/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/bench/exp1x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:22:37,213 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:22:37,258 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 17:22:37,277 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:22:37,278 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:22:37,278 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:22:37,279 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:22:37,280 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:22:37,280 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:22:37,280 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:22:37,281 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:22:37,281 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:22:37,281 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:22:37,281 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:22:37,282 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:22:37,282 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:22:37,282 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:22:37,283 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:22:37,283 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:22:37,283 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:22:37,284 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:22:37,284 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:22:37,285 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:22:37,285 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:22:37,285 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:22:37,286 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:22:37,286 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:22:37,286 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:22:37,286 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:22:37,287 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:22:37,287 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:22:37,287 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:22:37,288 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:22:37,289 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:22:37,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:22:37,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:22:37,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:22:37,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:22:37,556 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:22:37,561 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:22:37,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl [2023-10-12 17:22:37,563 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp1x3.wvr.bpl' [2023-10-12 17:22:37,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:22:37,588 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:22:37,593 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:37,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:22:37,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:22:37,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,621 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:22:37,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:37,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:22:37,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:22:37,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:22:37,632 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:22:37,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:22:37,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:22:37,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:22:37,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/1) ... [2023-10-12 17:22:37,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:37,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:37,669 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 17:22:37,704 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 17:22:37,712 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:22:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:22:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:22:37,712 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:22:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:22:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:22:37,713 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:22:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:22:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:22:37,713 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 17:22:37,760 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:22:37,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:22:37,853 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:22:37,867 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:22:37,868 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:22:37,870 INFO L201 PluginConnector]: Adding new model exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:37 BoogieIcfgContainer [2023-10-12 17:22:37,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:22:37,871 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:22:37,871 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:22:37,875 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:22:37,875 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:37,875 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:37" (1/2) ... [2023-10-12 17:22:37,877 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@563e304 and model type exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:22:37, skipping insertion in model container [2023-10-12 17:22:37,877 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:37,877 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:37" (2/2) ... [2023-10-12 17:22:37,878 INFO L332 chiAutomizerObserver]: Analyzing ICFG exp1x3.wvr.bpl [2023-10-12 17:22:37,927 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:22:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:22:37,965 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:22:37,965 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:22:37,969 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 4. Compared 17 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 17:22:37,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:22:37,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:37,975 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:22:37,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:37,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:38,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:38,011 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:22:38,012 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:22:38,012 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 4. Compared 17 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 17:22:38,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:22:38,165 INFO L134 LiptonReduction]: Checked pairs total: 37 [2023-10-12 17:22:38,165 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:22:38,181 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:22:38,181 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:22:38,181 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:22:38,181 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:22:38,181 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:22:38,182 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:22:38,182 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:22:38,182 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:22:38,182 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:22:38,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:38,188 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:38,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:38,188 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:38,193 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:22:38,194 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:22:38,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:38,198 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:38,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:38,198 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:38,203 INFO L748 eck$LassoCheckResult]: Stem: 28#[$Ultimate##0]true [33] $Ultimate##0-->L33: Formula: (and (= v_x2_6 v_x1_6) (< 0 v_x1_6)) InVars {x1=v_x1_6, x2=v_x2_6} OutVars{x1=v_x1_6, x2=v_x2_6} AuxVars[] AssignedVars[] 30#[L33]true [53] L33-->L16: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0] 32#[L33-1, L16]true [2023-10-12 17:22:38,203 INFO L750 eck$LassoCheckResult]: Loop: 32#[L33-1, L16]true [59] L16-->L16: Formula: (and (= v_x1_13 (* 2 v_x1_14)) (< v_x1_14 v_n_7)) InVars {n=v_n_7, x1=v_x1_14} OutVars{n=v_n_7, x1=v_x1_13} AuxVars[] AssignedVars[x1] 32#[L33-1, L16]true [2023-10-12 17:22:38,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2037, now seen corresponding path program 1 times [2023-10-12 17:22:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:38,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602266128] [2023-10-12 17:22:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:38,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:38,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:38,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash 90, now seen corresponding path program 1 times [2023-10-12 17:22:38,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:38,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609916420] [2023-10-12 17:22:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:38,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:38,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:38,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:38,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash 63206, now seen corresponding path program 1 times [2023-10-12 17:22:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:38,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106330136] [2023-10-12 17:22:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:38,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:38,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:38,412 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:38,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:38,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:38,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:38,413 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:38,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:38,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:38,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: exp1x3.wvr.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:22:38,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:38,414 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:38,436 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 17:22:38,452 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 17:22:38,501 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:38,501 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:38,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:38,646 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 17:22:38,649 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 17:22:38,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:38,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:38,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:38,679 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:22:38,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:38,688 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 17:22:38,693 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 17:22:38,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:38,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:38,749 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 17:22:38,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:38,751 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 17:22:38,755 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 17:22:38,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:38,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:38,829 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:38,833 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 17:22:38,834 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:38,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:38,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:38,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:38,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:38,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:38,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:38,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: exp1x3.wvr.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:22:38,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:38,835 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:38,837 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 17:22:38,847 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 17:22:38,896 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:38,900 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:38,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:38,905 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 17:22:38,917 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 17:22:38,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:38,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:38,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:38,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:38,932 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:22:38,933 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:22:38,948 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 17:22:38,951 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:38,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-10-12 17:22:38,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:38,959 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 17:22:38,961 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 17:22:38,963 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 17:22:38,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:38,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:38,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:38,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:38,976 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:22:38,976 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:22:39,001 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:39,030 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-10-12 17:22:39,030 INFO L444 ModelExtractionUtils]: 7 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:22:39,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:39,039 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 17:22:39,041 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 17:22:39,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:39,066 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2023-10-12 17:22:39,066 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:39,067 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, n) = -1*x1 + 1*n Supporting invariants [1*x1 - 1 >= 0] [2023-10-12 17:22:39,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-10-12 17:22:39,079 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-10-12 17:22:39,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:39,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2023-10-12 17:22:39,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:39,157 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:22:39,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:39,158 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 17:22:39,185 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-10-12 17:22:39,186 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:22:39,332 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 245 transitions. [2023-10-12 17:22:39,334 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:39,336 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 1 non-accepting loop states 2 accepting loop states [2023-10-12 17:22:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:22:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-10-12 17:22:39,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 144 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:22:39,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:39,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 144 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:22:39,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:39,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 144 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:22:39,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:39,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 192 transitions, 984 flow [2023-10-12 17:22:39,359 INFO L124 PetriNetUnfolderBase]: 31/63 cut-off events. [2023-10-12 17:22:39,359 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-10-12 17:22:39,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 63 events. 31/63 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 149 event pairs, 1 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 17:22:39,360 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 32 places, 192 transitions, 984 flow [2023-10-12 17:22:39,364 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 32 places, 192 transitions, 984 flow [2023-10-12 17:22:39,364 INFO L430 stractBuchiCegarLoop]: Abstraction has has 32 places, 192 transitions, 984 flow [2023-10-12 17:22:39,364 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:22:39,364 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 32 places, 192 transitions, 984 flow [2023-10-12 17:22:39,370 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:39,370 INFO L124 PetriNetUnfolderBase]: 18/31 cut-off events. [2023-10-12 17:22:39,370 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-10-12 17:22:39,371 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:39,371 INFO L748 eck$LassoCheckResult]: Stem: 28#[$Ultimate##0]true [33] $Ultimate##0-->L33: Formula: (and (= v_x2_6 v_x1_6) (< 0 v_x1_6)) InVars {x1=v_x1_6, x2=v_x2_6} OutVars{x1=v_x1_6, x2=v_x2_6} AuxVars[] AssignedVars[] 30#[L33]true [53] L33-->L16: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0] 32#[L33-1, L16]true [50] L33-1-->L24: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0] 96#[L34, L24, L16]true [2023-10-12 17:22:39,371 INFO L750 eck$LassoCheckResult]: Loop: 96#[L34, L24, L16]true [61] L24-->L24: Formula: (and (< v_x2_14 v_n_11) (= v_x2_13 (* 2 v_x2_14))) InVars {n=v_n_11, x2=v_x2_14} OutVars{n=v_n_11, x2=v_x2_13} AuxVars[] AssignedVars[x2] 96#[L34, L24, L16]true [61] L24-->L24: Formula: (and (< v_x2_14 v_n_11) (= v_x2_13 (* 2 v_x2_14))) InVars {n=v_n_11, x2=v_x2_14} OutVars{n=v_n_11, x2=v_x2_13} AuxVars[] AssignedVars[x2] 96#[L34, L24, L16]true [2023-10-12 17:22:39,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 63197, now seen corresponding path program 1 times [2023-10-12 17:22:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192776382] [2023-10-12 17:22:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:39,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:39,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:39,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2913, now seen corresponding path program 1 times [2023-10-12 17:22:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486848164] [2023-10-12 17:22:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:39,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:39,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:39,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash 60734269, now seen corresponding path program 1 times [2023-10-12 17:22:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074387858] [2023-10-12 17:22:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:39,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:39,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:39,458 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:39,459 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:39,459 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:39,459 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:39,459 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:39,459 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,459 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:39,459 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:39,459 INFO L133 ssoRankerPreferences]: Filename of dumped script: exp1x3.wvr.bpl_BEv2_Iteration2_Lasso [2023-10-12 17:22:39,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:39,459 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:39,461 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 17:22:39,470 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 17:22:39,473 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 17:22:39,476 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 17:22:39,524 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:39,524 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:39,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:39,529 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 17:22:39,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:39,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:39,557 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 17:22:39,572 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 17:22:39,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:39,681 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 17:22:39,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:39,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:39,731 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 17:22:39,804 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:39,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:39,809 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:39,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:39,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:39,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:39,809 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:39,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:39,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:39,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: exp1x3.wvr.bpl_BEv2_Iteration2_Lasso [2023-10-12 17:22:39,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:39,810 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:39,811 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 17:22:39,816 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 17:22:39,827 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 17:22:39,832 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 17:22:39,891 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:39,892 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:39,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:39,898 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 17:22:39,901 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 17:22:39,903 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 17:22:39,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:39,911 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:39,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:39,911 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:39,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:22:39,916 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:22:39,930 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:39,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:39,945 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 17:22:39,948 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 17:22:39,949 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 17:22:39,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:39,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:39,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:39,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:39,969 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:22:39,969 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:22:39,997 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:40,006 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-10-12 17:22:40,007 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-10-12 17:22:40,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:40,011 INFO L229 MonitoredProcess]: Starting monitored process 12 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 17:22:40,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-10-12 17:22:40,017 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:40,047 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2023-10-12 17:22:40,047 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:40,047 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, n) = -1*x2 + 1*n Supporting invariants [3*x2 - 2 >= 0] [2023-10-12 17:22:40,057 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 17:22:40,061 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-10-12 17:22:40,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:40,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:22:40,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:40,124 WARN L260 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-10-12 17:22:40,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:40,149 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 17:22:40,150 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2023-10-12 17:22:40,150 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 4 states, 4 states have (on average 1.25) 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 17:22:40,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-10-12 17:22:40,277 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 17:22:40,365 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 4 states, 4 states have (on average 1.25) 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 10 states and 296 transitions. [2023-10-12 17:22:40,365 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:40,387 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 2 non-accepting loop states 2 accepting loop states [2023-10-12 17:22:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) 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 17:22:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2023-10-12 17:22:40,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 172 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:22:40,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:40,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 172 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:22:40,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:40,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 172 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:22:40,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:40,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 4072 transitions, 29184 flow [2023-10-12 17:22:40,449 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:22:40,449 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-10-12 17:22:40,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 136 events. 67/136 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 485 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 17:22:40,450 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 52 places, 4072 transitions, 29184 flow [2023-10-12 17:22:40,506 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 52 places, 4072 transitions, 29184 flow [2023-10-12 17:22:40,506 INFO L430 stractBuchiCegarLoop]: Abstraction has has 52 places, 4072 transitions, 29184 flow [2023-10-12 17:22:40,507 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:22:40,507 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 places, 4072 transitions, 29184 flow [2023-10-12 17:22:40,541 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:22:40,541 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-10-12 17:22:40,541 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:22:40,547 INFO L201 PluginConnector]: Adding new model exp1x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:22:40 BoogieIcfgContainer [2023-10-12 17:22:40,547 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:22:40,548 INFO L158 Benchmark]: Toolchain (without parser) took 2960.37ms. Allocated memory was 176.2MB in the beginning and 249.6MB in the end (delta: 73.4MB). Free memory was 130.3MB in the beginning and 175.3MB in the end (delta: -45.1MB). Peak memory consumption was 29.8MB. Max. memory is 8.0GB. [2023-10-12 17:22:40,548 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 176.2MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:40,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.20ms. Allocated memory is still 176.2MB. Free memory was 130.1MB in the beginning and 128.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:22:40,549 INFO L158 Benchmark]: Boogie Preprocessor took 17.48ms. Allocated memory is still 176.2MB. Free memory was 128.6MB in the beginning and 127.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:40,549 INFO L158 Benchmark]: RCFGBuilder took 227.66ms. Allocated memory is still 176.2MB. Free memory was 127.5MB in the beginning and 119.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-10-12 17:22:40,550 INFO L158 Benchmark]: BuchiAutomizer took 2676.00ms. Allocated memory was 176.2MB in the beginning and 249.6MB in the end (delta: 73.4MB). Free memory was 118.8MB in the beginning and 175.3MB in the end (delta: -56.5MB). Peak memory consumption was 18.2MB. Max. memory is 8.0GB. [2023-10-12 17:22:40,551 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 0.22ms. Allocated memory is still 176.2MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.20ms. Allocated memory is still 176.2MB. Free memory was 130.1MB in the beginning and 128.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.48ms. Allocated memory is still 176.2MB. Free memory was 128.6MB in the beginning and 127.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.66ms. Allocated memory is still 176.2MB. Free memory was 127.5MB in the beginning and 119.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2676.00ms. Allocated memory was 176.2MB in the beginning and 249.6MB in the end (delta: 73.4MB). Free memory was 118.8MB in the beginning and 175.3MB in the end (delta: -56.5MB). Peak memory consumption was 18.2MB. 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 -1 * x1 + n and consists of 6 locations. One deterministic module has affine ranking function n + -1 * x2 and consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. 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, 157 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 99 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf92 smp100 dnf100 smp100 tf100 neg100 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.2s - 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: 0.2s, 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 17:22:40,579 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...