/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_PETRI_NET -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:24:35,060 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:24:35,097 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:24:35,114 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:24:35,114 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:24:35,114 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:24:35,115 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:24:35,115 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:24:35,116 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:24:35,116 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:24:35,116 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:24:35,116 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:24:35,117 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:24:35,117 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:24:35,117 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:24:35,117 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:24:35,118 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:24:35,118 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:24:35,118 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:24:35,118 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:24:35,119 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:24:35,121 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:24:35,121 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:24:35,121 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:24:35,122 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:24:35,122 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:24:35,122 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:24:35,122 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:24:35,122 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:24:35,123 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:24:35,123 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:24:35,123 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:24:35,123 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:24:35,124 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:24:35,124 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:24:35,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:24:35,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:24:35,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:24:35,303 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:24:35,303 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:24:35,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl [2023-10-12 17:24:35,305 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl' [2023-10-12 17:24:35,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:24:35,325 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:24:35,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:24:35,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:24:35,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:24:35,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,342 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:24:35,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:24:35,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:24:35,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:24:35,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:24:35,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:24:35,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:24:35,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:24:35,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:24:35,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/1) ... [2023-10-12 17:24:35,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:35,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:35,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:35,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:24:35,445 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:24:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:24:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:24:35,446 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:24:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:24:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:24:35,446 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:24:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:24:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:24:35,447 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:24:35,484 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:24:35,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:24:35,559 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:24:35,585 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:24:35,586 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:24:35,587 INFO L201 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:24:35 BoogieIcfgContainer [2023-10-12 17:24:35,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:24:35,596 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:24:35,596 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:24:35,605 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:24:35,606 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:24:35,606 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:35" (1/2) ... [2023-10-12 17:24:35,609 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a57bfc3 and model type misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:24:35, skipping insertion in model container [2023-10-12 17:24:35,609 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:24:35,609 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:24:35" (2/2) ... [2023-10-12 17:24:35,611 INFO L332 chiAutomizerObserver]: Analyzing ICFG misc-2-unrolled-atomic.wvr.bpl [2023-10-12 17:24:35,644 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:24:35,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:24:35,675 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:24:35,676 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:24:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:24:35,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:24:35,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2023-10-12 17:24:35,683 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:24:35,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:24:35,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:24:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 17 transitions, 46 flow [2023-10-12 17:24:35,698 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:24:35,698 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:24:35,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:24:35,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:24:35,782 INFO L134 LiptonReduction]: Checked pairs total: 37 [2023-10-12 17:24:35,782 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:24:35,805 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:24:35,805 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:24:35,805 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:24:35,805 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:24:35,805 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:24:35,805 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:24:35,806 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:24:35,806 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:24:35,806 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:24:35,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:35,814 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:24:35,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:24:35,814 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:35,817 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:24:35,817 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:24:35,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:35,820 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:24:35,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:24:35,820 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:35,823 INFO L748 eck$LassoCheckResult]: Stem: 28#[$Ultimate##0]true [46] $Ultimate##0-->L44: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[] 30#[L44]true [62] L44-->L18-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 32#[L18-1, L44-1]true [2023-10-12 17:24:35,823 INFO L750 eck$LassoCheckResult]: Loop: 32#[L18-1, L44-1]true [71] L18-1-->L18-1: Formula: (and (= v_pos_44 v_pos_43) (= (+ 2 v_i1_25) v_i1_24) (< v_i1_25 (* 2 v_N_7))) InVars {N=v_N_7, i1=v_i1_25, pos=v_pos_44} OutVars{N=v_N_7, i1=v_i1_24, pos=v_pos_43} AuxVars[] AssignedVars[i1, pos] 32#[L18-1, L44-1]true [2023-10-12 17:24:35,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2449, now seen corresponding path program 1 times [2023-10-12 17:24:35,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:35,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418716919] [2023-10-12 17:24:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:35,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:35,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:35,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:35,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash 102, now seen corresponding path program 1 times [2023-10-12 17:24:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:35,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631231405] [2023-10-12 17:24:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:35,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:35,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:35,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 75990, now seen corresponding path program 1 times [2023-10-12 17:24:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:35,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343273391] [2023-10-12 17:24:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:35,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:35,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:36,008 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:36,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:36,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:36,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:36,008 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:36,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:36,009 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:36,009 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled-atomic.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:24:36,009 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:36,009 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:36,019 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:36,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:36,055 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:36,056 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:36,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:36,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:36,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:24:36,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:36,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:36,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:24:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:36,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:36,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-10-12 17:24:36,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:36,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:36,233 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:36,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:36,237 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:36,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:36,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:36,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:36,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:36,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,238 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:36,238 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:36,238 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled-atomic.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:24:36,238 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:36,238 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:36,239 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:36,255 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:36,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:36,300 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:36,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:36,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:36,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-10-12 17:24:36,311 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 [2023-10-12 17:24:36,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:36,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:36,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:36,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:36,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:36,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:36,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:36,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:36,360 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:36,360 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:24:36,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:36,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:36,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-10-12 17:24:36,402 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:36,402 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:36,403 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:36,403 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N) = -1*i1 + 2*N Supporting invariants [] [2023-10-12 17:24:36,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:36,411 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:36,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:36,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:36,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:36,489 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:24:36,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:24:36,554 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:24:36,556 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 2 states, 2 states have (on average 1.5) 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) [2023-10-12 17:24:36,731 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 2 states, 2 states have (on average 1.5) 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 5 states and 160 transitions. [2023-10-12 17:24:36,732 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:36,734 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:24:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) 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) [2023-10-12 17:24:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-10-12 17:24:36,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:24:36,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:36,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:24:36,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:36,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:24:36,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:36,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:36,794 INFO L124 PetriNetUnfolderBase]: 31/63 cut-off events. [2023-10-12 17:24:36,794 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-10-12 17:24:36,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 63 events. 31/63 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 146 event pairs, 2 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 96. Up to 21 conditions per place. [2023-10-12 17:24:36,795 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:36,801 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:36,801 INFO L430 stractBuchiCegarLoop]: Abstraction has has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:36,801 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:24:36,801 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:36,812 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:36,812 INFO L124 PetriNetUnfolderBase]: 16/28 cut-off events. [2023-10-12 17:24:36,812 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-10-12 17:24:36,812 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:36,813 INFO L748 eck$LassoCheckResult]: Stem: 28#[$Ultimate##0]true [46] $Ultimate##0-->L44: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[] 30#[L44]true [62] L44-->L18-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 32#[L18-1, L44-1]true [65] L44-1-->L31-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 77#[L31-1, L45, L18-1]true [2023-10-12 17:24:36,813 INFO L750 eck$LassoCheckResult]: Loop: 77#[L31-1, L45, L18-1]true [73] L31-1-->L31-1: Formula: (and (= v_pos_48 v_pos_47) (= (+ 2 v_i2_25) v_i2_24) (< v_i2_25 (* v_N_11 2))) InVars {N=v_N_11, i2=v_i2_25, pos=v_pos_48} OutVars{N=v_N_11, i2=v_i2_24, pos=v_pos_47} AuxVars[] AssignedVars[i2, pos] 77#[L31-1, L45, L18-1]true [73] L31-1-->L31-1: Formula: (and (= v_pos_48 v_pos_47) (= (+ 2 v_i2_25) v_i2_24) (< v_i2_25 (* v_N_11 2))) InVars {N=v_N_11, i2=v_i2_25, pos=v_pos_48} OutVars{N=v_N_11, i2=v_i2_24, pos=v_pos_47} AuxVars[] AssignedVars[i2, pos] 77#[L31-1, L45, L18-1]true [2023-10-12 17:24:36,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash 75984, now seen corresponding path program 1 times [2023-10-12 17:24:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:36,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995862787] [2023-10-12 17:24:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:36,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:36,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:36,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:36,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 3297, now seen corresponding path program 1 times [2023-10-12 17:24:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174340511] [2023-10-12 17:24:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:36,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:36,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:36,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:36,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash 73022960, now seen corresponding path program 1 times [2023-10-12 17:24:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:36,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098134035] [2023-10-12 17:24:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:36,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:36,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:36,935 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:36,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:36,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:36,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:36,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:36,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:36,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:36,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled-atomic.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:24:36,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:36,936 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:36,937 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:36,941 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:36,967 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:36,967 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:36,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:36,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:36,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-10-12 17:24:36,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:36,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:36,980 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:36,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:24:36,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:36,987 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2023-10-12 17:24:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:36,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:36,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-10-12 17:24:36,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:36,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:37,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:37,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:37,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:37,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:24:37,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:37,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:37,130 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:37,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:37,133 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:37,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:37,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:37,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:37,133 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:37,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:37,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:37,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:37,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled-atomic.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:24:37,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:37,134 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:37,135 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:37,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:37,160 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:37,161 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:37,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:37,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:37,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:24:37,197 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 [2023-10-12 17:24:37,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:37,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:37,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:37,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:37,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:37,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:37,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:37,212 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:37,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-10-12 17:24:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:37,217 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:37,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-10-12 17:24:37,221 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 [2023-10-12 17:24:37,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:37,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:37,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:37,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:37,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:37,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:37,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:37,244 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:37,246 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:37,247 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:24:37,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:37,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:37,249 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:37,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-10-12 17:24:37,255 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:37,255 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:37,255 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:37,255 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N) = -1*i2 + 2*N Supporting invariants [] [2023-10-12 17:24:37,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-10-12 17:24:37,261 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:37,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:37,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:37,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:37,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:24:37,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:24:37,298 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 [2023-10-12 17:24:37,299 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. 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) [2023-10-12 17:24:37,367 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. 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 7 states and 211 transitions. [2023-10-12 17:24:37,368 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:37,380 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:24:37,382 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) [2023-10-12 17:24:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-10-12 17:24:37,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 140 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:24:37,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:37,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 140 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:24:37,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:37,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 140 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:24:37,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:37,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:37,407 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:24:37,408 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-10-12 17:24:37,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 136 events. 67/136 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 489 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 240. Up to 48 conditions per place. [2023-10-12 17:24:37,408 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:37,428 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:37,428 INFO L430 stractBuchiCegarLoop]: Abstraction has has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:37,428 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:24:37,428 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:37,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:37,493 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:24:37,493 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-10-12 17:24:37,493 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:24:37,499 INFO L201 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:24:37 BoogieIcfgContainer [2023-10-12 17:24:37,499 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:24:37,500 INFO L158 Benchmark]: Toolchain (without parser) took 2174.82ms. Allocated memory was 215.0MB in the beginning and 265.3MB in the end (delta: 50.3MB). Free memory was 168.1MB in the beginning and 224.6MB in the end (delta: -56.5MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-10-12 17:24:37,500 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.25ms. Allocated memory is still 215.0MB. Free memory is still 169.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:24:37,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.32ms. Allocated memory is still 215.0MB. Free memory was 167.9MB in the beginning and 166.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:24:37,501 INFO L158 Benchmark]: Boogie Preprocessor took 15.44ms. Allocated memory is still 215.0MB. Free memory was 166.4MB in the beginning and 165.4MB in the end (delta: 968.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:24:37,501 INFO L158 Benchmark]: RCFGBuilder took 225.07ms. Allocated memory is still 215.0MB. Free memory was 165.3MB in the beginning and 154.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:24:37,502 INFO L158 Benchmark]: BuchiAutomizer took 1903.35ms. Allocated memory was 215.0MB in the beginning and 265.3MB in the end (delta: 50.3MB). Free memory was 186.3MB in the beginning and 224.6MB in the end (delta: -38.3MB). Peak memory consumption was 80.5MB. Max. memory is 8.0GB. [2023-10-12 17:24:37,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:37,504 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25ms. Allocated memory is still 215.0MB. Free memory is still 169.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.32ms. Allocated memory is still 215.0MB. Free memory was 167.9MB in the beginning and 166.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.44ms. Allocated memory is still 215.0MB. Free memory was 166.4MB in the beginning and 165.4MB in the end (delta: 968.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 225.07ms. Allocated memory is still 215.0MB. Free memory was 165.3MB in the beginning and 154.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 1903.35ms. Allocated memory was 215.0MB in the beginning and 265.3MB in the end (delta: 50.3MB). Free memory was 186.3MB in the beginning and 224.6MB in the end (delta: -38.3MB). Peak memory consumption was 80.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * N + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i2 + 2 * N and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 55 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 102ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 22 PlacesBefore, 16 PlacesAfterwards, 17 TransitionsBefore, 11 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 37, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:24:37,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...