/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:22:24,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:22:24,527 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:22:24,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:22:24,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:22:24,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:22:24,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:22:24,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:22:24,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:22:24,552 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:22:24,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:22:24,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:22:24,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:22:24,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:22:24,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:22:24,582 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:22:24,582 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:22:24,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:22:24,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:22:24,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:22:24,809 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:22:24,809 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:22:24,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-symm.wvr.bpl [2025-04-26 16:22:24,810 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-symm.wvr.bpl' [2025-04-26 16:22:24,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:22:24,827 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:22:24,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:22:24,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:22:24,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:22:24,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,856 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:22:24,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:22:24,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:22:24,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:22:24,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:22:24,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,867 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:22:24,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:22:24,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:22:24,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:22:24,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/1) ... [2025-04-26 16:22:24,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:24,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:24,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:22:24,942 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:22:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:22:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:22:24,942 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:22:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:22:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:22:24,943 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:22:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:22:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:22:24,944 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:22:24,985 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:22:24,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:22:25,124 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:22:25,124 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:22:25,183 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:22:25,184 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-26 16:22:25,184 INFO L201 PluginConnector]: Adding new model nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:22:25 BoogieIcfgContainer [2025-04-26 16:22:25,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:22:25,186 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:22:25,186 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:22:25,190 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:22:25,192 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:22:25,192 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:22:24" (1/2) ... [2025-04-26 16:22:25,193 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c5faac1 and model type nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:22:25, skipping insertion in model container [2025-04-26 16:22:25,193 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:22:25,193 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:22:25" (2/2) ... [2025-04-26 16:22:25,194 INFO L376 chiAutomizerObserver]: Analyzing ICFG nzb-file-symm.wvr.bpl [2025-04-26 16:22:25,241 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:22:25,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 22 transitions, 58 flow [2025-04-26 16:22:25,288 INFO L116 PetriNetUnfolderBase]: 4/18 cut-off events. [2025-04-26 16:22:25,289 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:22:25,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 4/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2025-04-26 16:22:25,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 22 transitions, 58 flow [2025-04-26 16:22:25,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 18 transitions, 48 flow [2025-04-26 16:22:25,298 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 21 places, 18 transitions, 48 flow [2025-04-26 16:22:25,306 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:22:25,306 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:22:25,306 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:22:25,306 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:22:25,306 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:22:25,306 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:22:25,306 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:22:25,306 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:22:25,307 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:22:25,329 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 9 [2025-04-26 16:22:25,330 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:22:25,330 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:22:25,335 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:22:25,335 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-04-26 16:22:25,335 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:22:25,335 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 29 states, but on-demand construction may add more states [2025-04-26 16:22:25,337 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 9 [2025-04-26 16:22:25,338 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:22:25,338 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:22:25,338 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:22:25,338 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-04-26 16:22:25,342 INFO L752 eck$LassoCheckResult]: Stem: "[108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[96] $Ultimate##0-->L34: Formula: (and (not v_break_10_15) (not v_is_null_5_7) (= v_i_9_14 0) (not v_is_null_1_7)) InVars {is_null_1=v_is_null_1_7, is_null_5=v_is_null_5_7} OutVars{break_10=v_break_10_15, is_null_5=v_is_null_5_7, is_null_1=v_is_null_1_7, i_9=v_i_9_14} AuxVars[] AssignedVars[break_10, i_9]" [2025-04-26 16:22:25,342 INFO L754 eck$LassoCheckResult]: Loop: "[99] L34-->L34: Formula: (let ((.cse3 (not v_break_10_67)) (.cse7 (not v_break_10_68)) (.cse9 (select v_ends_with_6_21 v_i_9_43)) (.cse8 (select v_ends_with_2_17 v_i_9_43))) (let ((.cse0 (and .cse9 .cse8)) (.cse4 (not v_break_10_56)) (.cse5 (and .cse7 .cse9)) (.cse2 (not .cse9)) (.cse6 (and .cse3 .cse8)) (.cse1 (not .cse8))) (and (or (and (or v_break_10_56 .cse0) v_break_10_67) (and (or .cse1 .cse2) .cse3 .cse4)) (= v_i_9_42 (+ v_i_9_43 1)) (= v_result_8_41 (ite .cse5 (+ 1000 v_i_9_43) (ite .cse6 (+ v_i_9_43 (- 1000)) (ite .cse0 0 v_result_8_42)))) .cse4 (or (and (or v_break_10_68 .cse5) v_break_10_55) (and .cse7 (or .cse2 v_break_10_68) (not v_break_10_55))) (or (and v_break_10_68 (or .cse6 v_break_10_67)) (and .cse7 .cse3 (or .cse1 v_break_10_67))) (< v_i_9_43 5)))) InVars {result_8=v_result_8_42, break_10=v_break_10_56, ends_with_6=v_ends_with_6_21, i_9=v_i_9_43, ends_with_2=v_ends_with_2_17} OutVars{result_8=v_result_8_41, break_10=v_break_10_55, ends_with_6=v_ends_with_6_21, i_9=v_i_9_42, ends_with_2=v_ends_with_2_17} AuxVars[v_break_10_68, v_break_10_67] AssignedVars[result_8, break_10, i_9]" [2025-04-26 16:22:25,346 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash 4405, now seen corresponding path program 1 times [2025-04-26 16:22:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:22:25,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013808797] [2025-04-26 16:22:25,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:22:25,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:22:25,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:22:25,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:22:25,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:25,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:25,396 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:22:25,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:22:25,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:22:25,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:25,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:25,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:22:25,410 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash 130, now seen corresponding path program 1 times [2025-04-26 16:22:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:22:25,410 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336305522] [2025-04-26 16:22:25,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:22:25,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:22:25,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:22:25,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:22:25,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:25,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:25,425 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:22:25,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:22:25,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:22:25,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:25,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:25,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:22:25,432 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash 136654, now seen corresponding path program 1 times [2025-04-26 16:22:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:22:25,433 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741251256] [2025-04-26 16:22:25,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:22:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:22:25,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:22:25,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:22:25,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:25,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:25,440 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:22:25,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:22:25,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:22:25,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:25,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:25,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:22:25,937 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:22:25,938 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:22:25,938 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:22:25,938 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:22:25,938 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:22:25,938 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:25,938 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:22:25,939 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:22:25,939 INFO L132 ssoRankerPreferences]: Filename of dumped script: nzb-file-symm.wvr.bpl_petrified1_Iteration1_Lasso [2025-04-26 16:22:25,939 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:22:25,939 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:22:25,950 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:25,956 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:25,958 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:25,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:26,200 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2025-04-26 16:22:26,388 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:22:26,391 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:22:26,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:26,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:26,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:26,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:22:26,398 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 [2025-04-26 16:22:26,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:26,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:26,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:22:26,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:26,416 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:22:26,417 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:22:26,423 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:22:26,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:22:26,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:26,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:26,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:22:26,436 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 [2025-04-26 16:22:26,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:26,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:26,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:22:26,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:26,450 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:22:26,450 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:22:26,453 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:22:26,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:22:26,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:26,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:26,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:26,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:22:26,465 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 [2025-04-26 16:22:26,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:26,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:26,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:22:26,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:26,481 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:22:26,481 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:22:26,484 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:22:26,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:22:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:26,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:26,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:22:26,496 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 [2025-04-26 16:22:26,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:26,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:26,507 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2025-04-26 16:22:26,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:26,564 INFO L402 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2025-04-26 16:22:26,564 INFO L403 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2025-04-26 16:22:26,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:22:26,701 INFO L436 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2025-04-26 16:22:26,701 INFO L437 ModelExtractionUtils]: 45 out of 55 variables were initially zero. Simplification set additionally 7 variables to zero. [2025-04-26 16:22:26,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:26,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:26,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:26,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:22:26,742 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:22:26,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:22:26,773 INFO L439 nArgumentSynthesizer]: Removed 8 redundant supporting invariants from a total of 8. [2025-04-26 16:22:26,773 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:22:26,774 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_9) = -2*i_9 + 9 Supporting invariants [] [2025-04-26 16:22:26,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:22:26,785 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:22:26,800 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:26,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:22:26,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:22:26,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:22:26,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:22:26,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:22:26,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:22:26,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:22:26,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:22:26,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:22:26,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:22:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:22:26,848 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 [2025-04-26 16:22:26,852 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 29 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 1.5) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:22:26,914 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 29 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 85 states and 199 transitions. Complement of second has 5 states. [2025-04-26 16:22:26,915 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:22:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:22:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2025-04-26 16:22:26,923 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 2 letters. Loop has 1 letters. [2025-04-26 16:22:26,923 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:22:26,923 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 3 letters. Loop has 1 letters. [2025-04-26 16:22:26,924 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:22:26,924 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:22:26,924 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:22:26,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 199 transitions. [2025-04-26 16:22:26,928 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 8 [2025-04-26 16:22:26,934 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 33 states and 74 transitions. [2025-04-26 16:22:26,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2025-04-26 16:22:26,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2025-04-26 16:22:26,936 INFO L74 IsDeterministic]: Start isDeterministic. Operand 33 states and 74 transitions. [2025-04-26 16:22:26,936 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:22:26,936 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 74 transitions. [2025-04-26 16:22:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 74 transitions. [2025-04-26 16:22:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2025-04-26 16:22:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 2.5) internal successors, (in total 55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:22:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 55 transitions. [2025-04-26 16:22:26,954 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 55 transitions. [2025-04-26 16:22:26,954 INFO L438 stractBuchiCegarLoop]: Abstraction has 22 states and 55 transitions. [2025-04-26 16:22:26,954 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:22:26,954 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 55 transitions. [2025-04-26 16:22:26,955 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2025-04-26 16:22:26,955 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:22:26,955 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:22:26,955 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:22:26,955 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-04-26 16:22:26,955 INFO L752 eck$LassoCheckResult]: Stem: "[108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[111] L95-->$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]" "[101] $Ultimate##0-->L68: Formula: (and (= v_i_12_14 0) (not v_is_null_5_11) (not v_is_null_1_11) (not v_break_13_15)) InVars {is_null_1=v_is_null_1_11, is_null_5=v_is_null_5_11} OutVars{i_12=v_i_12_14, is_null_5=v_is_null_5_11, break_13=v_break_13_15, is_null_1=v_is_null_1_11} AuxVars[] AssignedVars[i_12, break_13]" [2025-04-26 16:22:26,956 INFO L754 eck$LassoCheckResult]: Loop: "[104] L68-->L68: Formula: (let ((.cse9 (select v_ends_with_6_31 v_i_12_43)) (.cse7 (not v_break_13_68)) (.cse8 (select v_ends_with_2_31 v_i_12_43)) (.cse1 (not v_break_13_67))) (let ((.cse2 (and .cse8 .cse1)) (.cse3 (and .cse9 .cse7)) (.cse4 (and .cse9 .cse8)) (.cse5 (not v_break_13_56)) (.cse6 (not .cse9)) (.cse0 (not .cse8))) (and (= (+ v_i_12_43 1) v_i_12_42) (or (and (or .cse0 v_break_13_67) .cse1 (not v_break_13_55)) (and v_break_13_55 (or v_break_13_67 .cse2))) (= (ite .cse2 (+ 1000 v_i_12_43) (ite .cse3 (+ v_i_12_43 (- 1000)) (ite .cse4 0 v_result_11_42))) v_result_11_41) .cse5 (or (and (or v_break_13_68 .cse3) v_break_13_67) (and .cse1 (or .cse6 v_break_13_68) .cse7)) (or (and v_break_13_68 (or .cse4 v_break_13_56)) (and .cse5 .cse7 (or .cse6 .cse0))) (< v_i_12_43 5)))) InVars {result_11=v_result_11_42, i_12=v_i_12_43, ends_with_6=v_ends_with_6_31, break_13=v_break_13_56, ends_with_2=v_ends_with_2_31} OutVars{result_11=v_result_11_41, i_12=v_i_12_42, ends_with_6=v_ends_with_6_31, break_13=v_break_13_55, ends_with_2=v_ends_with_2_31} AuxVars[v_break_13_68, v_break_13_67] AssignedVars[result_11, i_12, break_13]" [2025-04-26 16:22:26,956 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 137121, now seen corresponding path program 1 times [2025-04-26 16:22:26,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:22:26,956 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110368415] [2025-04-26 16:22:26,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:22:26,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:22:26,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:22:26,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:22:26,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:26,959 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:22:26,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:22:26,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:22:26,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:26,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:22:26,962 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 135, now seen corresponding path program 1 times [2025-04-26 16:22:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:22:26,962 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941813684] [2025-04-26 16:22:26,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:22:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:22:26,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:22:26,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:22:26,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:26,967 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:22:26,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:22:26,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:22:26,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:26,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:22:26,976 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash 4250855, now seen corresponding path program 1 times [2025-04-26 16:22:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:22:26,977 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225781289] [2025-04-26 16:22:26,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:22:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:22:26,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:22:26,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:22:26,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:26,987 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:22:26,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:22:26,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:22:26,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:26,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:22:27,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:22:27,352 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:22:27,352 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:22:27,352 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:22:27,352 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:22:27,352 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:22:27,352 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:27,352 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:22:27,352 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:22:27,352 INFO L132 ssoRankerPreferences]: Filename of dumped script: nzb-file-symm.wvr.bpl_petrified1_Iteration2_Lasso [2025-04-26 16:22:27,352 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:22:27,352 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:22:27,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:27,356 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:27,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:27,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:27,450 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:27,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:22:27,521 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2025-04-26 16:22:27,677 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:22:27,677 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:22:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:27,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:27,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:22:27,684 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 [2025-04-26 16:22:27,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:27,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:27,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:22:27,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:27,697 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:22:27,697 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:22:27,700 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:22:27,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:22:27,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:27,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:27,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:22:27,710 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 [2025-04-26 16:22:27,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:27,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:27,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:22:27,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:27,722 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:22:27,722 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:22:27,724 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:22:27,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:22:27,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:27,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:27,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:27,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:22:27,735 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 [2025-04-26 16:22:27,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:22:27,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:22:27,746 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2025-04-26 16:22:27,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:22:27,779 INFO L402 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2025-04-26 16:22:27,779 INFO L403 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2025-04-26 16:22:27,838 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:22:27,886 INFO L436 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2025-04-26 16:22:27,886 INFO L437 ModelExtractionUtils]: 43 out of 55 variables were initially zero. Simplification set additionally 9 variables to zero. [2025-04-26 16:22:27,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:22:27,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:22:27,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:22:27,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:22:27,890 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:22:27,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:22:27,908 INFO L439 nArgumentSynthesizer]: Removed 8 redundant supporting invariants from a total of 8. [2025-04-26 16:22:27,908 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:22:27,908 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_12) = -2*i_12 + 9 Supporting invariants [] [2025-04-26 16:22:27,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:22:27,917 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:22:27,927 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:22:27,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:22:27,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:22:27,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:27,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:22:27,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:22:27,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:22:27,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 16:22:27,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 16:22:27,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:22:27,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:22:27,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:22:27,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:22:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:22:27,944 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 [2025-04-26 16:22:27,945 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 55 transitions. cyclomatic complexity: 41 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (in total 4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:22:27,972 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 55 transitions. cyclomatic complexity: 41. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (in total 4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 42 states and 100 transitions. Complement of second has 4 states. [2025-04-26 16:22:27,973 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:22:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (in total 4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:22:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2025-04-26 16:22:27,974 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 3 letters. Loop has 1 letters. [2025-04-26 16:22:27,974 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:22:27,974 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 4 letters. Loop has 1 letters. [2025-04-26 16:22:27,974 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:22:27,974 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:22:27,974 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:22:27,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 100 transitions. [2025-04-26 16:22:27,976 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:22:27,977 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 0 states and 0 transitions. [2025-04-26 16:22:27,977 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:22:27,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:22:27,977 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:22:27,977 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:22:27,977 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:22:27,977 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:22:27,977 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:22:27,977 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:22:27,977 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:22:27,977 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:22:27,977 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:22:27,984 INFO L201 PluginConnector]: Adding new model nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:22:27 BoogieIcfgContainer [2025-04-26 16:22:27,984 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:22:27,985 INFO L158 Benchmark]: Toolchain (without parser) took 3157.78ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 86.1MB in the beginning and 50.1MB in the end (delta: 36.0MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2025-04-26 16:22:27,985 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:22:27,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.80ms. Allocated memory is still 159.4MB. Free memory was 86.0MB in the beginning and 84.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:22:27,985 INFO L158 Benchmark]: Boogie Preprocessor took 21.99ms. Allocated memory is still 159.4MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:22:27,986 INFO L158 Benchmark]: RCFGBuilder took 303.50ms. Allocated memory is still 159.4MB. Free memory was 83.1MB in the beginning and 67.9MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:22:27,986 INFO L158 Benchmark]: BuchiAutomizer took 2797.99ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 67.7MB in the beginning and 50.1MB in the end (delta: 17.7MB). Peak memory consumption was 5.8MB. Max. memory is 8.0GB. [2025-04-26 16:22:27,987 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 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.80ms. Allocated memory is still 159.4MB. Free memory was 86.0MB in the beginning and 84.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 21.99ms. Allocated memory is still 159.4MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 303.50ms. Allocated memory is still 159.4MB. Free memory was 83.1MB in the beginning and 67.9MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 2797.99ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 67.7MB in the beginning and 50.1MB in the end (delta: 17.7MB). Peak memory consumption was 5.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.4s. 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, 11 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, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital91 mio100 ax100 hnf100 lsp293 ukn26 mio100 lsp100 div100 bol136 ite100 ukn100 eq140 hnf98 smp100 dnf421 smp27 tf100 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 282ms VariablesStem: 2 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 48 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - 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_9 + 9 and consists of 4 locations. One deterministic module has affine ranking function 9 + -2 * i_12 and consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:22:27,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...