/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_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:13:31,204 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:13:31,316 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 17:13:31,331 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:13:31,331 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:13:31,331 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:13:31,332 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:13:31,333 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:13:31,333 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:13:31,333 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:13:31,333 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:13:31,334 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:13:31,334 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:13:31,334 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:13:31,334 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:13:31,334 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:13:31,335 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:13:31,335 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:13:31,335 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:13:31,335 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:13:31,336 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:13:31,338 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:13:31,338 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:13:31,338 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:13:31,341 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:13:31,341 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:13:31,342 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:13:31,343 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:13:31,343 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:13:31,343 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:13:31,344 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:13:31,344 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:13:31,344 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:13:31,346 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:13:31,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:13:31,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:13:31,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:13:31,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:13:31,526 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:13:31,526 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:13:31,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2.wvr.bpl [2023-10-12 17:13:31,528 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2.wvr.bpl' [2023-10-12 17:13:31,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:13:31,544 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:13:31,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:31,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:13:31,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:13:31,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,565 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:13:31,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:31,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:13:31,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:13:31,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:13:31,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:13:31,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:13:31,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:13:31,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:13:31,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/1) ... [2023-10-12 17:13:31,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:31,618 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 17:13:31,632 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 17:13:31,654 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:13:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:13:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:13:31,657 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:13:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:13:31,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:13:31,658 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:13:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:13:31,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:13:31,659 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 17:13:31,692 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:13:31,693 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:13:31,804 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:13:31,808 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:13:31,809 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:13:31,810 INFO L201 PluginConnector]: Adding new model misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:31 BoogieIcfgContainer [2023-10-12 17:13:31,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:13:31,810 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:13:31,811 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:13:31,813 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:13:31,813 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:31,814 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:31" (1/2) ... [2023-10-12 17:13:31,814 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47f67796 and model type misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:13:31, skipping insertion in model container [2023-10-12 17:13:31,815 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:31,815 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:31" (2/2) ... [2023-10-12 17:13:31,816 INFO L332 chiAutomizerObserver]: Analyzing ICFG misc-2.wvr.bpl [2023-10-12 17:13:31,854 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:13:31,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 31 transitions, 78 flow [2023-10-12 17:13:31,888 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-10-12 17:13:31,889 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:13:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-10-12 17:13:31,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 31 transitions, 78 flow [2023-10-12 17:13:31,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2023-10-12 17:13:31,897 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:13:31,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 27 transitions, 66 flow [2023-10-12 17:13:31,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 27 transitions, 66 flow [2023-10-12 17:13:31,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 66 flow [2023-10-12 17:13:31,917 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-10-12 17:13:31,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:13:31,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-10-12 17:13:31,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 198 [2023-10-12 17:13:32,567 INFO L134 LiptonReduction]: Checked pairs total: 149 [2023-10-12 17:13:32,567 INFO L136 LiptonReduction]: Total number of compositions: 20 [2023-10-12 17:13:32,583 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:13:32,584 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:13:32,584 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:13:32,584 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:13:32,584 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:13:32,584 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:13:32,584 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:13:32,584 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:13:32,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:13:32,608 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:13:32,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:32,608 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:32,612 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:32,612 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:32,612 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:13:32,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 12 states, but on-demand construction may add more states [2023-10-12 17:13:32,613 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:13:32,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:32,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:32,613 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:32,613 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:32,617 INFO L748 eck$LassoCheckResult]: Stem: 35#[$Ultimate##0]don't care [65] $Ultimate##0-->L54: Formula: (and (= v_i2_5 v_pos_9) (= v_i1_5 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_5, pos=v_pos_9, i2=v_i2_5} OutVars{i1=v_i1_5, pos=v_pos_9, i2=v_i2_5} AuxVars[] AssignedVars[] 38#[L54]don't care [88] L54-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 40#[L54-1, L19]don't care [2023-10-12 17:13:32,617 INFO L750 eck$LassoCheckResult]: Loop: 40#[L54-1, L19]don't care [112] L19-->L19: Formula: (let ((.cse0 (not v_d1_24))) (and (or (and v_d1_24 (= v_pos_99 (+ v_pos_100 1))) (and (= v_pos_100 (+ v_pos_99 1)) .cse0)) (or (and v_d1_23 .cse0) (and (not v_d1_23) v_d1_24)) (= v_i1_18 (+ v_i1_19 1)) (< v_i1_19 (* v_N_23 2)))) InVars {N=v_N_23, d1=v_d1_24, i1=v_i1_19, pos=v_pos_100} OutVars{N=v_N_23, d1=v_d1_23, i1=v_i1_18, pos=v_pos_99} AuxVars[] AssignedVars[d1, i1, pos] 40#[L54-1, L19]don't care [2023-10-12 17:13:32,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 3064, now seen corresponding path program 1 times [2023-10-12 17:13:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:32,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243412534] [2023-10-12 17:13:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:32,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:32,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:32,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 143, now seen corresponding path program 1 times [2023-10-12 17:13:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921792838] [2023-10-12 17:13:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:32,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:32,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:32,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 95096, now seen corresponding path program 1 times [2023-10-12 17:13:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598053047] [2023-10-12 17:13:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:32,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:32,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:32,866 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:32,866 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:32,866 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:32,866 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:32,866 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:13:32,866 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:32,867 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:32,867 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:32,867 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:13:32,867 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:32,867 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:32,879 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 17:13:32,910 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 17:13:32,984 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:32,985 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:13:32,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:32,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:32,988 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 17:13:32,991 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 17:13:32,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:32,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:33,021 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 17:13:33,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,025 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 17:13:33,028 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 17:13:33,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:13:33,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:33,057 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:13:33,063 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 17:13:33,063 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:33,063 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:33,063 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:33,063 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:33,063 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:33,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:33,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:33,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:13:33,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:33,064 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:33,065 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 17:13:33,094 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 17:13:33,159 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:33,162 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:33,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,165 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 17:13:33,168 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 17:13:33,169 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 17:13:33,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:33,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:33,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:33,176 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-10-12 17:13:33,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:33,179 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-10-12 17:13:33,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:33,197 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:33,201 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 17:13:33,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,205 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 17:13:33,211 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 17:13:33,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:33,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:33,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:33,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:33,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:33,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:33,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:33,223 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 17:13:33,233 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:33,238 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:13:33,238 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:13:33,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,243 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 17:13:33,244 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 17:13:33,246 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:33,246 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:13:33,246 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:33,246 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N) = -1*i1 + 2*N Supporting invariants [] [2023-10-12 17:13:33,252 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 17:13:33,254 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:33,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:33,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:33,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:33,313 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:33,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:33,314 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 17:13:33,335 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 17:13:33,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 12 states, but on-demand construction may add more states Second 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 17:13:33,375 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 12 states, but on-demand construction may add more states. Second 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 29 states and 59 transitions. Complement of second has 5 states. [2023-10-12 17:13:33,377 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 17:13:33,381 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 17:13:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-10-12 17:13:33,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:13:33,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:33,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:13:33,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:33,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:13:33,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:33,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 59 transitions. [2023-10-12 17:13:33,389 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:13:33,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 26 transitions. [2023-10-12 17:13:33,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:13:33,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-10-12 17:13:33,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 26 transitions. [2023-10-12 17:13:33,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:13:33,395 INFO L219 hiAutomatonCegarLoop]: Abstraction has 12 states and 26 transitions. [2023-10-12 17:13:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 26 transitions. [2023-10-12 17:13:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-10-12 17:13:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 17:13:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 22 transitions. [2023-10-12 17:13:33,410 INFO L241 hiAutomatonCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:13:33,410 INFO L430 stractBuchiCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:13:33,411 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:13:33,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 22 transitions. [2023-10-12 17:13:33,412 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:13:33,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:33,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:33,412 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:13:33,412 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:33,413 INFO L748 eck$LassoCheckResult]: Stem: 133#[$Ultimate##0]don't care [65] $Ultimate##0-->L54: Formula: (and (= v_i2_5 v_pos_9) (= v_i1_5 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_5, pos=v_pos_9, i2=v_i2_5} OutVars{i1=v_i1_5, pos=v_pos_9, i2=v_i2_5} AuxVars[] AssignedVars[] 119#[L54]don't care [88] L54-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 121#[L54-1, L19]don't care [91] L54-1-->L36: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 123#[L19, L55, L36]don't care [2023-10-12 17:13:33,413 INFO L750 eck$LassoCheckResult]: Loop: 123#[L19, L55, L36]don't care [113] L36-->L36: Formula: (let ((.cse0 (< v_i2_In_1 (* 2 v_N_In_1))) (.cse1 (= (+ v_i2_In_1 1) v_i2_Out_2))) (or (and .cse0 (= v_pos_In_3 (+ v_pos_Out_6 2)) v_d2_Out_2 (not v_d2_In_1) .cse1) (and (= v_pos_Out_6 (+ v_pos_In_3 2)) (not v_d2_Out_2) .cse0 v_d2_In_1 .cse1))) InVars {i2=v_i2_In_1, pos=v_pos_In_3, d2=v_d2_In_1, N=v_N_In_1} OutVars{i2=v_i2_Out_2, pos=v_pos_Out_6, d2=v_d2_Out_2, N=v_N_In_1} AuxVars[] AssignedVars[d2, i2, pos] 123#[L19, L55, L36]don't care [2023-10-12 17:13:33,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash 95075, now seen corresponding path program 1 times [2023-10-12 17:13:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:33,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106257610] [2023-10-12 17:13:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:33,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:33,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:33,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 144, now seen corresponding path program 1 times [2023-10-12 17:13:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:33,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97066293] [2023-10-12 17:13:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:33,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:33,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:33,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:33,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2947438, now seen corresponding path program 1 times [2023-10-12 17:13:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909826832] [2023-10-12 17:13:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:33,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:33,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:33,521 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:33,521 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:33,521 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:33,521 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:33,521 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:13:33,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:33,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:33,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:13:33,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:33,521 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:33,522 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 17:13:33,527 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 17:13:33,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:33,605 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:13:33,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,607 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 17:13:33,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:33,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:33,623 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 17:13:33,645 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 17:13:33,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,646 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 17:13:33,649 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 17:13:33,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:13:33,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:33,746 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:13:33,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-10-12 17:13:33,750 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:33,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:33,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:33,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:33,750 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:33,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:33,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:33,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:13:33,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:33,750 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:33,758 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 17:13:33,777 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 17:13:33,781 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 17:13:33,876 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:33,876 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:33,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,877 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 17:13:33,880 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 17:13:33,881 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 17:13:33,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:33,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:33,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:33,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:33,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:33,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:33,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:33,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:33,908 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:13:33,908 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:13:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,912 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 17:13:33,915 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 17:13:33,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:33,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:13:33,916 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:33,916 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N) = -1*i2 + 2*N Supporting invariants [] [2023-10-12 17:13:33,920 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 17:13:33,921 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:33,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:33,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:33,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:33,942 WARN L260 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 3 conjunts are in the unsatisfiable core [2023-10-12 17:13:33,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:33,942 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 17:13:33,943 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 17:13:33,943 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 22 transitions. cyclomatic complexity: 17 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:33,955 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 22 transitions. cyclomatic complexity: 17. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 40 transitions. Complement of second has 4 states. [2023-10-12 17:13:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:13:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2023-10-12 17:13:33,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:13:33,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:33,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:13:33,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:33,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:13:33,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:33,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 40 transitions. [2023-10-12 17:13:33,958 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:13:33,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2023-10-12 17:13:33,958 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:13:33,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:13:33,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:13:33,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:13:33,958 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:33,958 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:33,959 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:33,959 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:13:33,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:13:33,959 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:13:33,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:13:33,963 INFO L201 PluginConnector]: Adding new model misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:13:33 BoogieIcfgContainer [2023-10-12 17:13:33,963 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:13:33,964 INFO L158 Benchmark]: Toolchain (without parser) took 2420.00ms. Allocated memory was 212.9MB in the beginning and 255.9MB in the end (delta: 43.0MB). Free memory was 168.3MB in the beginning and 214.1MB in the end (delta: -45.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:13:33,964 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.22ms. Allocated memory is still 212.9MB. Free memory was 169.5MB in the beginning and 169.3MB in the end (delta: 152.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:13:33,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.47ms. Allocated memory is still 212.9MB. Free memory was 168.3MB in the beginning and 166.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-10-12 17:13:33,964 INFO L158 Benchmark]: Boogie Preprocessor took 15.83ms. Allocated memory is still 212.9MB. Free memory was 166.8MB in the beginning and 165.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:13:33,965 INFO L158 Benchmark]: RCFGBuilder took 225.46ms. Allocated memory is still 212.9MB. Free memory was 165.6MB in the beginning and 186.3MB in the end (delta: -20.7MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. [2023-10-12 17:13:33,965 INFO L158 Benchmark]: BuchiAutomizer took 2152.68ms. Allocated memory was 212.9MB in the beginning and 255.9MB in the end (delta: 43.0MB). Free memory was 186.0MB in the beginning and 214.1MB in the end (delta: -28.0MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2023-10-12 17:13:33,966 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 212.9MB. Free memory was 169.5MB in the beginning and 169.3MB in the end (delta: 152.6kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.47ms. Allocated memory is still 212.9MB. Free memory was 168.3MB in the beginning and 166.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.83ms. Allocated memory is still 212.9MB. Free memory was 166.8MB in the beginning and 165.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 225.46ms. Allocated memory is still 212.9MB. Free memory was 165.6MB in the beginning and 186.3MB in the end (delta: -20.7MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. * BuchiAutomizer took 2152.68ms. Allocated memory was 212.9MB in the beginning and 255.9MB in the end (delta: 43.0MB). Free memory was 186.0MB in the beginning and 214.1MB in the end (delta: -28.0MB). Peak memory consumption was 13.9MB. 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 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 2 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp112 ukn59 mio100 lsp100 div100 bol136 ite100 ukn100 eq135 hnf100 smp100 dnf152 smp51 tf105 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.7s - 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: 0.7s, 30 PlacesBefore, 16 PlacesAfterwards, 27 TransitionsBefore, 11 TransitionsAfterwards, 198 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 20 TotalNumberOfCompositions, 149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 149, independent: 149, independent conditional: 0, independent unconditional: 149, 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: 123, independent: 123, independent conditional: 0, independent unconditional: 123, 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: 123, independent: 115, independent conditional: 0, independent unconditional: 115, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, independent: 44, independent conditional: 0, independent unconditional: 44, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 149, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 123, unknown conditional: 0, unknown unconditional: 123] , 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 17:13:33,989 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 17:13:34,193 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...