/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/name-comparator-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:13:13,973 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:13:14,023 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 17:13:14,039 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:13:14,040 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:13:14,040 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:13:14,041 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:13:14,041 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:13:14,041 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:13:14,041 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:13:14,042 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:13:14,042 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:13:14,042 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:13:14,042 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:13:14,043 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:13:14,043 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:13:14,043 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:13:14,043 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:13:14,043 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:13:14,044 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:13:14,044 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:13:14,044 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:13:14,045 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:13:14,045 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:13:14,045 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:13:14,045 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:13:14,046 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:13:14,046 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:13:14,046 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:13:14,046 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:13:14,047 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:13:14,047 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:13:14,047 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:13:14,048 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:13:14,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:13:14,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:13:14,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:13:14,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:13:14,245 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:13:14,245 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:13:14,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/name-comparator-symm.wvr.bpl [2023-10-12 17:13:14,247 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/name-comparator-symm.wvr.bpl' [2023-10-12 17:13:14,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:13:14,275 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:13:14,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:14,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:13:14,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:13:14,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,293 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:13:14,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:14,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:13:14,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:13:14,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:13:14,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:13:14,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:13:14,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:13:14,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:13:14,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/1) ... [2023-10-12 17:13:14,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:14,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:14,362 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 17:13:14,394 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 17:13:14,406 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:13:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:13:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:13:14,407 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:13:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:13:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:13:14,407 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:13:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:13:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:13:14,408 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 17:13:14,445 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:13:14,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:13:14,585 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:13:14,642 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:13:14,642 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-10-12 17:13:14,644 INFO L201 PluginConnector]: Adding new model name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:14 BoogieIcfgContainer [2023-10-12 17:13:14,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:13:14,644 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:13:14,645 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:13:14,647 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:13:14,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:14,648 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:14" (1/2) ... [2023-10-12 17:13:14,649 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77a4e050 and model type name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:13:14, skipping insertion in model container [2023-10-12 17:13:14,649 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:14,649 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:14" (2/2) ... [2023-10-12 17:13:14,650 INFO L332 chiAutomizerObserver]: Analyzing ICFG name-comparator-symm.wvr.bpl [2023-10-12 17:13:14,728 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:13:14,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 20 transitions, 56 flow [2023-10-12 17:13:14,761 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-10-12 17:13:14,772 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:13:14,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:13:14,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 20 transitions, 56 flow [2023-10-12 17:13:14,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2023-10-12 17:13:14,780 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:13:14,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 16 transitions, 44 flow [2023-10-12 17:13:14,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 16 transitions, 44 flow [2023-10-12 17:13:14,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 16 transitions, 44 flow [2023-10-12 17:13:14,795 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-10-12 17:13:14,795 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:13:14,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:13:14,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:13:14,865 INFO L134 LiptonReduction]: Checked pairs total: 31 [2023-10-12 17:13:14,865 INFO L136 LiptonReduction]: Total number of compositions: 5 [2023-10-12 17:13:14,878 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:13:14,878 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:13:14,878 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:13:14,879 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:13:14,879 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:13:14,879 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:13:14,879 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:13:14,879 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:13:14,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:13:14,899 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:13:14,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:14,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:14,902 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:14,903 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:14,903 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:13:14,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 18 states, but on-demand construction may add more states [2023-10-12 17:13:14,905 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:13:14,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:14,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:14,905 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:14,905 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:14,908 INFO L748 eck$LassoCheckResult]: Stem: 26#[$Ultimate##0]don't care [90] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 29#[L76, $Ultimate##0]don't care [80] $Ultimate##0-->L31: Formula: (let ((.cse1 (not v_break_6_48)) (.cse0 (= v_name_1_37 v_name_2_37))) (and (= v_result_3_40 (ite .cse0 0 v_result_3_41)) (= v_i_4_27 0) .cse1 (or (and (not .cse0) .cse1 (not v_break_6_40)) (and (or .cse0 v_break_6_48) v_break_6_40)))) InVars {name_2=v_name_2_37, result_3=v_result_3_41, name_1=v_name_1_37} OutVars{name_2=v_name_2_37, i_4=v_i_4_27, result_3=v_result_3_40, name_1=v_name_1_37, break_6=v_break_6_40} AuxVars[v_break_6_48] AssignedVars[i_4, break_6, result_3] 31#[L31, L76]don't care [2023-10-12 17:13:14,909 INFO L750 eck$LassoCheckResult]: Loop: 31#[L31, L76]don't care [82] L31-->L31: Formula: (let ((.cse1 (not v_break_6_50)) (.cse2 (= v_name_2_31 v_current_5_16))) (let ((.cse0 (and .cse1 .cse2)) (.cse3 (= v_name_1_31 v_current_5_16)) (.cse4 (not v_break_6_36))) (and (or (and (or .cse0 v_break_6_50) v_break_6_34) (and (not v_break_6_34) .cse1 (or (not .cse2) v_break_6_50))) (= v_result_3_36 (ite .cse0 (- 1) (ite .cse3 1 v_result_3_37))) (= (select v_nondet_0_11 v_i_4_24) v_current_5_16) (or (and .cse1 (not .cse3) .cse4) (and v_break_6_50 (or v_break_6_36 .cse3))) (< v_i_4_24 3) .cse4 (= (+ v_i_4_24 1) v_i_4_23)))) InVars {name_2=v_name_2_31, i_4=v_i_4_24, name_1=v_name_1_31, break_6=v_break_6_36, result_3=v_result_3_37, nondet_0=v_nondet_0_11} OutVars{name_2=v_name_2_31, i_4=v_i_4_23, current_5=v_current_5_16, name_1=v_name_1_31, break_6=v_break_6_34, result_3=v_result_3_36, nondet_0=v_nondet_0_11} AuxVars[v_break_6_50] AssignedVars[i_4, current_5, break_6, result_3] 31#[L31, L76]don't care [2023-10-12 17:13:14,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 3831, now seen corresponding path program 1 times [2023-10-12 17:13:14,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:14,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482691914] [2023-10-12 17:13:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:15,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:15,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:15,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 113, now seen corresponding path program 1 times [2023-10-12 17:13:15,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150786930] [2023-10-12 17:13:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:15,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:15,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:15,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash 118843, now seen corresponding path program 1 times [2023-10-12 17:13:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:15,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141467059] [2023-10-12 17:13:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:15,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:15,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:15,420 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:15,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:15,420 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:15,420 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:15,420 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:15,421 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:15,421 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:15,421 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:15,421 INFO L133 ssoRankerPreferences]: Filename of dumped script: name-comparator-symm.wvr.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:13:15,421 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:15,421 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:15,439 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 17:13:15,600 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 17:13:15,683 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-10-12 17:13:16,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:16,034 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:16,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:16,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:16,074 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 17:13:16,125 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 17:13:16,128 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 17:13:16,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:16,136 INFO L203 nArgumentSynthesizer]: 3 stem disjuncts [2023-10-12 17:13:16,136 INFO L204 nArgumentSynthesizer]: 7 loop disjuncts [2023-10-12 17:13:16,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:16,334 INFO L401 nArgumentSynthesizer]: We have 154 Motzkin's Theorem applications. [2023-10-12 17:13:16,335 INFO L402 nArgumentSynthesizer]: A total of 14 supporting invariants were added. [2023-10-12 17:13:16,628 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:16,637 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 17:13:16,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:16,653 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 17:13:16,655 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 17:13:16,657 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 17:13:16,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:16,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:16,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:16,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:16,667 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:16,667 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:16,685 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:16,692 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2023-10-12 17:13:16,692 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-10-12 17:13:16,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:16,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:16,696 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 17:13:16,697 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 17:13:16,699 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:16,726 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:13:16,726 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:16,727 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_4) = -2*i_4 + 5 Supporting invariants [] [2023-10-12 17:13:16,745 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 17:13:16,746 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:16,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:16,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:16,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:16,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:16,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:16,793 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 17:13:16,812 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 17:13:16,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 18 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 17:13:16,858 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 18 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 43 states and 99 transitions. Complement of second has 5 states. [2023-10-12 17:13:16,860 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 17:13:16,863 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 17:13:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-10-12 17:13:16,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:13:16,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:16,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:13:16,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:16,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:13:16,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:16,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 99 transitions. [2023-10-12 17:13:16,872 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2023-10-12 17:13:16,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 22 states and 52 transitions. [2023-10-12 17:13:16,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-10-12 17:13:16,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-10-12 17:13:16,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 52 transitions. [2023-10-12 17:13:16,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:13:16,878 INFO L219 hiAutomatonCegarLoop]: Abstraction has 22 states and 52 transitions. [2023-10-12 17:13:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 52 transitions. [2023-10-12 17:13:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2023-10-12 17:13:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 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 17:13:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 46 transitions. [2023-10-12 17:13:16,896 INFO L241 hiAutomatonCegarLoop]: Abstraction has 19 states and 46 transitions. [2023-10-12 17:13:16,897 INFO L430 stractBuchiCegarLoop]: Abstraction has 19 states and 46 transitions. [2023-10-12 17:13:16,899 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:13:16,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 46 transitions. [2023-10-12 17:13:16,902 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2023-10-12 17:13:16,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:16,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:16,906 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:13:16,906 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:13:16,906 INFO L748 eck$LassoCheckResult]: Stem: 162#[$Ultimate##0]don't care [90] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 156#[L76, $Ultimate##0]don't care [93] L76-->$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] 160#[$Ultimate##0, L77, $Ultimate##0]don't care [84] $Ultimate##0-->L57: Formula: (let ((.cse0 (= v_name_1_39 v_name_2_39)) (.cse1 (not v_break_10_56))) (and (= v_i_8_19 0) (= v_result_7_40 (ite .cse0 0 v_result_7_41)) (or (and (or .cse0 v_break_10_56) v_break_10_48) (and (not .cse0) .cse1 (not v_break_10_48))) .cse1)) InVars {name_2=v_name_2_39, name_1=v_name_1_39, result_7=v_result_7_41} OutVars{break_10=v_break_10_48, name_2=v_name_2_39, name_1=v_name_1_39, i_8=v_i_8_19, result_7=v_result_7_40} AuxVars[v_break_10_56] AssignedVars[break_10, result_7, i_8] 166#[$Ultimate##0, L77, L57]don't care [2023-10-12 17:13:16,906 INFO L750 eck$LassoCheckResult]: Loop: 166#[$Ultimate##0, L77, L57]don't care [86] L57-->L57: Formula: (let ((.cse1 (not v_break_10_58)) (.cse4 (= v_name_1_35 v_current_9_16))) (let ((.cse0 (= v_name_2_35 v_current_9_16)) (.cse3 (and .cse1 .cse4)) (.cse2 (not v_break_10_43))) (and (< v_i_8_16 3) (= (+ v_i_8_16 1) v_i_8_15) (or (and (or v_break_10_43 .cse0) v_break_10_58) (and .cse1 .cse2 (not .cse0))) (= v_current_9_16 (select v_nondet_0_15 v_i_8_16)) (= v_result_7_36 (ite .cse3 (- 1) (ite .cse0 1 v_result_7_37))) (or (and (or v_break_10_58 .cse3) v_break_10_42) (and (or v_break_10_58 (not .cse4)) .cse1 (not v_break_10_42))) .cse2))) InVars {break_10=v_break_10_43, name_2=v_name_2_35, name_1=v_name_1_35, result_7=v_result_7_37, nondet_0=v_nondet_0_15, i_8=v_i_8_16} OutVars{break_10=v_break_10_42, name_2=v_name_2_35, name_1=v_name_1_35, result_7=v_result_7_36, current_9=v_current_9_16, nondet_0=v_nondet_0_15, i_8=v_i_8_15} AuxVars[v_break_10_58] AssignedVars[break_10, result_7, current_9, i_8] 166#[$Ultimate##0, L77, L57]don't care [2023-10-12 17:13:16,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash 119248, now seen corresponding path program 1 times [2023-10-12 17:13:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381831114] [2023-10-12 17:13:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:16,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:16,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:16,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 117, now seen corresponding path program 1 times [2023-10-12 17:13:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:16,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109877592] [2023-10-12 17:13:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:16,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:16,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:16,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash 3696774, now seen corresponding path program 1 times [2023-10-12 17:13:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027524122] [2023-10-12 17:13:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:16,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:16,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:16,967 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:17,188 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:17,189 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 17:13:17,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:17,192 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:17,192 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:17,192 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:17,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:17,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:17,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:17,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: name-comparator-symm.wvr.bpl_BEv2_Iteration2_Lasso [2023-10-12 17:13:17,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:17,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:17,195 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 17:13:17,197 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 17:13:17,199 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 17:13:17,294 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 17:13:17,386 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-10-12 17:13:17,657 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:17,657 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:17,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:17,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:17,666 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 17:13:17,668 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 17:13:17,669 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 17:13:17,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:17,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:17,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:17,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:17,679 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:17,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:17,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:17,712 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 17:13:17,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:17,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:17,714 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 17:13:17,715 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 17:13:17,717 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 17:13:17,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:17,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:17,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:17,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:17,725 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:17,725 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:17,744 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:17,749 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 17:13:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:17,751 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 17:13:17,753 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 17:13:17,754 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 17:13:17,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:17,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:17,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:17,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:17,762 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:13:17,763 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:13:17,777 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:17,784 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2023-10-12 17:13:17,784 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-10-12 17:13:17,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:17,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:17,785 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 17:13:17,787 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 17:13:17,788 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:17,809 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-10-12 17:13:17,809 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:17,810 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_8) = -2*i_8 + 5 Supporting invariants [] [2023-10-12 17:13:17,819 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 17:13:17,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:17,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:17,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:17,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:17,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:17,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:17,842 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 17:13:17,842 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 17:13:17,843 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 46 transitions. cyclomatic complexity: 34 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 17:13:17,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 46 transitions. cyclomatic complexity: 34. 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 35 states and 80 transitions. Complement of second has 4 states. [2023-10-12 17:13:17,880 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 17:13:17,880 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 17:13:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2023-10-12 17:13:17,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:13:17,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:17,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:13:17,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:17,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:13:17,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:17,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 80 transitions. [2023-10-12 17:13:17,887 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:13:17,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2023-10-12 17:13:17,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:13:17,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:13:17,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:13:17,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:13:17,889 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:17,889 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:17,889 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:13:17,889 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:13:17,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:13:17,889 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:13:17,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:13:17,896 INFO L201 PluginConnector]: Adding new model name-comparator-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:13:17 BoogieIcfgContainer [2023-10-12 17:13:17,896 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:13:17,899 INFO L158 Benchmark]: Toolchain (without parser) took 3621.66ms. Allocated memory was 162.5MB in the beginning and 305.1MB in the end (delta: 142.6MB). Free memory was 110.1MB in the beginning and 213.6MB in the end (delta: -103.5MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2023-10-12 17:13:17,899 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.21ms. Allocated memory is still 162.5MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:13:17,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.53ms. Allocated memory is still 162.5MB. Free memory was 109.9MB in the beginning and 108.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:13:17,901 INFO L158 Benchmark]: Boogie Preprocessor took 23.55ms. Allocated memory is still 162.5MB. Free memory was 108.4MB in the beginning and 107.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:13:17,901 INFO L158 Benchmark]: RCFGBuilder took 322.62ms. Allocated memory is still 162.5MB. Free memory was 107.2MB in the beginning and 92.8MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-10-12 17:13:17,903 INFO L158 Benchmark]: BuchiAutomizer took 3251.71ms. Allocated memory was 162.5MB in the beginning and 305.1MB in the end (delta: 142.6MB). Free memory was 92.7MB in the beginning and 213.6MB in the end (delta: -120.9MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2023-10-12 17:13:17,906 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 0.21ms. Allocated memory is still 162.5MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.53ms. Allocated memory is still 162.5MB. Free memory was 109.9MB in the beginning and 108.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.55ms. Allocated memory is still 162.5MB. Free memory was 108.4MB in the beginning and 107.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 322.62ms. Allocated memory is still 162.5MB. Free memory was 107.2MB in the beginning and 92.8MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 3251.71ms. Allocated memory was 162.5MB in the beginning and 305.1MB in the end (delta: 142.6MB). Free memory was 92.7MB in the beginning and 213.6MB in the end (delta: -120.9MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i_4 + 5 and consists of 4 locations. One deterministic module has affine ranking function 5 + -2 * i_8 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. 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, 3 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, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital96 mio100 ax100 hnf100 lsp207 ukn45 mio100 lsp87 div100 bol114 ite100 ukn100 eq174 hnf99 smp100 dnf616 smp23 tf100 neg100 sie121 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 593ms VariablesStem: 5 VariablesLoop: 8 DisjunctsStem: 3 DisjunctsLoop: 7 SupportingInvariants: 14 MotzkinApplications: 154 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 21 PlacesBefore, 17 PlacesAfterwards, 16 TransitionsBefore, 12 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 31 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, independent: 31, independent conditional: 0, independent unconditional: 31, 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: 19, independent: 19, independent conditional: 0, independent unconditional: 19, 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: 19, independent: 19, independent conditional: 0, independent unconditional: 19, 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: 31, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 19, unknown conditional: 0, unknown unconditional: 19] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, 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 17:13:17,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-10-12 17:13:18,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...