/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/mult-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:12:49,379 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:12:49,420 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 17:12:49,442 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:12:49,443 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:12:49,443 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:12:49,444 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:12:49,444 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:12:49,445 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:12:49,447 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:12:49,448 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:12:49,448 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:12:49,448 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:12:49,449 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:12:49,449 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:12:49,449 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:12:49,450 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:12:49,450 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:12:49,450 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:12:49,450 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:12:49,450 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:12:49,451 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:12:49,451 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:12:49,451 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:12:49,452 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:12:49,452 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:12:49,452 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:12:49,452 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:12:49,452 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:12:49,453 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:12:49,453 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:12:49,454 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:12:49,454 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:12:49,455 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:12:49,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:12:49,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:12:49,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:12:49,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:12:49,655 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:12:49,655 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:12:49,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl [2023-10-12 17:12:49,657 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl' [2023-10-12 17:12:49,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:12:49,681 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:12:49,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:49,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:12:49,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:12:49,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,703 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:12:49,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:49,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:12:49,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:12:49,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:12:49,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:12:49,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:12:49,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:12:49,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:12:49,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/1) ... [2023-10-12 17:12:49,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,746 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 17:12:49,751 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 17:12:49,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:12:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:12:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:12:49,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:12:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:12:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:12:49,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:12:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:12:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:12:49,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:12:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:12:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:12:49,771 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 17:12:49,805 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:12:49,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:12:49,936 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:12:49,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:12:49,947 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:12:49,951 INFO L201 PluginConnector]: Adding new model mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:49 BoogieIcfgContainer [2023-10-12 17:12:49,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:12:49,952 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:12:49,953 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:12:49,956 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:12:49,956 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:49,957 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:49" (1/2) ... [2023-10-12 17:12:49,958 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c1a3fb8 and model type mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:12:49, skipping insertion in model container [2023-10-12 17:12:49,958 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:49,958 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:49" (2/2) ... [2023-10-12 17:12:49,961 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-dist.wvr.bpl [2023-10-12 17:12:50,035 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:12:50,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:12:50,067 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:12:50,067 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:12:50,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-10-12 17:12:50,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:12:50,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2023-10-12 17:12:50,075 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:12:50,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:12:50,086 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:12:50,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 64 flow [2023-10-12 17:12:50,091 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:12:50,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:12:50,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-10-12 17:12:50,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-10-12 17:12:50,213 INFO L134 LiptonReduction]: Checked pairs total: 106 [2023-10-12 17:12:50,213 INFO L136 LiptonReduction]: Total number of compositions: 9 [2023-10-12 17:12:50,226 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:12:50,226 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:12:50,226 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:12:50,226 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:12:50,226 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:12:50,226 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:12:50,226 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:12:50,226 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:12:50,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:12:50,248 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 15 [2023-10-12 17:12:50,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:50,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:50,252 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:50,252 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:50,252 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:12:50,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 24 states, but on-demand construction may add more states [2023-10-12 17:12:50,254 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 15 [2023-10-12 17:12:50,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:50,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:50,254 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:50,254 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:50,257 INFO L748 eck$LassoCheckResult]: Stem: 36#[$Ultimate##0]don't care [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (<= 0 v_b_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_a_3) (<= 0 v_c_3)) InVars {x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} OutVars{x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} AuxVars[] AssignedVars[] 39#[L56]don't care [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L56-1, L23-1]don't care [2023-10-12 17:12:50,258 INFO L750 eck$LassoCheckResult]: Loop: 41#[L56-1, L23-1]don't care [90] L23-1-->L23-1: Formula: (and (= v_i_1_12 (+ v_i_1_13 1)) (< v_i_1_13 v_a_8) (= (+ v_c_13 v_x_1_14) v_x_1_13)) InVars {x_1=v_x_1_14, a=v_a_8, i_1=v_i_1_13, c=v_c_13} OutVars{x_1=v_x_1_13, a=v_a_8, i_1=v_i_1_12, c=v_c_13} AuxVars[] AssignedVars[x_1, i_1] 41#[L56-1, L23-1]don't care [2023-10-12 17:12:50,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2710, now seen corresponding path program 1 times [2023-10-12 17:12:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494702319] [2023-10-12 17:12:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,368 INFO L85 PathProgramCache]: Analyzing trace with hash 121, now seen corresponding path program 1 times [2023-10-12 17:12:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922168241] [2023-10-12 17:12:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 84100, now seen corresponding path program 1 times [2023-10-12 17:12:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295144568] [2023-10-12 17:12:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,446 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,446 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:50,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:12:50,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,447 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,457 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 17:12:50,466 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 17:12:50,498 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,498 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:50,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,502 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 17:12:50,503 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 17:12:50,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:50,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,527 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:12:50,528 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x_1=0, c=0} Honda state: {x_1=0, c=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:12:50,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:12:50,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,535 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 17:12:50,536 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 17:12:50,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:50,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,549 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 17:12:50,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,551 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 17:12:50,554 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 17:12:50,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:50,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,693 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:50,696 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 17:12:50,696 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,697 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,697 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:50,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:12:50,697 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,697 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,699 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 17:12:50,706 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 17:12:50,732 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,736 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:50,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,739 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 17:12:50,755 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 17:12:50,756 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 17:12:50,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:50,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:50,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:50,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:50,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:50,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:50,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:50,775 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:50,780 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 17:12:50,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,782 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 17:12:50,789 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 17:12:50,833 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 17:12:50,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:50,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:50,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:50,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:50,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:50,843 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:50,843 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:50,847 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:50,851 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:50,851 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:50,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,865 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 17:12:50,866 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 17:12:51,153 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:51,154 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:51,154 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:51,154 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(a, i_1) = 1*a - 1*i_1 Supporting invariants [] [2023-10-12 17:12:51,176 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 17:12:51,181 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:51,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,226 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,227 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 17:12:51,256 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 17:12:51,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 24 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 17:12:51,324 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 24 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 65 states and 193 transitions. Complement of second has 5 states. [2023-10-12 17:12:51,325 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 17:12:51,330 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 17:12:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2023-10-12 17:12:51,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:12:51,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:51,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:12:51,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 193 transitions. [2023-10-12 17:12:51,341 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 12 [2023-10-12 17:12:51,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 39 states and 120 transitions. [2023-10-12 17:12:51,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-10-12 17:12:51,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2023-10-12 17:12:51,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 120 transitions. [2023-10-12 17:12:51,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:51,346 INFO L219 hiAutomatonCegarLoop]: Abstraction has 39 states and 120 transitions. [2023-10-12 17:12:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 120 transitions. [2023-10-12 17:12:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2023-10-12 17:12:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 28 states have internal predecessors, (92), 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 17:12:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 92 transitions. [2023-10-12 17:12:51,365 INFO L241 hiAutomatonCegarLoop]: Abstraction has 29 states and 92 transitions. [2023-10-12 17:12:51,365 INFO L430 stractBuchiCegarLoop]: Abstraction has 29 states and 92 transitions. [2023-10-12 17:12:51,365 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:12:51,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 92 transitions. [2023-10-12 17:12:51,367 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 12 [2023-10-12 17:12:51,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:51,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:51,367 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:51,367 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:51,367 INFO L748 eck$LassoCheckResult]: Stem: 228#[$Ultimate##0]don't care [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (<= 0 v_b_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_a_3) (<= 0 v_c_3)) InVars {x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} OutVars{x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} AuxVars[] AssignedVars[] 206#[L56]don't care [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 208#[L56-1, L23-1]don't care [78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 214#[L23-1, L34-1, L57]don't care [2023-10-12 17:12:51,367 INFO L750 eck$LassoCheckResult]: Loop: 214#[L23-1, L34-1, L57]don't care [88] L34-1-->L34-1: Formula: (and (= (+ v_i_2_13 1) v_i_2_12) (= (+ v_c_11 v_x_2_14) v_x_2_13) (< v_i_2_13 v_b_8)) InVars {x_2=v_x_2_14, i_2=v_i_2_13, c=v_c_11, b=v_b_8} OutVars{x_2=v_x_2_13, i_2=v_i_2_12, c=v_c_11, b=v_b_8} AuxVars[] AssignedVars[x_2, i_2] 214#[L23-1, L34-1, L57]don't care [2023-10-12 17:12:51,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 84088, now seen corresponding path program 1 times [2023-10-12 17:12:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:51,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150282585] [2023-10-12 17:12:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:51,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash 119, now seen corresponding path program 1 times [2023-10-12 17:12:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:51,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937376346] [2023-10-12 17:12:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:51,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2606816, now seen corresponding path program 1 times [2023-10-12 17:12:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:51,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191814070] [2023-10-12 17:12:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:51,417 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:51,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:51,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:51,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:51,417 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:51,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:51,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:51,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:12:51,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:51,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:51,418 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 17:12:51,423 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 17:12:51,442 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:51,442 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:51,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,443 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 17:12:51,447 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 17:12:51,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:51,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,462 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 17:12:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,463 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 17:12:51,465 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 17:12:51,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:51,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,562 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:51,565 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 17:12:51,565 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:51,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:51,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:51,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:51,565 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:51,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:51,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:51,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:12:51,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:51,566 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:51,567 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 17:12:51,572 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 17:12:51,595 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:51,595 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:51,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,604 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 17:12:51,619 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 17:12:51,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:51,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:51,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:51,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:51,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:51,632 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 17:12:51,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:51,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:51,653 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:51,657 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:51,657 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,660 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 17:12:51,661 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 17:12:51,662 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:51,662 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:51,662 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:51,662 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(b, i_2) = 1*b - 1*i_2 Supporting invariants [] [2023-10-12 17:12:51,665 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 17:12:51,673 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:51,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,710 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,710 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 17:12:51,711 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 17:12:51,711 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 92 transitions. cyclomatic complexity: 81 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 17:12:51,738 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 92 transitions. cyclomatic complexity: 81. 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 85 states and 277 transitions. Complement of second has 4 states. [2023-10-12 17:12:51,738 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 17:12:51,739 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 17:12:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2023-10-12 17:12:51,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:51,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:51,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:12:51,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 277 transitions. [2023-10-12 17:12:51,747 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:12:51,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 51 states and 164 transitions. [2023-10-12 17:12:51,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-10-12 17:12:51,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-10-12 17:12:51,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 164 transitions. [2023-10-12 17:12:51,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:51,748 INFO L219 hiAutomatonCegarLoop]: Abstraction has 51 states and 164 transitions. [2023-10-12 17:12:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 164 transitions. [2023-10-12 17:12:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2023-10-12 17:12:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 3.4523809523809526) internal successors, (145), 41 states have internal predecessors, (145), 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 17:12:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 145 transitions. [2023-10-12 17:12:51,753 INFO L241 hiAutomatonCegarLoop]: Abstraction has 42 states and 145 transitions. [2023-10-12 17:12:51,753 INFO L430 stractBuchiCegarLoop]: Abstraction has 42 states and 145 transitions. [2023-10-12 17:12:51,753 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:12:51,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 145 transitions. [2023-10-12 17:12:51,754 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:12:51,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:51,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:51,754 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:12:51,754 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:51,755 INFO L748 eck$LassoCheckResult]: Stem: 401#[$Ultimate##0]don't care [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (<= 0 v_b_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_a_3) (<= 0 v_c_3)) InVars {x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} OutVars{x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} AuxVars[] AssignedVars[] 373#[L56]don't care [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 375#[L56-1, L23-1]don't care [78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 383#[L23-1, L34-1, L57]don't care [81] L57-->L45-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 413#[L23-1, L58, L45-1, L34-1]don't care [2023-10-12 17:12:51,755 INFO L750 eck$LassoCheckResult]: Loop: 413#[L23-1, L58, L45-1, L34-1]don't care [92] L45-1-->L45-1: Formula: (and (< v_i_3_13 (+ v_a_12 v_b_12)) (= (+ v_c_15 v_x_3_14) v_x_3_13) (= (+ v_i_3_13 1) v_i_3_12)) InVars {a=v_a_12, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_15, b=v_b_12} OutVars{a=v_a_12, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_15, b=v_b_12} AuxVars[] AssignedVars[x_3, i_3] 413#[L23-1, L58, L45-1, L34-1]don't care [2023-10-12 17:12:51,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2606809, now seen corresponding path program 1 times [2023-10-12 17:12:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:51,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975299688] [2023-10-12 17:12:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:51,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 123, now seen corresponding path program 1 times [2023-10-12 17:12:51,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666042097] [2023-10-12 17:12:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:51,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:51,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash 80811171, now seen corresponding path program 1 times [2023-10-12 17:12:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:51,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871626319] [2023-10-12 17:12:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:51,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:51,801 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:51,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:51,801 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:51,801 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:51,801 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:51,801 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:51,801 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:51,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:12:51,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:51,802 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:51,802 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 17:12:51,807 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 17:12:51,824 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:51,824 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:51,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,825 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 17:12:51,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:51,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,855 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 17:12:51,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:51,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,869 INFO L229 MonitoredProcess]: Starting monitored process 13 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 17:12:51,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-10-12 17:12:51,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:51,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:53,675 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:53,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:53,679 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:53,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:53,679 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:53,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:53,679 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:53,679 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:53,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:53,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:12:53,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:53,679 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:53,680 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 17:12:53,696 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 17:12:53,714 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:53,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:53,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,716 INFO L229 MonitoredProcess]: Starting monitored process 14 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 17:12:53,727 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 17:12:53,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:53,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:53,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:53,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:53,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:53,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:53,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:53,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-10-12 17:12:53,748 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:53,751 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:53,751 INFO L444 ModelExtractionUtils]: 0 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:53,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,754 INFO L229 MonitoredProcess]: Starting monitored process 15 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 17:12:53,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-10-12 17:12:53,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:53,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:53,756 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:53,756 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(b, i_3, a) = 1*b - 1*i_3 + 1*a Supporting invariants [] [2023-10-12 17:12:53,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:53,759 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:53,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:53,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:53,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:53,787 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:53,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:53,788 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 17:12:53,788 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 17:12:53,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 145 transitions. cyclomatic complexity: 122 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 17:12:53,816 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 145 transitions. cyclomatic complexity: 122. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 98 states and 307 transitions. Complement of second has 4 states. [2023-10-12 17:12:53,816 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 17:12:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 17:12:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2023-10-12 17:12:53,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:53,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:53,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:12:53,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:53,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:12:53,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:53,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 307 transitions. [2023-10-12 17:12:53,819 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:53,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 0 states and 0 transitions. [2023-10-12 17:12:53,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:12:53,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:12:53,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:12:53,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:12:53,819 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:53,819 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:53,819 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:53,819 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:12:53,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:12:53,819 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:53,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:12:53,823 INFO L201 PluginConnector]: Adding new model mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:12:53 BoogieIcfgContainer [2023-10-12 17:12:53,823 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:12:53,824 INFO L158 Benchmark]: Toolchain (without parser) took 4142.63ms. Allocated memory was 208.7MB in the beginning and 276.8MB in the end (delta: 68.2MB). Free memory was 163.8MB in the beginning and 172.6MB in the end (delta: -8.8MB). Peak memory consumption was 57.9MB. Max. memory is 8.0GB. [2023-10-12 17:12:53,824 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.20ms. Allocated memory is still 208.7MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:53,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.70ms. Allocated memory is still 208.7MB. Free memory was 163.8MB in the beginning and 162.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:53,825 INFO L158 Benchmark]: Boogie Preprocessor took 19.46ms. Allocated memory is still 208.7MB. Free memory was 162.1MB in the beginning and 161.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:53,825 INFO L158 Benchmark]: RCFGBuilder took 226.53ms. Allocated memory is still 208.7MB. Free memory was 161.0MB in the beginning and 151.0MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:12:53,825 INFO L158 Benchmark]: BuchiAutomizer took 3870.96ms. Allocated memory was 208.7MB in the beginning and 276.8MB in the end (delta: 68.2MB). Free memory was 150.8MB in the beginning and 172.6MB in the end (delta: -21.8MB). Peak memory consumption was 45.3MB. Max. memory is 8.0GB. [2023-10-12 17:12:53,827 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 0.20ms. Allocated memory is still 208.7MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.70ms. Allocated memory is still 208.7MB. Free memory was 163.8MB in the beginning and 162.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.46ms. Allocated memory is still 208.7MB. Free memory was 162.1MB in the beginning and 161.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 226.53ms. Allocated memory is still 208.7MB. Free memory was 161.0MB in the beginning and 151.0MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3870.96ms. Allocated memory was 208.7MB in the beginning and 276.8MB in the end (delta: 68.2MB). Free memory was 150.8MB in the beginning and 172.6MB in the end (delta: -21.8MB). Peak memory consumption was 45.3MB. 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 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function a + -1 * i_1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i_2 + b and consists of 3 locations. One deterministic module has affine ranking function -1 * i_3 + b + a and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 3 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp67 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s InitialAbstractionConstructionTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 30 PlacesBefore, 22 PlacesAfterwards, 23 TransitionsBefore, 15 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 106, independent: 106, independent conditional: 0, independent unconditional: 106, 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: 82, independent: 82, independent conditional: 0, independent unconditional: 82, 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: 82, independent: 82, independent conditional: 0, independent unconditional: 82, 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: 106, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 82, unknown conditional: 0, unknown unconditional: 82] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, 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 17:12:53,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-10-12 17:12:54,041 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 17:12:54,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-10-12 17:12:54,439 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...