/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/unroll-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:12:52,422 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:12:52,479 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 17:12:52,503 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:12:52,504 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:12:52,504 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:12:52,506 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:12:52,506 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:12:52,507 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:12:52,509 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:12:52,510 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:12:52,510 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:12:52,510 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:12:52,511 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:12:52,512 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:12:52,512 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:12:52,512 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:12:52,512 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:12:52,512 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:12:52,512 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:12:52,512 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:12:52,513 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:12:52,513 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:12:52,513 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:12:52,513 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:12:52,513 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:12:52,513 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:12:52,514 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:12:52,514 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:12:52,514 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:12:52,515 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:12:52,515 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:12:52,515 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:12:52,516 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:12:52,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:12:52,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:12:52,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:12:52,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:12:52,726 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:12:52,727 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:12:52,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-2.wvr.bpl [2023-10-12 17:12:52,728 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-2.wvr.bpl' [2023-10-12 17:12:52,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:12:52,747 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:12:52,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:52,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:12:52,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:12:52,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,763 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:12:52,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:52,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:12:52,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:12:52,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:12:52,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:12:52,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:12:52,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:12:52,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:12:52,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/1) ... [2023-10-12 17:12:52,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:52,826 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 17:12:52,848 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 17:12:52,869 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:12:52,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:12:52,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:12:52,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:12:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:12:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:12:52,873 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:12:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:12:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:12:52,874 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 17:12:52,908 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:12:52,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:12:53,042 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:12:53,076 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:12:53,076 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-10-12 17:12:53,077 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2023-10-12 17:12:53,077 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2023-10-12 17:12:53,078 INFO L201 PluginConnector]: Adding new model unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:53 BoogieIcfgContainer [2023-10-12 17:12:53,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:12:53,079 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:12:53,079 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:12:53,089 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:12:53,089 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:53,090 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:52" (1/2) ... [2023-10-12 17:12:53,091 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@113cd175 and model type unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:12:53, skipping insertion in model container [2023-10-12 17:12:53,091 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:53,091 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:53" (2/2) ... [2023-10-12 17:12:53,093 INFO L332 chiAutomizerObserver]: Analyzing ICFG unroll-2.wvr.bpl [2023-10-12 17:12:53,178 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:12:53,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 17 transitions, 50 flow [2023-10-12 17:12:53,212 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-10-12 17:12:53,212 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:53,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 2/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 8. Up to 2 conditions per place. [2023-10-12 17:12:53,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 17 transitions, 50 flow [2023-10-12 17:12:53,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 13 transitions, 38 flow [2023-10-12 17:12:53,219 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:12:53,229 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 13 transitions, 38 flow [2023-10-12 17:12:53,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 13 transitions, 38 flow [2023-10-12 17:12:53,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 13 transitions, 38 flow [2023-10-12 17:12:53,234 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-10-12 17:12:53,234 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:53,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 2/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 8. Up to 2 conditions per place. [2023-10-12 17:12:53,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 16 [2023-10-12 17:12:53,269 INFO L134 LiptonReduction]: Checked pairs total: 18 [2023-10-12 17:12:53,269 INFO L136 LiptonReduction]: Total number of compositions: 3 [2023-10-12 17:12:53,286 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:12:53,287 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:12:53,287 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:12:53,287 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:12:53,287 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:12:53,288 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:12:53,288 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:12:53,289 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:12:53,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:12:53,307 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:12:53,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:53,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:53,310 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:53,310 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:53,311 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:12:53,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 12 states, but on-demand construction may add more states [2023-10-12 17:12:53,312 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:12:53,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:53,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:53,312 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:53,312 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:53,315 INFO L748 eck$LassoCheckResult]: Stem: 23#[$Ultimate##0]don't care [43] $Ultimate##0-->L48: Formula: (and (= v_i1_5 0) (= v_i2_7 v_i1_5) (= v_i1_5 v_x1_3) (= v_i1_5 v_x2_5)) InVars {i1=v_i1_5, i2=v_i2_7, x1=v_x1_3, x2=v_x2_5} OutVars{i1=v_i1_5, i2=v_i2_7, x1=v_x1_3, x2=v_x2_5} AuxVars[] AssignedVars[] 26#[L48]don't care [54] L48-->L20: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 28#[L20, L48-1]don't care [2023-10-12 17:12:53,316 INFO L750 eck$LassoCheckResult]: Loop: 28#[L20, L48-1]don't care [49] L20-->L20: Formula: (and (= (+ v_i1_11 1) v_i1_10) (= v_x1_9 (select v_f_12 v_x1_10)) (< v_i1_11 (* v_n_13 2))) InVars {i1=v_i1_11, x1=v_x1_10, n=v_n_13, f=v_f_12} OutVars{i1=v_i1_10, x1=v_x1_9, n=v_n_13, f=v_f_12} AuxVars[] AssignedVars[i1, x1] 28#[L20, L48-1]don't care [2023-10-12 17:12:53,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2348, now seen corresponding path program 1 times [2023-10-12 17:12:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793221672] [2023-10-12 17:12:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:53,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:53,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:53,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 80, now seen corresponding path program 1 times [2023-10-12 17:12:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:53,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331779523] [2023-10-12 17:12:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:53,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:53,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:53,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 72837, now seen corresponding path program 1 times [2023-10-12 17:12:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602430629] [2023-10-12 17:12:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:53,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:53,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:53,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:53,613 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:53,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:53,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:53,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:53,613 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:53,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:53,613 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:53,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: unroll-2.wvr.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:12:53,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:53,614 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:53,623 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 17:12:53,634 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 17:12:53,637 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 17:12:53,639 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 17:12:53,645 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 17:12:53,697 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:53,700 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:53,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,703 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 17:12:53,709 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 17:12:53,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:53,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:53,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:53,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:53,721 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:53,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:53,724 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 17:12:53,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:53,753 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 17:12:53,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,761 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 17:12:53,763 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 17:12:53,765 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 17:12:53,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:53,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:53,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:53,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:53,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:53,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:53,788 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:53,793 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 17:12:53,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,796 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 17:12:53,797 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 17:12:53,802 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 17:12:53,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:53,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:53,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:53,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:53,811 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:53,811 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:53,826 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:53,830 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 17:12:53,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,832 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 17:12:53,834 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 17:12:53,876 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 17:12:53,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:53,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:53,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:53,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:53,886 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:53,887 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:53,897 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:53,902 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:53,902 INFO L444 ModelExtractionUtils]: 6 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:53,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:53,913 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 17:12:53,914 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 17:12:54,120 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:54,153 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:12:54,153 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:54,154 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(n, i1) = 2*n - 1*i1 Supporting invariants [] [2023-10-12 17:12:54,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:54,163 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:54,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:54,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:54,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:54,230 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:54,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:54,234 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 17:12:54,276 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 17:12:54,278 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 12 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:54,336 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 12 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 59 transitions. Complement of second has 5 states. [2023-10-12 17:12:54,338 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 17:12:54,343 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 17:12:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-10-12 17:12:54,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:12:54,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:54,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:54,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:54,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:12:54,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:54,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 59 transitions. [2023-10-12 17:12:54,352 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:12:54,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 26 transitions. [2023-10-12 17:12:54,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:12:54,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-10-12 17:12:54,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 26 transitions. [2023-10-12 17:12:54,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:54,356 INFO L219 hiAutomatonCegarLoop]: Abstraction has 12 states and 26 transitions. [2023-10-12 17:12:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 26 transitions. [2023-10-12 17:12:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-10-12 17:12:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 22 transitions. [2023-10-12 17:12:54,390 INFO L241 hiAutomatonCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:12:54,390 INFO L430 stractBuchiCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:12:54,390 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:12:54,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 22 transitions. [2023-10-12 17:12:54,390 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:12:54,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:54,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:54,391 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:54,391 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:54,391 INFO L748 eck$LassoCheckResult]: Stem: 121#[$Ultimate##0]don't care [43] $Ultimate##0-->L48: Formula: (and (= v_i1_5 0) (= v_i2_7 v_i1_5) (= v_i1_5 v_x1_3) (= v_i1_5 v_x2_5)) InVars {i1=v_i1_5, i2=v_i2_7, x1=v_x1_3, x2=v_x2_5} OutVars{i1=v_i1_5, i2=v_i2_7, x1=v_x1_3, x2=v_x2_5} AuxVars[] AssignedVars[] 123#[L48]don't care [54] L48-->L20: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 113#[L20, L48-1]don't care [57] L48-1-->L33: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 117#[L20, L49, L33]don't care [2023-10-12 17:12:54,391 INFO L750 eck$LassoCheckResult]: Loop: 117#[L20, L49, L33]don't care [51] L33-->L33: Formula: (and (= (select v_f_14 (select v_f_14 v_x2_21)) v_x2_19) (= (+ 2 v_i2_24) v_i2_22) (< v_i2_24 (* v_n_15 2))) InVars {i2=v_i2_24, n=v_n_15, f=v_f_14, x2=v_x2_21} OutVars{i2=v_i2_22, n=v_n_15, f=v_f_14, x2=v_x2_19} AuxVars[] AssignedVars[x2, i2] 117#[L20, L49, L33]don't care [2023-10-12 17:12:54,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash 72845, now seen corresponding path program 1 times [2023-10-12 17:12:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:54,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962946069] [2023-10-12 17:12:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:54,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:54,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:54,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash 82, now seen corresponding path program 1 times [2023-10-12 17:12:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736207105] [2023-10-12 17:12:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:54,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:54,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:54,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2258246, now seen corresponding path program 1 times [2023-10-12 17:12:54,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:54,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132731369] [2023-10-12 17:12:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:54,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:54,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:54,469 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:54,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:54,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:54,469 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:54,469 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:54,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:54,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:54,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:54,470 INFO L133 ssoRankerPreferences]: Filename of dumped script: unroll-2.wvr.bpl_BEv2_Iteration2_Lasso [2023-10-12 17:12:54,470 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:54,470 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:54,471 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 17:12:54,476 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:54,479 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 17:12:54,481 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 17:12:54,496 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 17:12:54,501 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 17:12:54,505 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 17:12:54,571 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:54,571 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:54,587 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 17:12:54,600 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 17:12:54,622 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 17:12:54,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:54,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:54,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:54,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:54,630 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:54,630 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:54,638 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:54,675 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 17:12:54,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:54,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:54,685 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 17:12:54,686 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 17:12:54,690 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 17:12:54,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:54,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:54,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:54,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:54,697 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:54,697 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:54,736 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:54,741 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 17:12:54,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:54,743 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 17:12:54,757 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 17:12:54,759 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 17:12:54,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:54,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:54,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:54,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:54,768 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:54,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:54,789 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:54,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:54,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:54,948 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 17:12:54,950 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 17:12:54,951 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 17:12:54,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:54,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:54,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:54,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:54,959 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:54,959 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:54,975 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:54,978 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 17:12:54,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:54,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:54,980 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 17:12:54,981 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 17:12:54,983 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 17:12:54,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:54,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:54,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:54,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:54,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:54,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:54,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:55,013 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:55,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-10-12 17:12:55,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:55,033 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 17:12:55,035 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 17:12:55,036 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 17:12:55,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:55,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:55,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:55,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:55,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:12:55,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:12:55,053 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:55,060 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2023-10-12 17:12:55,060 INFO L444 ModelExtractionUtils]: 3 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2023-10-12 17:12:55,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:55,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:55,061 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 17:12:55,062 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 17:12:55,067 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:55,074 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:12:55,074 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:55,074 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, n) = -1*i2 + 2*n Supporting invariants [] [2023-10-12 17:12:55,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-10-12 17:12:55,078 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:55,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:55,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:55,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:55,115 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:55,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:55,116 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 17:12:55,116 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 17:12:55,117 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 22 transitions. cyclomatic complexity: 17 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:55,136 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 22 transitions. cyclomatic complexity: 17. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 40 transitions. Complement of second has 4 states. [2023-10-12 17:12:55,136 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 17:12:55,137 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 17:12:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2023-10-12 17:12:55,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:55,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:55,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:55,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:55,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:12:55,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:55,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 40 transitions. [2023-10-12 17:12:55,145 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:55,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2023-10-12 17:12:55,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:12:55,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:12:55,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:12:55,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:12:55,145 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:55,145 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:55,145 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:55,146 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:12:55,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:12:55,146 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:55,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:12:55,154 INFO L201 PluginConnector]: Adding new model unroll-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:12:55 BoogieIcfgContainer [2023-10-12 17:12:55,155 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:12:55,155 INFO L158 Benchmark]: Toolchain (without parser) took 2407.98ms. Allocated memory was 180.4MB in the beginning and 348.1MB in the end (delta: 167.8MB). Free memory was 131.6MB in the beginning and 242.0MB in the end (delta: -110.4MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-10-12 17:12:55,155 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.26ms. Allocated memory is still 180.4MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:55,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.26ms. Allocated memory is still 180.4MB. Free memory was 131.6MB in the beginning and 130.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:12:55,158 INFO L158 Benchmark]: Boogie Preprocessor took 14.48ms. Allocated memory is still 180.4MB. Free memory was 130.1MB in the beginning and 129.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:55,159 INFO L158 Benchmark]: RCFGBuilder took 298.36ms. Allocated memory is still 180.4MB. Free memory was 128.9MB in the beginning and 117.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:12:55,161 INFO L158 Benchmark]: BuchiAutomizer took 2075.31ms. Allocated memory was 180.4MB in the beginning and 348.1MB in the end (delta: 167.8MB). Free memory was 117.8MB in the beginning and 242.0MB in the end (delta: -124.2MB). Peak memory consumption was 44.1MB. Max. memory is 8.0GB. [2023-10-12 17:12:55,163 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 0.26ms. Allocated memory is still 180.4MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.26ms. Allocated memory is still 180.4MB. Free memory was 131.6MB in the beginning and 130.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.48ms. Allocated memory is still 180.4MB. Free memory was 130.1MB in the beginning and 129.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 298.36ms. Allocated memory is still 180.4MB. Free memory was 128.9MB in the beginning and 117.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 2075.31ms. Allocated memory was 180.4MB in the beginning and 348.1MB in the end (delta: 167.8MB). Free memory was 117.8MB in the beginning and 242.0MB in the end (delta: -124.2MB). Peak memory consumption was 44.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * n + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function 2 * n + -1 * i2 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 2 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital36 mio100 ax100 hnf100 lsp39 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp100 dnf100 smp100 tf100 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - 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: 0.0s, 18 PlacesBefore, 16 PlacesAfterwards, 13 TransitionsBefore, 11 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, independent: 18, independent conditional: 0, independent unconditional: 18, 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: 6, independent: 6, independent conditional: 0, independent unconditional: 6, 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: 6, independent: 6, independent conditional: 0, independent unconditional: 6, 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: 18, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:12:55,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-10-12 17:12:55,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:55,587 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...