/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_PETRI_NET -i ../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:18:21,345 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:18:21,406 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 17:18:21,429 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:18:21,429 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:18:21,430 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:18:21,431 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:18:21,431 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:18:21,431 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:18:21,434 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:18:21,434 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:18:21,435 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:18:21,435 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:18:21,436 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:18:21,436 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:18:21,437 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:18:21,437 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:18:21,437 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:18:21,437 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:18:21,437 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:18:21,437 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:18:21,438 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:18:21,438 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:18:21,439 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:18:21,439 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:18:21,439 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:18:21,439 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:18:21,439 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:18:21,439 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:18:21,439 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:18:21,440 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:18:21,440 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:18:21,440 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:18:21,442 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:18:21,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:18:21,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:18:21,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:18:21,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:18:21,659 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:18:21,659 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:18:21,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl [2023-10-12 17:18:21,661 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl' [2023-10-12 17:18:21,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:18:21,677 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:18:21,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:18:21,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:18:21,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:18:21,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,698 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:18:21,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:18:21,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:18:21,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:18:21,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:18:21,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:18:21,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:18:21,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:18:21,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:18:21,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/1) ... [2023-10-12 17:18:21,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:21,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:21,734 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 17:18:21,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:18:21,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:18:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:18:21,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:18:21,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:18:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:18:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:18:21,778 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:18:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:18:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:18:21,779 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 17:18:21,814 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:18:21,816 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:18:21,913 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:18:21,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:18:21,924 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:18:21,926 INFO L201 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:18:21 BoogieIcfgContainer [2023-10-12 17:18:21,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:18:21,934 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:18:21,934 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:18:21,939 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:18:21,939 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:18:21,940 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:18:21" (1/2) ... [2023-10-12 17:18:21,944 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d8f81f and model type incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:18:21, skipping insertion in model container [2023-10-12 17:18:21,944 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:18:21,945 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:18:21" (2/2) ... [2023-10-12 17:18:21,955 INFO L332 chiAutomizerObserver]: Analyzing ICFG incr-decr-zero.bpl [2023-10-12 17:18:22,028 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:18:22,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 64 flow [2023-10-12 17:18:22,068 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-10-12 17:18:22,068 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:18:22,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2023-10-12 17:18:22,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 64 flow [2023-10-12 17:18:22,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2023-10-12 17:18:22,075 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:18:22,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 20 transitions, 52 flow [2023-10-12 17:18:22,086 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 20 transitions, 52 flow [2023-10-12 17:18:22,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 52 flow [2023-10-12 17:18:22,090 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-10-12 17:18:22,090 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:18:22,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2023-10-12 17:18:22,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 96 [2023-10-12 17:18:22,212 INFO L134 LiptonReduction]: Checked pairs total: 63 [2023-10-12 17:18:22,212 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:18:22,220 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:18:22,221 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:18:22,221 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:18:22,221 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:18:22,221 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:18:22,221 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:18:22,221 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:18:22,221 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:18:22,221 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 places, 13 transitions, 38 flow [2023-10-12 17:18:22,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:18:22,224 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-10-12 17:18:22,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:18:22,224 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:18:22,226 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:18:22,226 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 places, 13 transitions, 38 flow [2023-10-12 17:18:22,227 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:18:22,227 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-10-12 17:18:22,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:18:22,227 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:18:22,230 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]true [41] $Ultimate##0-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 33#[L16]true [62] L16-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_12} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_i] 35#[L16-1, $Ultimate##0]true [48] $Ultimate##0-->L30-1: Formula: (= v_thread1Thread1of1ForFork0_i_1 0) InVars {} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i] 37#[L16-1, L30-1]true [2023-10-12 17:18:22,230 INFO L750 eck$LassoCheckResult]: Loop: 37#[L16-1, L30-1]true [74] L30-1-->L30-1: Formula: (and (= v_x_34 (+ v_x_35 1)) (= v_thread1Thread1of1ForFork0_i_19 (+ v_thread1Thread1of1ForFork0_i_20 1)) (< v_thread1Thread1of1ForFork0_i_20 v_N_15)) InVars {N=v_N_15, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_20, x=v_x_35} OutVars{N=v_N_15, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_19, x=v_x_34} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i, x] 37#[L16-1, L30-1]true [2023-10-12 17:18:22,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash 71162, now seen corresponding path program 1 times [2023-10-12 17:18:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:18:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240959534] [2023-10-12 17:18:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:18:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:18:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:22,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:18:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:22,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:18:22,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash 105, now seen corresponding path program 1 times [2023-10-12 17:18:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:18:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258085047] [2023-10-12 17:18:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:18:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:18:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:22,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:18:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:22,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:18:22,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2206096, now seen corresponding path program 1 times [2023-10-12 17:18:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:18:22,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618244882] [2023-10-12 17:18:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:18:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:18:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:22,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:18:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:22,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:18:22,386 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:18:22,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:18:22,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:18:22,387 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:18:22,387 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:18:22,387 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:22,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:18:22,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:18:22,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration1_Loop [2023-10-12 17:18:22,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:18:22,388 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:18:22,398 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 17:18:22,414 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 17:18:22,446 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:18:22,447 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:18:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:22,474 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 17:18:22,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:18:22,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:18:22,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:18:22,543 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 17:18:22,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:22,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:22,557 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 17:18:22,560 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 17:18:22,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:18:22,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:18:22,671 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:18:22,674 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 17:18:22,674 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:18:22,675 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:18:22,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:18:22,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:18:22,675 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:18:22,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:22,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:18:22,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:18:22,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration1_Loop [2023-10-12 17:18:22,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:18:22,675 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:18:22,676 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 17:18:22,686 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 17:18:22,718 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:18:22,721 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:18:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:22,739 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 17:18:22,745 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 17:18:22,745 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 17:18:22,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:18:22,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:18:22,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:18:22,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:18:22,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:18:22,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:18:22,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:18:22,775 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:18:22,783 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:18:22,783 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:18:22,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:22,787 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 17:18:22,788 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 17:18:22,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:18:22,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:18:22,842 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:18:22,842 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread1Thread1of1ForFork0_i, N) = -1*thread1Thread1of1ForFork0_i + 1*N Supporting invariants [] [2023-10-12 17:18:22,845 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 17:18:22,848 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:18:22,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:18:22,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:18:22,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:18:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:18:22,886 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:18:22,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:18:22,886 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 17:18:22,906 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 17:18:22,907 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. 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 17:18:22,965 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. 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 5 states and 180 transitions. [2023-10-12 17:18:22,966 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:18:22,968 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:18:22,969 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 17:18:22,972 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 17:18:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2023-10-12 17:18:22,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:18:22,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:18:22,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:18:22,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:18:22,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:18:22,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:18:22,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 144 transitions, 708 flow [2023-10-12 17:18:22,987 INFO L124 PetriNetUnfolderBase]: 55/106 cut-off events. [2023-10-12 17:18:22,988 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-10-12 17:18:22,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 106 events. 55/106 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 294 event pairs, 1 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 164. Up to 33 conditions per place. [2023-10-12 17:18:22,989 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 28 places, 144 transitions, 708 flow [2023-10-12 17:18:22,991 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 28 places, 144 transitions, 708 flow [2023-10-12 17:18:22,991 INFO L430 stractBuchiCegarLoop]: Abstraction has has 28 places, 144 transitions, 708 flow [2023-10-12 17:18:22,991 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:18:22,991 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 144 transitions, 708 flow [2023-10-12 17:18:22,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:18:22,997 INFO L124 PetriNetUnfolderBase]: 21/39 cut-off events. [2023-10-12 17:18:22,997 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-10-12 17:18:22,997 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:18:22,997 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]true [41] $Ultimate##0-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 33#[L16]true [62] L16-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_12} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_i] 35#[L16-1, $Ultimate##0]true [65] L16-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_12, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j, thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 86#[L17, $Ultimate##0, $Ultimate##0]true [54] $Ultimate##0-->L42-1: Formula: (= v_thread2Thread1of1ForFork1_j_1 0) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_1} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j] 88#[L17, $Ultimate##0, L42-1]true [2023-10-12 17:18:22,998 INFO L750 eck$LassoCheckResult]: Loop: 88#[L17, $Ultimate##0, L42-1]true [73] L42-1-->L42-1: Formula: (and (< v_thread2Thread1of1ForFork1_j_20 v_N_11) (= (+ v_x_24 1) v_x_25) (= v_thread2Thread1of1ForFork1_j_19 (+ v_thread2Thread1of1ForFork1_j_20 1))) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_20, N=v_N_11, x=v_x_25} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_19, N=v_N_11, x=v_x_24} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j, x] 88#[L17, $Ultimate##0, L42-1]true [73] L42-1-->L42-1: Formula: (and (< v_thread2Thread1of1ForFork1_j_20 v_N_11) (= (+ v_x_24 1) v_x_25) (= v_thread2Thread1of1ForFork1_j_19 (+ v_thread2Thread1of1ForFork1_j_20 1))) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_20, N=v_N_11, x=v_x_25} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_19, N=v_N_11, x=v_x_24} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j, x] 88#[L17, $Ultimate##0, L42-1]true [2023-10-12 17:18:22,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2206603, now seen corresponding path program 1 times [2023-10-12 17:18:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:18:22,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306815073] [2023-10-12 17:18:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:18:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:18:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:23,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:18:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:23,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:18:23,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:23,004 INFO L85 PathProgramCache]: Analyzing trace with hash 3297, now seen corresponding path program 1 times [2023-10-12 17:18:23,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:18:23,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623635653] [2023-10-12 17:18:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:18:23,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:18:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:23,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:18:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:23,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:18:23,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2120547819, now seen corresponding path program 1 times [2023-10-12 17:18:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:18:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979990927] [2023-10-12 17:18:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:18:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:18:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:23,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:18:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:18:23,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:18:23,056 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:18:23,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:18:23,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:18:23,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:18:23,056 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:18:23,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:23,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:18:23,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:18:23,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration2_Loop [2023-10-12 17:18:23,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:18:23,057 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:18:23,057 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 17:18:23,062 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 17:18:23,080 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:18:23,080 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:18:23,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:23,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:23,094 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 17:18:23,095 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 17:18:23,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:18:23,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:18:23,126 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 17:18:23,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:23,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:23,128 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 17:18:23,130 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 17:18:23,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:18:23,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:18:23,216 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:18:23,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:18:23,229 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:18:23,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:18:23,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:18:23,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:18:23,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:18:23,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:23,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:18:23,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:18:23,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration2_Loop [2023-10-12 17:18:23,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:18:23,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:18:23,230 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 17:18:23,236 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 17:18:23,255 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:18:23,256 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:18:23,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:23,269 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 17:18:23,297 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 17:18:23,297 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 17:18:23,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:18:23,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:18:23,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:18:23,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:18:23,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:18:23,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:18:23,305 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:18:23,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:18:23,329 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:18:23,329 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:18:23,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:18:23,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:18:23,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:18:23,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:18:23,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:18:23,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:18:23,335 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:18:23,335 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N, thread2Thread1of1ForFork1_j) = 1*N - 1*thread2Thread1of1ForFork1_j Supporting invariants [] [2023-10-12 17:18:23,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:18:23,338 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:18:23,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:18:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:18:23,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:18:23,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:18:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:18:23,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:18:23,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:18:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:18:23,382 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-10-12 17:18:23,382 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 17:18:23,472 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 states and 238 transitions. [2023-10-12 17:18:23,472 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:18:23,494 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:18:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:18:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 17:18:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-10-12 17:18:23,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:18:23,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:18:23,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 6 letters. Loop has 2 letters. [2023-10-12 17:18:23,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:18:23,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 4 letters. Loop has 4 letters. [2023-10-12 17:18:23,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:18:23,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 2088 transitions, 14424 flow [2023-10-12 17:18:23,536 INFO L124 PetriNetUnfolderBase]: 142/261 cut-off events. [2023-10-12 17:18:23,537 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-10-12 17:18:23,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 261 events. 142/261 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1006 event pairs, 2 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 631. Up to 92 conditions per place. [2023-10-12 17:18:23,537 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 42 places, 2088 transitions, 14424 flow [2023-10-12 17:18:23,556 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 42 places, 2088 transitions, 14424 flow [2023-10-12 17:18:23,557 INFO L430 stractBuchiCegarLoop]: Abstraction has has 42 places, 2088 transitions, 14424 flow [2023-10-12 17:18:23,557 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:18:23,557 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 42 places, 2088 transitions, 14424 flow [2023-10-12 17:18:23,586 INFO L124 PetriNetUnfolderBase]: 142/261 cut-off events. [2023-10-12 17:18:23,586 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-10-12 17:18:23,587 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:18:23,591 INFO L201 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:18:23 BoogieIcfgContainer [2023-10-12 17:18:23,591 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:18:23,592 INFO L158 Benchmark]: Toolchain (without parser) took 1914.62ms. Allocated memory was 174.1MB in the beginning and 230.7MB in the end (delta: 56.6MB). Free memory was 122.3MB in the beginning and 109.1MB in the end (delta: 13.2MB). Peak memory consumption was 69.6MB. Max. memory is 8.0GB. [2023-10-12 17:18:23,592 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.23ms. Allocated memory is still 174.1MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:18:23,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.89ms. Allocated memory is still 174.1MB. Free memory was 122.3MB in the beginning and 120.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:18:23,592 INFO L158 Benchmark]: Boogie Preprocessor took 12.54ms. Allocated memory is still 174.1MB. Free memory was 120.7MB in the beginning and 119.7MB in the end (delta: 984.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:18:23,593 INFO L158 Benchmark]: RCFGBuilder took 211.91ms. Allocated memory is still 174.1MB. Free memory was 119.5MB in the beginning and 110.8MB in the end (delta: 8.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:18:23,593 INFO L158 Benchmark]: BuchiAutomizer took 1657.20ms. Allocated memory was 174.1MB in the beginning and 230.7MB in the end (delta: 56.6MB). Free memory was 110.7MB in the beginning and 109.1MB in the end (delta: 1.6MB). Peak memory consumption was 58.1MB. Max. memory is 8.0GB. [2023-10-12 17:18:23,594 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 0.23ms. Allocated memory is still 174.1MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.89ms. Allocated memory is still 174.1MB. Free memory was 122.3MB in the beginning and 120.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.54ms. Allocated memory is still 174.1MB. Free memory was 120.7MB in the beginning and 119.7MB in the end (delta: 984.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 211.91ms. Allocated memory is still 174.1MB. Free memory was 119.5MB in the beginning and 110.8MB in the end (delta: 8.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1657.20ms. Allocated memory was 174.1MB in the beginning and 230.7MB in the end (delta: 56.6MB). Free memory was 110.7MB in the beginning and 109.1MB in the end (delta: 1.6MB). Peak memory consumption was 58.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + N and consists of 3 locations. One deterministic module has affine ranking function N + -1 * j and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. 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: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 139 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 85 mSDtfsCounter, 139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp68 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 119ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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, 25 PlacesBefore, 18 PlacesAfterwards, 20 TransitionsBefore, 13 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 63 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 63, independent: 63, independent conditional: 0, independent unconditional: 63, 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: 50, independent: 50, independent conditional: 0, independent unconditional: 50, 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: 50, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 63, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 50, unknown conditional: 0, unknown unconditional: 50] , 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 17:18:23,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:18:23,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-10-12 17:18:24,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...