/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/barrier-6t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:44,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:44,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:44,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:44,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:44,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:44,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:44,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:44,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:44,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:44,872 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:44,873 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:44,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:44,873 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:44,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:44,874 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:44,874 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:44,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:44,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:44,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:44,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:44,874 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:44,874 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:45,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:45,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:45,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:45,119 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:45,119 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:45,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-6t.c.bpl [2025-04-26 16:24:45,122 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-6t.c.bpl' [2025-04-26 16:24:45,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:45,143 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:45,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:45,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:45,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:45,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,177 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:45,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:45,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:45,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:45,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:45,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,188 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:45,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:45,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:45,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:45,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:24:45,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:24:45,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:45,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:45,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:45,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:45,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:24:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:24:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:24:45,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:24:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:24:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:24:45,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:24:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:24:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:24:45,262 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:45,299 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:45,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:45,433 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:45,434 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:45,441 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:45,441 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:45,441 INFO L201 PluginConnector]: Adding new model barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:45 BoogieIcfgContainer [2025-04-26 16:24:45,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:45,442 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:45,442 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:45,446 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:45,446 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:45,447 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/2) ... [2025-04-26 16:24:45,447 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5886117a and model type barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:45, skipping insertion in model container [2025-04-26 16:24:45,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:45,448 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:45" (2/2) ... [2025-04-26 16:24:45,450 INFO L376 chiAutomizerObserver]: Analyzing ICFG barrier-6t.c.bpl [2025-04-26 16:24:45,511 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 16:24:45,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 202 flow [2025-04-26 16:24:45,574 INFO L116 PetriNetUnfolderBase]: 12/68 cut-off events. [2025-04-26 16:24:45,576 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 16:24:45,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 68 events. 12/68 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 204 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2025-04-26 16:24:45,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 202 flow [2025-04-26 16:24:45,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 68 transitions, 172 flow [2025-04-26 16:24:45,586 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 75 places, 68 transitions, 172 flow [2025-04-26 16:24:45,594 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:45,594 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:45,594 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:45,594 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:45,594 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:45,594 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:45,594 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:45,594 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:45,596 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:25:11,805 INFO L131 ngComponentsAnalysis]: Automaton has 58492 accepting balls. 330216 [2025-04-26 16:25:11,805 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:11,805 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:11,833 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:11,833 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:11,834 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:25:11,834 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 337043 states, but on-demand construction may add more states [2025-04-26 16:25:21,825 INFO L131 ngComponentsAnalysis]: Automaton has 58492 accepting balls. 330216 [2025-04-26 16:25:21,825 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:21,826 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:21,852 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:25:21,853 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:21,859 INFO L752 eck$LassoCheckResult]: Stem: "[143] $Ultimate##0-->L14: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[234] L14-->L31: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:25:21,859 INFO L754 eck$LassoCheckResult]: Loop: "[179] L31-->L33: 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[]" "[181] L33-->L31: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:25:21,865 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 5628, now seen corresponding path program 1 times [2025-04-26 16:25:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:21,872 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476833821] [2025-04-26 16:25:21,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:21,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:21,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:21,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:21,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:21,942 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:21,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:21,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:21,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:21,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:21,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:21,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash 6691, now seen corresponding path program 1 times [2025-04-26 16:25:21,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:21,983 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4705994] [2025-04-26 16:25:21,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:21,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:21,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:21,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:21,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:21,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:21,995 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:21,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:22,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:22,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:22,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:22,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:22,012 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 5414238, now seen corresponding path program 1 times [2025-04-26 16:25:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:22,012 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169212934] [2025-04-26 16:25:22,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:22,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:22,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:22,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:22,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:22,021 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:22,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:22,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:22,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:22,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:22,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:22,104 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:22,105 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:22,105 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:22,105 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:22,105 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:22,105 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:22,105 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:22,105 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:22,105 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-6t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:22,105 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:22,106 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:22,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:22,170 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:22,175 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:22,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:22,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:22,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:22,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:25:22,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:22,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:22,229 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 [2025-04-26 16:25:22,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:22,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:22,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:22,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:25:22,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:22,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:22,376 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:22,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:25:22,384 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:22,385 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:22,385 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:22,385 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:22,385 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:22,385 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:22,385 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:22,385 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:22,385 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-6t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:25:22,385 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:22,385 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:22,386 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:22,408 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:22,411 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:22,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:22,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:22,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:22,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:25:22,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:22,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:22,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:22,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:22,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:22,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:22,459 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:22,459 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:22,463 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:22,470 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:22,471 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:22,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:25:22,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:25:22,480 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:22,483 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:22,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:25:22,484 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:22,484 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:22,485 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:25:22,498 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 [2025-04-26 16:25:22,505 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:22,532 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:22,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:22,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:22,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:22,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:22,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:22,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:22,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:22,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:22,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:22,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:22,578 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:22,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:22,640 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:25:22,643 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 337043 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0)