/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/chl/word-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:13:24,430 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:13:24,509 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:13:24,538 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:13:24,539 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:13:24,539 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:13:24,540 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:13:24,541 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:13:24,541 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:13:24,545 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:13:24,545 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:13:24,545 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:13:24,545 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:13:24,546 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:13:24,547 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:13:24,547 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:13:24,547 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:13:24,547 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:13:24,548 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:13:24,548 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:13:24,548 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:13:24,548 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:13:24,549 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:13:24,549 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:13:24,549 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:13:24,549 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:13:24,549 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:13:24,549 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:13:24,550 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:13:24,550 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:13:24,551 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:13:24,551 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:13:24,551 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:13:24,552 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:13:24,552 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:13:24,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:13:24,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:13:24,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:13:24,810 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:13:24,811 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:13:24,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl [2023-10-12 17:13:24,812 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-subst.wvr.bpl' [2023-10-12 17:13:24,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:13:24,849 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:13:24,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:24,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:13:24,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:13:24,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,882 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:13:24,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:24,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:13:24,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:13:24,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:13:24,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:13:24,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:13:24,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:13:24,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:13:24,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/1) ... [2023-10-12 17:13:24,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:25,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:25,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:13:25,040 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:13:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:13:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:13:25,044 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:13:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:13:25,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:13:25,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:13:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:13:25,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:13:25,046 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:13:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:13:25,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:13:25,047 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:13:25,093 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:13:25,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:13:25,223 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:13:25,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:13:25,272 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-10-12 17:13:25,274 INFO L201 PluginConnector]: Adding new model word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:25 BoogieIcfgContainer [2023-10-12 17:13:25,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:13:25,275 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:13:25,275 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:13:25,278 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:13:25,279 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:25,279 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:24" (1/2) ... [2023-10-12 17:13:25,280 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69942e5e and model type word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:13:25, skipping insertion in model container [2023-10-12 17:13:25,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:25,281 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:25" (2/2) ... [2023-10-12 17:13:25,282 INFO L332 chiAutomizerObserver]: Analyzing ICFG word-subst.wvr.bpl [2023-10-12 17:13:25,335 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:13:25,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 31 transitions, 86 flow [2023-10-12 17:13:25,379 INFO L124 PetriNetUnfolderBase]: 6/25 cut-off events. [2023-10-12 17:13:25,379 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:13:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 6/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-10-12 17:13:25,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 31 transitions, 86 flow [2023-10-12 17:13:25,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 25 transitions, 68 flow [2023-10-12 17:13:25,389 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:13:25,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 25 transitions, 68 flow [2023-10-12 17:13:25,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 25 transitions, 68 flow [2023-10-12 17:13:25,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 25 transitions, 68 flow [2023-10-12 17:13:25,411 INFO L124 PetriNetUnfolderBase]: 6/25 cut-off events. [2023-10-12 17:13:25,412 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:13:25,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 6/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-10-12 17:13:25,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 210 [2023-10-12 17:13:25,675 INFO L134 LiptonReduction]: Checked pairs total: 72 [2023-10-12 17:13:25,676 INFO L136 LiptonReduction]: Total number of compositions: 9 [2023-10-12 17:13:25,692 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:13:25,692 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:13:25,692 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:13:25,692 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:13:25,692 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:13:25,693 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:13:25,693 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:13:25,693 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:13:25,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:13:25,733 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 31 [2023-10-12 17:13:25,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:25,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:25,738 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:25,738 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:25,738 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:13:25,738 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 54 states, but on-demand construction may add more states [2023-10-12 17:13:25,744 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 31 [2023-10-12 17:13:25,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:25,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:25,744 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:25,744 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:25,749 INFO L748 eck$LassoCheckResult]: Stem: 35#[$Ultimate##0]don't care [133] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 38#[L121, $Ultimate##0]don't care [117] $Ultimate##0-->L38: Formula: (and (not v_break_10_13) (= v_count_1_11 v_count_4_15) (= v_i_9_16 0)) InVars {count_4=v_count_4_15, count_1=v_count_1_11} OutVars{break_10=v_break_10_13, count_1=v_count_1_11, count_4=v_count_4_15, i_9=v_i_9_16} AuxVars[] AssignedVars[break_10, i_9] 42#[L121, L38]don't care [2023-10-12 17:13:25,749 INFO L750 eck$LassoCheckResult]: Loop: 42#[L121, L38]don't care [120] L38-->L38: Formula: (let ((.cse0 (not v_break_10_18)) (.cse2 (select v_get_3_15 v_i_9_21)) (.cse3 (select v_get_0_15 v_i_9_21))) (and .cse0 (let ((.cse1 (= .cse2 .cse3))) (or (and (or (not .cse1) v_break_10_18) v_break_10_17) (and (not v_break_10_17) .cse0 .cse1))) (< v_i_9_21 v_len_2_17) (= (ite (< .cse3 .cse2) (- 1) (ite (< .cse2 .cse3) 1 v_result_11_18)) v_result_11_17) (= (+ v_i_9_21 1) v_i_9_20) (< v_i_9_21 v_len_5_15))) InVars {break_10=v_break_10_18, result_11=v_result_11_18, get_0=v_get_0_15, len_2=v_len_2_17, len_5=v_len_5_15, i_9=v_i_9_21, get_3=v_get_3_15} OutVars{break_10=v_break_10_17, result_11=v_result_11_17, get_0=v_get_0_15, len_2=v_len_2_17, len_5=v_len_5_15, i_9=v_i_9_20, get_3=v_get_3_15} AuxVars[] AssignedVars[break_10, result_11, i_9] 42#[L121, L38]don't care [2023-10-12 17:13:25,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 5201, now seen corresponding path program 1 times [2023-10-12 17:13:25,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:25,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874201800] [2023-10-12 17:13:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:25,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:25,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:25,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash 151, now seen corresponding path program 1 times [2023-10-12 17:13:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:25,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319069745] [2023-10-12 17:13:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:25,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:25,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:25,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:25,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 161351, now seen corresponding path program 1 times [2023-10-12 17:13:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850920104] [2023-10-12 17:13:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:25,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:25,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:26,240 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:26,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:26,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:26,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:26,241 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:26,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:26,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:26,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:26,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: word-subst.wvr.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:13:26,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:26,242 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:26,260 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:26,269 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:26,272 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:26,557 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:26,560 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:26,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:26,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:26,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:26,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:26,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:13:26,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:26,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:26,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:26,589 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:26,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:26,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:26,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:26,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:26,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:26,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:26,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-10-12 17:13:26,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:26,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:26,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:26,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:26,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:26,624 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:26,624 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:26,636 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:26,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:26,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:26,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:26,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:26,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-10-12 17:13:26,659 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:26,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:26,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:26,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:26,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:26,672 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:26,672 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:26,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:26,693 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:13:26,694 INFO L444 ModelExtractionUtils]: 9 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:13:26,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:26,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:26,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:26,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-10-12 17:13:26,725 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:26,753 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:13:26,753 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:26,754 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_9, len_5) = -1*i_9 + 1*len_5 Supporting invariants [] [2023-10-12 17:13:26,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:26,763 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:26,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:26,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:26,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:26,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:26,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:13:26,860 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:13:26,862 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 54 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:26,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 54 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 170 states and 666 transitions. Complement of second has 5 states. [2023-10-12 17:13:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:13:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2023-10-12 17:13:26,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:13:26,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:26,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:13:26,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:26,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:13:26,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:26,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 666 transitions. [2023-10-12 17:13:26,994 INFO L131 ngComponentsAnalysis]: Automaton has 36 accepting balls. 36 [2023-10-12 17:13:27,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 124 states and 478 transitions. [2023-10-12 17:13:27,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2023-10-12 17:13:27,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2023-10-12 17:13:27,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 478 transitions. [2023-10-12 17:13:27,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:13:27,007 INFO L219 hiAutomatonCegarLoop]: Abstraction has 124 states and 478 transitions. [2023-10-12 17:13:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states and 478 transitions. [2023-10-12 17:13:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2023-10-12 17:13:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 4.308641975308642) internal successors, (349), 80 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 349 transitions. [2023-10-12 17:13:27,036 INFO L241 hiAutomatonCegarLoop]: Abstraction has 81 states and 349 transitions. [2023-10-12 17:13:27,036 INFO L430 stractBuchiCegarLoop]: Abstraction has 81 states and 349 transitions. [2023-10-12 17:13:27,036 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:13:27,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states and 349 transitions. [2023-10-12 17:13:27,038 INFO L131 ngComponentsAnalysis]: Automaton has 24 accepting balls. 24 [2023-10-12 17:13:27,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:27,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:27,038 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:13:27,038 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:27,039 INFO L748 eck$LassoCheckResult]: Stem: 502#[$Ultimate##0]don't care [133] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 458#[L121, $Ultimate##0]don't care [136] L121-->$Ultimate##0: 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] 422#[L122, $Ultimate##0, $Ultimate##0]don't care [122] $Ultimate##0-->L68: Formula: (and (= v_count_1_15 v_count_7_13) (not v_break_13_21) (= v_i_12_22 0)) InVars {count_7=v_count_7_13, count_1=v_count_1_15} OutVars{i_12=v_i_12_22, count_7=v_count_7_13, count_1=v_count_1_15, break_13=v_break_13_21} AuxVars[] AssignedVars[i_12, break_13] 430#[L122, $Ultimate##0, L68]don't care [2023-10-12 17:13:27,039 INFO L750 eck$LassoCheckResult]: Loop: 430#[L122, $Ultimate##0, L68]don't care [125] L68-->L68: Formula: (let ((.cse0 (not v_break_13_18)) (.cse2 (select v_get_6_11 v_i_12_19)) (.cse1 (select v_get_0_11 v_i_12_19))) (and (= (+ v_i_12_19 1) v_i_12_18) .cse0 (< v_i_12_19 v_len_8_11) (< v_i_12_19 v_len_2_13) (= (ite (< .cse1 .cse2) (- 1) (ite (< .cse2 .cse1) 1 v_result_14_16)) v_result_14_15) (let ((.cse3 (= .cse2 .cse1))) (or (and (or (not .cse3) v_break_13_18) v_break_13_17) (and .cse3 .cse0 (not v_break_13_17)))))) InVars {get_0=v_get_0_11, result_14=v_result_14_16, len_2=v_len_2_13, i_12=v_i_12_19, break_13=v_break_13_18, get_6=v_get_6_11, len_8=v_len_8_11} OutVars{get_0=v_get_0_11, result_14=v_result_14_15, len_2=v_len_2_13, i_12=v_i_12_18, break_13=v_break_13_17, get_6=v_get_6_11, len_8=v_len_8_11} AuxVars[] AssignedVars[result_14, i_12, break_13] 430#[L122, $Ultimate##0, L68]don't care [2023-10-12 17:13:27,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 161942, now seen corresponding path program 1 times [2023-10-12 17:13:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:27,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479445482] [2023-10-12 17:13:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:27,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:27,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:27,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:27,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash 156, now seen corresponding path program 1 times [2023-10-12 17:13:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:27,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514277611] [2023-10-12 17:13:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:27,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:27,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:27,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:27,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash 5020327, now seen corresponding path program 1 times [2023-10-12 17:13:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:27,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106702530] [2023-10-12 17:13:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:27,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:27,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:27,277 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:27,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:27,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:27,277 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:27,277 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:27,277 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:27,277 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:27,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:27,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: word-subst.wvr.bpl_BEv2_Iteration2_Lasso [2023-10-12 17:13:27,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:27,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:27,280 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:27,283 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:27,285 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:27,368 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:27,371 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:27,558 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:27,558 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:27,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:27,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:27,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:27,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-10-12 17:13:27,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:27,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:27,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:27,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:27,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:27,625 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:27,625 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:27,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:27,633 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 17:13:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:27,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:27,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-10-12 17:13:27,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:27,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:27,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:27,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:27,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:27,664 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:27,665 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:27,685 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:27,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:27,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:27,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:13:27,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:27,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:27,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:27,706 INFO L204 nArgumentSynthesizer]: 3 loop disjuncts [2023-10-12 17:13:27,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:27,732 INFO L401 nArgumentSynthesizer]: We have 30 Motzkin's Theorem applications. [2023-10-12 17:13:27,732 INFO L402 nArgumentSynthesizer]: A total of 6 supporting invariants were added. [2023-10-12 17:13:27,765 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:27,773 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 17:13:27,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:27,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:27,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:27,807 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:27,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:27,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:27,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:27,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:27,818 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:27,818 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:27,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:13:27,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:27,839 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:13:27,839 INFO L444 ModelExtractionUtils]: 9 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:13:27,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:27,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:27,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:27,852 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:27,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-10-12 17:13:27,885 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:13:27,886 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:27,886 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(len_8, i_12) = 1*len_8 - 1*i_12 Supporting invariants [] [2023-10-12 17:13:27,892 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 17:13:27,893 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:27,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:27,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:27,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:27,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:27,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:13:27,922 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:13:27,922 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 349 transitions. cyclomatic complexity: 304 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:27,972 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 349 transitions. cyclomatic complexity: 304. 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 245 states and 1020 transitions. Complement of second has 4 states. [2023-10-12 17:13:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:13:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2023-10-12 17:13:27,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:13:27,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:27,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:13:27,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:27,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:13:27,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:27,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 245 states and 1020 transitions. [2023-10-12 17:13:27,980 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 18 [2023-10-12 17:13:27,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 245 states to 169 states and 656 transitions. [2023-10-12 17:13:27,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2023-10-12 17:13:27,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2023-10-12 17:13:27,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 656 transitions. [2023-10-12 17:13:27,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:13:27,984 INFO L219 hiAutomatonCegarLoop]: Abstraction has 169 states and 656 transitions. [2023-10-12 17:13:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 656 transitions. [2023-10-12 17:13:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 115. [2023-10-12 17:13:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 4.269565217391304) internal successors, (491), 114 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:13:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 491 transitions. [2023-10-12 17:13:27,994 INFO L241 hiAutomatonCegarLoop]: Abstraction has 115 states and 491 transitions. [2023-10-12 17:13:27,994 INFO L430 stractBuchiCegarLoop]: Abstraction has 115 states and 491 transitions. [2023-10-12 17:13:27,994 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:13:27,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 491 transitions. [2023-10-12 17:13:27,996 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 13 [2023-10-12 17:13:27,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:27,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:27,996 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:13:27,996 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:27,996 INFO L748 eck$LassoCheckResult]: Stem: 971#[$Ultimate##0]don't care [133] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 877#[L121, $Ultimate##0]don't care [136] L121-->$Ultimate##0: 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] 853#[L122, $Ultimate##0, $Ultimate##0]don't care [139] L122-->$Ultimate##0: 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] 863#[$Ultimate##0, $Ultimate##0, $Ultimate##0, L123]don't care [127] $Ultimate##0-->L98: Formula: (and (= v_count_7_15 v_count_4_17) (not v_break_16_21) (= v_i_15_22 0)) InVars {count_7=v_count_7_15, count_4=v_count_4_17} OutVars{count_7=v_count_7_15, i_15=v_i_15_22, count_4=v_count_4_17, break_16=v_break_16_21} AuxVars[] AssignedVars[i_15, break_16] 781#[$Ultimate##0, L123, $Ultimate##0, L98]don't care [2023-10-12 17:13:27,997 INFO L750 eck$LassoCheckResult]: Loop: 781#[$Ultimate##0, L123, $Ultimate##0, L98]don't care [129] L98-->L98: Formula: (let ((.cse0 (not v_break_16_16)) (.cse2 (select v_get_6_15 v_i_15_17)) (.cse1 (select v_get_3_13 v_i_15_17))) (and .cse0 (= v_i_15_16 (+ v_i_15_17 1)) (= v_result_17_17 (ite (< .cse1 .cse2) (- 1) (ite (< .cse2 .cse1) 1 v_result_17_18))) (let ((.cse3 (= .cse2 .cse1))) (or (and (or v_break_16_16 (not .cse3)) v_break_16_15) (and .cse0 (not v_break_16_15) .cse3))) (< v_i_15_17 v_len_8_13) (< v_i_15_17 v_len_5_11))) InVars {i_15=v_i_15_17, result_17=v_result_17_18, len_5=v_len_5_11, get_6=v_get_6_15, len_8=v_len_8_13, break_16=v_break_16_16, get_3=v_get_3_13} OutVars{i_15=v_i_15_16, result_17=v_result_17_17, len_5=v_len_5_11, get_6=v_get_6_15, len_8=v_len_8_13, break_16=v_break_16_15, get_3=v_get_3_13} AuxVars[] AssignedVars[i_15, result_17, break_16] 781#[$Ultimate##0, L123, $Ultimate##0, L98]don't care [2023-10-12 17:13:27,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash 5020856, now seen corresponding path program 1 times [2023-10-12 17:13:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422067338] [2023-10-12 17:13:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:28,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:28,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:28,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash 160, now seen corresponding path program 1 times [2023-10-12 17:13:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007314874] [2023-10-12 17:13:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:28,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:28,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:28,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:28,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 155646665, now seen corresponding path program 1 times [2023-10-12 17:13:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71949469] [2023-10-12 17:13:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:28,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:28,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:28,177 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:28,177 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:28,177 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:28,177 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:28,177 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:28,177 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:28,177 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:28,177 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:28,178 INFO L133 ssoRankerPreferences]: Filename of dumped script: word-subst.wvr.bpl_BEv2_Iteration3_Lasso [2023-10-12 17:13:28,178 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:28,178 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:28,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,243 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,246 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,249 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,252 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,258 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,261 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,263 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:13:28,448 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:28,449 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:28,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:28,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:28,450 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 17:13:28,457 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 17:13:28,502 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:13:28,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:28,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:28,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:28,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:28,513 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:28,513 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:28,526 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:28,531 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:13:28,531 INFO L444 ModelExtractionUtils]: 9 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:13:28,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:28,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:28,537 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 17:13:28,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:28,544 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 17:13:28,574 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:13:28,574 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:28,574 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(len_5, i_15) = 1*len_5 - 1*i_15 Supporting invariants [] [2023-10-12 17:13:28,578 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 17:13:28,579 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:28,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:28,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:28,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:28,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:28,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:13:28,610 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:13:28,610 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 491 transitions. cyclomatic complexity: 416 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 17:13:28,650 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 491 transitions. cyclomatic complexity: 416. 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 231 states and 942 transitions. Complement of second has 4 states. [2023-10-12 17:13:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:13:28,651 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 17:13:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2023-10-12 17:13:28,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 36 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:13:28,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:28,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 36 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:13:28,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:28,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 36 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:13:28,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:28,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 942 transitions. [2023-10-12 17:13:28,656 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:13:28,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 0 states and 0 transitions. [2023-10-12 17:13:28,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:13:28,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:13:28,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:13:28,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:13:28,657 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:28,657 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:28,657 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:28,657 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:13:28,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:13:28,657 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:13:28,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:13:28,662 INFO L201 PluginConnector]: Adding new model word-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:13:28 BoogieIcfgContainer [2023-10-12 17:13:28,663 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:13:28,663 INFO L158 Benchmark]: Toolchain (without parser) took 3814.33ms. Allocated memory was 197.1MB in the beginning and 242.2MB in the end (delta: 45.1MB). Free memory was 151.6MB in the beginning and 136.7MB in the end (delta: 15.0MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-10-12 17:13:28,664 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.24ms. Allocated memory is still 197.1MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:13:28,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.43ms. Allocated memory is still 197.1MB. Free memory was 151.5MB in the beginning and 149.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:13:28,665 INFO L158 Benchmark]: Boogie Preprocessor took 21.13ms. Allocated memory is still 197.1MB. Free memory was 149.9MB in the beginning and 148.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:13:28,665 INFO L158 Benchmark]: RCFGBuilder took 368.55ms. Allocated memory is still 197.1MB. Free memory was 148.7MB in the beginning and 159.6MB in the end (delta: -10.9MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. [2023-10-12 17:13:28,665 INFO L158 Benchmark]: BuchiAutomizer took 3387.48ms. Allocated memory was 197.1MB in the beginning and 242.2MB in the end (delta: 45.1MB). Free memory was 159.4MB in the beginning and 136.7MB in the end (delta: 22.7MB). Peak memory consumption was 67.3MB. Max. memory is 8.0GB. [2023-10-12 17:13:28,667 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 0.24ms. Allocated memory is still 197.1MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.43ms. Allocated memory is still 197.1MB. Free memory was 151.5MB in the beginning and 149.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.13ms. Allocated memory is still 197.1MB. Free memory was 149.9MB in the beginning and 148.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 368.55ms. Allocated memory is still 197.1MB. Free memory was 148.7MB in the beginning and 159.6MB in the end (delta: -10.9MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. * BuchiAutomizer took 3387.48ms. Allocated memory was 197.1MB in the beginning and 242.2MB in the end (delta: 45.1MB). Free memory was 159.4MB in the beginning and 136.7MB in the end (delta: 22.7MB). Peak memory consumption was 67.3MB. 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 -1 * i_9 + len_5 and consists of 4 locations. One deterministic module has affine ranking function -1 * i_12 + len_8 and consists of 3 locations. One deterministic module has affine ranking function -1 * i_15 + len_5 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.4s. 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, 97 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, 83 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital99 mio100 ax100 hnf100 lsp206 ukn28 mio100 lsp74 div100 bol111 ite100 ukn100 eq145 hnf100 smp100 dnf819 smp10 tf100 neg100 sie123 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 71ms VariablesStem: 1 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 3 SupportingInvariants: 6 MotzkinApplications: 30 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.3s - 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: 0.3s, 29 PlacesBefore, 24 PlacesAfterwards, 25 TransitionsBefore, 20 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 72, independent: 72, independent conditional: 0, independent unconditional: 72, 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: 72, independent: 72, independent conditional: 0, independent unconditional: 72, 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: 72, independent: 72, independent conditional: 0, independent unconditional: 72, 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: 72, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 72, unknown conditional: 0, unknown unconditional: 72] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:13:28,684 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 17:13:28,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:29,083 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...