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:01,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:01,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:01,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:01,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:01,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash 164906, now seen corresponding path program 1 times [2025-02-17 22:46:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:01,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615895132] [2025-02-17 22:46:01,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:01,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:01,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:01,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:01,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:01,755 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:01,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:01,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:01,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:01,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:01,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:01,815 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:01,816 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:01,816 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:01,816 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:01,816 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:01,817 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:01,817 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:01,817 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:01,817 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:46:01,817 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:01,817 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:01,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:01,867 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:01,867 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:01,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:01,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:01,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:01,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:46:01,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:01,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:01,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:46:01,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:01,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:01,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:46:01,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:01,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:01,974 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:01,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:46:01,978 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:01,978 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:01,980 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:01,980 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:01,980 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:01,980 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:01,980 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:01,980 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:01,980 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:46:01,980 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:01,980 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:01,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:02,000 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:02,004 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:02,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:02,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:02,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:46:02,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:46:02,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:02,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:02,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:02,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:02,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:02,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:02,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:02,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:02,037 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:02,037 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:02,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:02,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:02,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:46:02,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:02,042 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:02,043 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:02,043 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:46:02,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:46:02,054 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:02,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:02,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:46:02,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:46:02,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:02,095 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:02,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:02,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:02,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:02,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:02,112 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:02,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:46:02,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:02,187 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:46:02,191 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 27306 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:04,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 27306 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 76453 states and 569338 transitions. Complement of second has 6 states. [2025-02-17 22:46:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-02-17 22:46:04,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 1 letters. Loop has 2 letters. [2025-02-17 22:46:04,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:04,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:46:04,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:04,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 1 letters. Loop has 4 letters. [2025-02-17 22:46:04,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:04,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76453 states and 569338 transitions. [2025-02-17 22:46:06,313 INFO L131 ngComponentsAnalysis]: Automaton has 4830 accepting balls. 26670 [2025-02-17 22:46:07,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76453 states to 59301 states and 446221 transitions. [2025-02-17 22:46:07,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26921 [2025-02-17 22:46:07,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43111 [2025-02-17 22:46:07,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59301 states and 446221 transitions. [2025-02-17 22:46:07,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:07,981 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59301 states and 446221 transitions. [2025-02-17 22:46:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59301 states and 446221 transitions. [2025-02-17 22:46:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59301 to 43113. [2025-02-17 22:46:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43113 states, 43113 states have (on average 7.7528587664973445) internal successors, (334249), 43112 states have internal predecessors, (334249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43113 states to 43113 states and 334249 transitions. [2025-02-17 22:46:11,059 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43113 states and 334249 transitions. [2025-02-17 22:46:11,059 INFO L432 stractBuchiCegarLoop]: Abstraction has 43113 states and 334249 transitions. [2025-02-17 22:46:11,059 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:46:11,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43113 states and 334249 transitions. [2025-02-17 22:46:11,571 INFO L131 ngComponentsAnalysis]: Automaton has 4830 accepting balls. 26670 [2025-02-17 22:46:11,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:11,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:11,573 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:46:11,573 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:11,574 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[140] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:46:11,574 INFO L754 eck$LassoCheckResult]: Loop: "[112] L41-->L43: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[114] L43-->L41: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:46:11,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash 5348, now seen corresponding path program 1 times [2025-02-17 22:46:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931534251] [2025-02-17 22:46:11,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:11,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,578 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:11,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:11,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 4547, now seen corresponding path program 1 times [2025-02-17 22:46:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399146589] [2025-02-17 22:46:11,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:11,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,583 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:11,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:11,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 5143014, now seen corresponding path program 1 times [2025-02-17 22:46:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827650226] [2025-02-17 22:46:11,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:11,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:11,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:11,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,590 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:11,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:11,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:11,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:11,610 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:11,610 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:11,610 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:11,610 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:11,610 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:11,610 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,610 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:11,610 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:11,610 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:11,610 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:11,610 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:11,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:11,628 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:11,628 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:11,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:46:11,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:11,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:11,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:11,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:11,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:46:11,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:11,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:11,713 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:11,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:46:11,716 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:11,716 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:11,716 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:11,716 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:11,716 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:11,716 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,716 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:11,716 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:11,717 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:11,717 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:11,717 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:11,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:11,735 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:11,736 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:11,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:46:11,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:46:11,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:11,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:11,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:11,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:11,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:11,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:11,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:11,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:11,754 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:11,754 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:11,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:11,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:46:11,758 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:11,758 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:11,758 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:11,758 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-02-17 22:46:11,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:46:11,763 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:11,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:11,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:11,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:11,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:11,793 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:11,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:46:11,803 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:46:11,804 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43113 states and 334249 transitions. cyclomatic complexity: 296995 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:12,357 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 [2025-02-17 22:46:14,484 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43113 states and 334249 transitions. cyclomatic complexity: 296995. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 132275 states and 1065162 transitions. Complement of second has 6 states. [2025-02-17 22:46:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-02-17 22:46:14,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:46:14,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:14,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:46:14,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:14,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 107 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:46:14,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:14,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132275 states and 1065162 transitions. [2025-02-17 22:46:17,892 INFO L131 ngComponentsAnalysis]: Automaton has 5961 accepting balls. 26102 [2025-02-17 22:46:20,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132275 states to 100537 states and 815997 transitions. [2025-02-17 22:46:20,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35935 [2025-02-17 22:46:20,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54906 [2025-02-17 22:46:20,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100537 states and 815997 transitions. [2025-02-17 22:46:20,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:20,334 INFO L218 hiAutomatonCegarLoop]: Abstraction has 100537 states and 815997 transitions. [2025-02-17 22:46:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100537 states and 815997 transitions. [2025-02-17 22:46:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100537 to 81566. [2025-02-17 22:46:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81566 states, 81566 states have (on average 8.44151975087659) internal successors, (688541), 81565 states have internal predecessors, (688541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81566 states to 81566 states and 688541 transitions. [2025-02-17 22:46:25,026 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81566 states and 688541 transitions. [2025-02-17 22:46:25,026 INFO L432 stractBuchiCegarLoop]: Abstraction has 81566 states and 688541 transitions. [2025-02-17 22:46:25,027 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:46:25,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81566 states and 688541 transitions. [2025-02-17 22:46:26,160 INFO L131 ngComponentsAnalysis]: Automaton has 5961 accepting balls. 26102 [2025-02-17 22:46:26,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:26,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:26,162 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:46:26,162 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:26,162 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[140] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[143] L14-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:46:26,162 INFO L754 eck$LassoCheckResult]: Loop: "[116] L50-->L52: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[118] L52-->L50: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:46:26,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash 165931, now seen corresponding path program 1 times [2025-02-17 22:46:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:26,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402224814] [2025-02-17 22:46:26,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:26,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:26,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:26,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:26,166 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:26,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:26,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:26,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:26,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:26,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 4675, now seen corresponding path program 1 times [2025-02-17 22:46:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571851098] [2025-02-17 22:46:26,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:26,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:26,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:26,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:26,172 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:26,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:26,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:26,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:26,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash 159463405, now seen corresponding path program 1 times [2025-02-17 22:46:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082839802] [2025-02-17 22:46:26,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:26,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:26,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:26,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:26,178 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:26,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:26,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:26,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:26,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:26,210 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:26,210 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:26,211 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:26,211 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:26,211 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:26,211 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,211 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:26,211 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:26,211 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:26,211 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:26,211 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:26,211 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:26,257 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:26,257 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:26,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:26,261 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:26,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:46:26,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:26,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:26,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:26,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:26,287 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:26,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:46:26,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:26,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:26,365 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:26,369 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 [2025-02-17 22:46:26,369 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:26,369 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:26,369 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:26,369 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:26,369 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:26,369 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,369 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:26,369 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:26,369 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:26,369 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:26,369 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:26,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:26,388 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:26,388 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:26,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:46:26,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:46:26,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:26,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:26,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:26,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:26,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:26,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:26,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:26,409 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:26,412 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:26,412 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:26,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:26,414 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:26,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:46:26,417 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:26,417 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:26,417 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:26,417 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:46:26,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:46:26,424 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:26,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:26,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:26,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:26,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:26,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:26,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:26,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:26,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:26,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:26,452 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:26,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:46:26,466 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:46:26,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81566 states and 688541 transitions. cyclomatic complexity: 616136 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:26,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:46:31,655 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81566 states and 688541 transitions. cyclomatic complexity: 616136. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 256668 states and 2216431 transitions. Complement of second has 6 states. [2025-02-17 22:46:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-02-17 22:46:31,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:46:31,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:31,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:31,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:31,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 111 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:46:31,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:31,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 256668 states and 2216431 transitions. [2025-02-17 22:46:39,153 INFO L131 ngComponentsAnalysis]: Automaton has 7150 accepting balls. 24950 [2025-02-17 22:46:43,941 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 256668 states to 189170 states and 1638482 transitions. [2025-02-17 22:46:43,941 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53949 [2025-02-17 22:46:44,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73148 [2025-02-17 22:46:44,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189170 states and 1638482 transitions. [2025-02-17 22:46:44,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:44,368 INFO L218 hiAutomatonCegarLoop]: Abstraction has 189170 states and 1638482 transitions. [2025-02-17 22:46:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189170 states and 1638482 transitions. [2025-02-17 22:46:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189170 to 159192. [2025-02-17 22:46:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159192 states, 159192 states have (on average 8.965494497210916) internal successors, (1427235), 159191 states have internal predecessors, (1427235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159192 states to 159192 states and 1427235 transitions. [2025-02-17 22:46:53,554 INFO L240 hiAutomatonCegarLoop]: Abstraction has 159192 states and 1427235 transitions. [2025-02-17 22:46:53,554 INFO L432 stractBuchiCegarLoop]: Abstraction has 159192 states and 1427235 transitions. [2025-02-17 22:46:53,554 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:46:53,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159192 states and 1427235 transitions. [2025-02-17 22:46:56,361 INFO L131 ngComponentsAnalysis]: Automaton has 7150 accepting balls. 24950 [2025-02-17 22:46:56,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:56,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:56,369 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:46:56,369 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:56,370 INFO L752 eck$LassoCheckResult]: Stem: "[137] $Ultimate##0-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[140] L13-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[143] L14-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[146] L15-->L59: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:46:56,370 INFO L754 eck$LassoCheckResult]: Loop: "[120] L59-->L61: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[122] L61-->L59: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:46:56,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 5144007, now seen corresponding path program 1 times [2025-02-17 22:46:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:56,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563565296] [2025-02-17 22:46:56,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:56,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:56,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:56,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:56,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:56,382 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:56,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:56,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:56,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:56,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:56,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:56,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash 4803, now seen corresponding path program 1 times [2025-02-17 22:46:56,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:56,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419243703] [2025-02-17 22:46:56,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:56,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:56,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:56,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:56,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:56,396 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:56,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:56,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:56,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:56,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:56,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:56,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 648427273, now seen corresponding path program 1 times [2025-02-17 22:46:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028955062] [2025-02-17 22:46:56,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:56,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:56,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:56,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:56,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:56,416 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:56,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:56,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:56,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:56,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:56,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:56,456 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:56,456 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:56,456 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:56,456 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:56,456 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:56,456 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:56,456 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:56,456 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:56,456 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:56,456 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:56,456 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:56,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:56,481 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:56,481 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:56,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:56,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:56,485 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:56,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:46:56,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:56,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:56,523 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 [2025-02-17 22:46:56,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:56,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:56,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:56,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:56,536 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