/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/buchiAutomizer/concurrent-buchi-pn-semanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.omega-petrinet-638c691-m [2022-09-29 15:02:42,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 15:02:42,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 15:02:42,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 15:02:42,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 15:02:42,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 15:02:42,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 15:02:42,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 15:02:42,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 15:02:42,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 15:02:42,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 15:02:42,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 15:02:42,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 15:02:42,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 15:02:42,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 15:02:42,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 15:02:42,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 15:02:42,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 15:02:42,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 15:02:42,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 15:02:42,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 15:02:42,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 15:02:42,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 15:02:42,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 15:02:42,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-29 15:02:42,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 15:02:42,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 15:02:42,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 15:02:42,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-buchi-pn-semanticLbe.epf [2022-09-29 15:02:42,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 15:02:42,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 15:02:42,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 15:02:42,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 15:02:42,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 15:02:42,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 15:02:42,807 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 15:02:42,807 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-09-29 15:02:42,807 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-09-29 15:02:42,807 INFO L138 SettingsManager]: * Use old map elimination=false [2022-09-29 15:02:42,808 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-09-29 15:02:42,808 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-09-29 15:02:42,808 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * Automaton type for concurrent programs=BUCHI_PETRI_NET [2022-09-29 15:02:42,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-09-29 15:02:42,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-09-29 15:02:42,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-09-29 15:02:42,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 15:02:42,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 15:02:42,811 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-09-29 15:02:42,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 15:02:42,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-09-29 15:02:42,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 15:02:42,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 15:02:42,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 15:02:42,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 15:02:42,813 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-09-29 15:02:42,813 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 15:02:43,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 15:02:43,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 15:02:43,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 15:02:43,051 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 15:02:43,054 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 15:02:43,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl [2022-09-29 15:02:43,055 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl' [2022-09-29 15:02:43,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 15:02:43,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-29 15:02:43,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-29 15:02:43,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-29 15:02:43,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-29 15:02:43,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,095 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-29 15:02:43,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-29 15:02:43,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 15:02:43,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 15:02:43,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 15:02:43,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 15:02:43,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 15:02:43,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 15:02:43,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 15:02:43,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/1) ... [2022-09-29 15:02:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:43,154 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) [2022-09-29 15:02:43,166 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 [2022-09-29 15:02:43,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-09-29 15:02:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-29 15:02:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-29 15:02:43,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-09-29 15:02:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-29 15:02:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-29 15:02:43,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-29 15:02:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 15:02:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 15:02:43,190 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 15:02:43,228 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 15:02:43,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 15:02:43,303 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 15:02:43,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 15:02:43,309 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-29 15:02:43,311 INFO L202 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:02:43 BoogieIcfgContainer [2022-09-29 15:02:43,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 15:02:43,312 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-09-29 15:02:43,312 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-09-29 15:02:43,315 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-09-29 15:02:43,316 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:02:43,316 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:02:43" (1/2) ... [2022-09-29 15:02:43,322 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ff8edba and model type incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.09 03:02:43, skipping insertion in model container [2022-09-29 15:02:43,323 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:02:43,323 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:02:43" (2/2) ... [2022-09-29 15:02:43,324 INFO L322 chiAutomizerObserver]: Analyzing ICFG incr-decr-zero.bpl [2022-09-29 15:02:43,438 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-29 15:02:43,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 64 flow [2022-09-29 15:02:43,508 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:02:43,508 INFO L123 PetriNetUnfolderBase]: 2/20 cut-off events. [2022-09-29 15:02:43,508 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 15:02:43,511 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 27 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. [2022-09-29 15:02:43,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 64 flow [2022-09-29 15:02:43,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2022-09-29 15:02:43,522 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-09-29 15:02:43,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 20 transitions, 52 flow [2022-09-29 15:02:43,550 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 20 transitions, 52 flow [2022-09-29 15:02:43,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 52 flow [2022-09-29 15:02:43,558 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:02:43,558 INFO L123 PetriNetUnfolderBase]: 2/20 cut-off events. [2022-09-29 15:02:43,558 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 15:02:43,559 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 26 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. [2022-09-29 15:02:43,561 INFO L116 LiptonReduction]: Number of co-enabled transitions 96 [2022-09-29 15:02:43,753 INFO L131 LiptonReduction]: Checked pairs total: 63 [2022-09-29 15:02:43,754 INFO L133 LiptonReduction]: Total number of compositions: 7 [2022-09-29 15:02:43,766 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-09-29 15:02:43,767 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-09-29 15:02:43,767 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-09-29 15:02:43,767 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-09-29 15:02:43,767 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-09-29 15:02:43,767 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-09-29 15:02:43,767 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-09-29 15:02:43,767 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2022-09-29 15:02:43,768 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 18 places, 13 transitions, 38 flow [2022-09-29 15:02:43,773 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 18 places, 13 transitions, 38 flow [2022-09-29 15:02:43,775 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:43,776 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 15:02:43,776 INFO L123 PetriNetUnfolderBase]: 0/4 cut-off events. [2022-09-29 15:02:43,776 INFO L124 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2022-09-29 15:02:43,776 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 15:02:43,780 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-09-29 15:02:43,780 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 18 places, 13 transitions, 38 flow [2022-09-29 15:02:43,783 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 18 places, 13 transitions, 38 flow [2022-09-29 15:02:43,784 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:43,784 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 15:02:43,784 INFO L123 PetriNetUnfolderBase]: 0/4 cut-off events. [2022-09-29 15:02:43,784 INFO L124 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2022-09-29 15:02:43,784 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 15:02:43,789 INFO L733 eck$LassoCheckResult]: Stem: 31#[ULTIMATE.startENTRY]true [32] ULTIMATE.startENTRY-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 33#[L16]true [62] L16-->thread1ENTRY: 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, thread1ENTRY]true [48] thread1ENTRY-->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 [2022-09-29 15:02:43,789 INFO L735 eck$LassoCheckResult]: Loop: 37#[L16-1, L30-1]true [74] L30-1-->L30-1: Formula: (and (= v_thread1Thread1of1ForFork0_i_23 (+ v_thread1Thread1of1ForFork0_i_24 1)) (< v_thread1Thread1of1ForFork0_i_24 v_N_15) (= v_x_34 (+ v_x_35 1))) InVars {N=v_N_15, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_24, x=v_x_35} OutVars{N=v_N_15, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_23, x=v_x_34} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i, x] 37#[L16-1, L30-1]true [2022-09-29 15:02:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash 62513, now seen corresponding path program 1 times [2022-09-29 15:02:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:02:43,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378458049] [2022-09-29 15:02:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:02:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:02:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:43,879 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:02:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:43,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:02:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 105, now seen corresponding path program 1 times [2022-09-29 15:02:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:02:43,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583309077] [2022-09-29 15:02:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:02:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:02:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:43,924 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:02:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:43,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:02:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:43,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1937977, now seen corresponding path program 1 times [2022-09-29 15:02:43,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:02:43,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919054099] [2022-09-29 15:02:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:02:43,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:02:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:43,937 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:02:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:43,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:02:44,010 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:02:44,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:02:44,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:02:44,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:02:44,011 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 15:02:44,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:02:44,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:02:44,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration1_Loop [2022-09-29 15:02:44,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:02:44,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:02:44,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,070 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:02:44,071 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 15:02:44,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:44,079 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) [2022-09-29 15:02:44,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:02:44,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:02:44,098 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 [2022-09-29 15:02:44,117 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 [2022-09-29 15:02:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:44,119 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) [2022-09-29 15:02:44,120 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 [2022-09-29 15:02:44,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:02:44,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:02:44,235 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-09-29 15:02:44,238 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 [2022-09-29 15:02:44,238 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:02:44,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:02:44,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:02:44,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:02:44,239 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-09-29 15:02:44,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:02:44,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:02:44,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration1_Loop [2022-09-29 15:02:44,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:02:44,240 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:02:44,240 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,249 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,274 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:02:44,304 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-09-29 15:02:44,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:44,314 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) [2022-09-29 15:02:44,319 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 [2022-09-29 15:02:44,320 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 [2022-09-29 15:02:44,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-09-29 15:02:44,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-09-29 15:02:44,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-09-29 15:02:44,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-09-29 15:02:44,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-09-29 15:02:44,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-09-29 15:02:44,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-09-29 15:02:44,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-09-29 15:02:44,354 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-09-29 15:02:44,354 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-09-29 15:02:44,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:44,358 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) [2022-09-29 15:02:44,359 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 [2022-09-29 15:02:44,360 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-09-29 15:02:44,360 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-09-29 15:02:44,361 INFO L513 LassoAnalysis]: Proved termination. [2022-09-29 15:02:44,361 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N, thread1Thread1of1ForFork0_i) = 1*N - 1*thread1Thread1of1ForFork0_i Supporting invariants [] [2022-09-29 15:02:44,386 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 [2022-09-29 15:02:44,389 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-09-29 15:02:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 15:02:44,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-29 15:02:44,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 15:02:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 15:02:44,447 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-29 15:02:44,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 15:02:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 15:02:44,487 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 [2022-09-29 15:02:44,489 INFO L162 BuchiComplementFKV]: Start buchiComplementFKV with optimization HEIMAT2. 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) [2022-09-29 15:02:44,599 INFO L171 BuchiComplementFKV]: Finished buchiComplementFKV with optimization HEIMAT2. 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 6 states and 268 transitions.4 powerset states2 rank states. The highest rank that occured is 1 [2022-09-29 15:02:44,600 INFO L54 IntersectBuchiEager]: Starting Intersection [2022-09-29 15:02:44,605 INFO L61 IntersectBuchiEager]: Exiting Intersection [2022-09-29 15:02:44,608 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 [2022-09-29 15:02:44,614 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) [2022-09-29 15:02:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2022-09-29 15:02:44,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 3 letters. Loop has 1 letters. [2022-09-29 15:02:44,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:02:44,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 4 letters. Loop has 1 letters. [2022-09-29 15:02:44,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:02:44,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 3 letters. Loop has 2 letters. [2022-09-29 15:02:44,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:02:44,643 INFO L428 stractBuchiCegarLoop]: Abstraction has has 30 places, 212 transitions, 1046 flow [2022-09-29 15:02:44,643 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-09-29 15:02:44,643 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 30 places, 212 transitions, 1046 flow [2022-09-29 15:02:44,646 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 30 places, 212 transitions, 1046 flow [2022-09-29 15:02:44,647 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:44,648 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 30 places, 212 transitions, 1046 flow [2022-09-29 15:02:44,650 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:44,650 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 30 places, 212 transitions, 1046 flow [2022-09-29 15:02:44,654 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:44,654 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 15:02:44,654 INFO L123 PetriNetUnfolderBase]: 5/16 cut-off events. [2022-09-29 15:02:44,654 INFO L124 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2022-09-29 15:02:44,654 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 15:02:44,655 INFO L733 eck$LassoCheckResult]: Stem: 31#[ULTIMATE.startENTRY]true [32] ULTIMATE.startENTRY-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 33#[L16]true [62] L16-->thread1ENTRY: 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, thread1ENTRY]true [65] L16-1-->thread2ENTRY: 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] 88#[L17, thread2ENTRY, thread1ENTRY]true [54] thread2ENTRY-->L42-1: Formula: (= v_thread2Thread1of1ForFork1_j_1 0) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_1} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j] 90#[L17, L42-1, thread1ENTRY]true [2022-09-29 15:02:44,655 INFO L735 eck$LassoCheckResult]: Loop: 90#[L17, L42-1, thread1ENTRY]true [73] L42-1-->L42-1: Formula: (and (= (+ (- 1) v_x_31) v_x_30) (< v_thread2Thread1of1ForFork1_j_20 v_N_13) (= v_thread2Thread1of1ForFork1_j_19 (+ v_thread2Thread1of1ForFork1_j_20 1))) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_20, N=v_N_13, x=v_x_31} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_19, N=v_N_13, x=v_x_30} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j, x] 90#[L17, L42-1, thread1ENTRY]true [2022-09-29 15:02:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1938484, now seen corresponding path program 1 times [2022-09-29 15:02:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:02:44,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130614621] [2022-09-29 15:02:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:02:44,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:02:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:44,661 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:02:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:44,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:02:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 104, now seen corresponding path program 1 times [2022-09-29 15:02:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:02:44,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183426435] [2022-09-29 15:02:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:02:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:02:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:44,669 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:02:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:44,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:02:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 60093077, now seen corresponding path program 1 times [2022-09-29 15:02:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:02:44,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583937367] [2022-09-29 15:02:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:02:44,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:02:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:44,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:02:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:02:44,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:02:44,725 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:02:44,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:02:44,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:02:44,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:02:44,726 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 15:02:44,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:02:44,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:02:44,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration2_Loop [2022-09-29 15:02:44,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:02:44,726 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:02:44,727 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,733 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,756 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:02:44,756 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 15:02:44,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:44,760 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) [2022-09-29 15:02:44,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:02:44,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:02:44,780 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 [2022-09-29 15:02:44,819 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 [2022-09-29 15:02:44,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:44,821 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) [2022-09-29 15:02:44,823 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 [2022-09-29 15:02:44,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:02:44,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:02:44,975 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-09-29 15:02:44,982 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 [2022-09-29 15:02:44,983 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:02:44,983 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:02:44,983 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:02:44,983 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:02:44,983 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-09-29 15:02:44,983 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:44,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:02:44,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:02:44,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration2_Loop [2022-09-29 15:02:44,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:02:44,984 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:02:44,984 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:44,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:02:45,025 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:02:45,026 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-09-29 15:02:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:45,027 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) [2022-09-29 15:02:45,029 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 [2022-09-29 15:02:45,030 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 [2022-09-29 15:02:45,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-09-29 15:02:45,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-09-29 15:02:45,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-09-29 15:02:45,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-09-29 15:02:45,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-09-29 15:02:45,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-09-29 15:02:45,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-09-29 15:02:45,055 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-09-29 15:02:45,059 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-09-29 15:02:45,060 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-09-29 15:02:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:02:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:02:45,108 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) [2022-09-29 15:02:45,111 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 [2022-09-29 15:02:45,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-09-29 15:02:45,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-09-29 15:02:45,116 INFO L513 LassoAnalysis]: Proved termination. [2022-09-29 15:02:45,116 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread2Thread1of1ForFork1_j, N) = -1*thread2Thread1of1ForFork1_j + 1*N Supporting invariants [] [2022-09-29 15:02:45,140 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 [2022-09-29 15:02:45,141 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-09-29 15:02:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:02:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 15:02:45,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-29 15:02:45,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 15:02:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 15:02:45,180 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-29 15:02:45,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 15:02:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 15:02:45,184 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 [2022-09-29 15:02:45,184 INFO L162 BuchiComplementFKV]: Start buchiComplementFKV with optimization HEIMAT2. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 15:02:45,269 INFO L171 BuchiComplementFKV]: Finished buchiComplementFKV with optimization HEIMAT2. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 6 states and 268 transitions.4 powerset states2 rank states. The highest rank that occured is 1 [2022-09-29 15:02:45,269 INFO L54 IntersectBuchiEager]: Starting Intersection [2022-09-29 15:02:45,314 INFO L61 IntersectBuchiEager]: Exiting Intersection [2022-09-29 15:02:45,315 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 [2022-09-29 15:02:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 15:02:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2022-09-29 15:02:45,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 4 letters. Loop has 1 letters. [2022-09-29 15:02:45,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:02:45,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 5 letters. Loop has 1 letters. [2022-09-29 15:02:45,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:02:45,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 89 transitions. Stem has 4 letters. Loop has 2 letters. [2022-09-29 15:02:45,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:02:45,318 INFO L428 stractBuchiCegarLoop]: Abstraction has has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,318 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-09-29 15:02:45,318 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,346 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,356 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,358 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,367 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,380 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,393 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,397 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,412 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,414 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,428 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,444 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,457 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,461 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,469 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,470 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,474 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,485 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,494 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,518 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,527 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,528 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,537 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,546 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 42 places, 3420 transitions, 23760 flow [2022-09-29 15:02:45,559 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:02:45,584 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:02:45,584 INFO L123 PetriNetUnfolderBase]: 193/321 cut-off events. [2022-09-29 15:02:45,585 INFO L124 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2022-09-29 15:02:45,586 INFO L47 CFPrefixIsEmptyBuchi]: Starting emptiness check. [2022-09-29 15:02:45,586 INFO L62 CFPrefixIsEmptyBuchi]: Starting cutoff event analysis. [2022-09-29 15:02:45,586 INFO L72 CFPrefixIsEmptyBuchi]: Ended cutoff event analysis. [2022-09-29 15:02:45,587 INFO L76 CFPrefixIsEmptyBuchi]: Type 1 Lasso search started. [2022-09-29 15:02:45,587 INFO L87 CFPrefixIsEmptyBuchi]: Type 1 Lasso search ended. [2022-09-29 15:02:45,587 INFO L107 CFPrefixIsEmptyBuchi]: Type 3 Lasso search started. [2022-09-29 15:02:45,603 INFO L206 CFPrefixIsEmptyBuchi]: Type 3 Lasso search ended. [2022-09-29 15:02:45,603 INFO L50 CFPrefixIsEmptyBuchi]: Finished emptiness check, language is empty [2022-09-29 15:02:45,604 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is empty [2022-09-29 15:02:45,611 INFO L202 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.09 03:02:45 BoogieIcfgContainer [2022-09-29 15:02:45,611 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-09-29 15:02:45,615 INFO L158 Benchmark]: Toolchain (without parser) took 2535.97ms. Allocated memory was 169.9MB in the beginning and 249.6MB in the end (delta: 79.7MB). Free memory was 122.0MB in the beginning and 151.7MB in the end (delta: -29.7MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. [2022-09-29 15:02:45,616 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 15:02:45,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.68ms. Allocated memory is still 169.9MB. Free memory was 122.0MB in the beginning and 120.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-29 15:02:45,618 INFO L158 Benchmark]: Boogie Preprocessor took 15.72ms. Allocated memory is still 169.9MB. Free memory was 120.4MB in the beginning and 119.5MB in the end (delta: 903.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-29 15:02:45,618 INFO L158 Benchmark]: RCFGBuilder took 194.12ms. Allocated memory is still 169.9MB. Free memory was 119.5MB in the beginning and 110.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-09-29 15:02:45,621 INFO L158 Benchmark]: BuchiAutomizer took 2298.83ms. Allocated memory was 169.9MB in the beginning and 249.6MB in the end (delta: 79.7MB). Free memory was 110.8MB in the beginning and 151.7MB in the end (delta: -40.9MB). Peak memory consumption was 37.8MB. Max. memory is 8.0GB. [2022-09-29 15:02:45,624 INFO L339 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 0.16ms. Allocated memory is still 169.9MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.68ms. Allocated memory is still 169.9MB. Free memory was 122.0MB in the beginning and 120.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.72ms. Allocated memory is still 169.9MB. Free memory was 120.4MB in the beginning and 119.5MB in the end (delta: 903.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 194.12ms. Allocated memory is still 169.9MB. Free memory was 119.5MB in the beginning and 110.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2298.83ms. Allocated memory was 169.9MB in the beginning and 249.6MB in the end (delta: 79.7MB). Free memory was 110.8MB in the beginning and 151.7MB in the end (delta: -40.9MB). Peak memory consumption was 37.8MB. 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 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 1. 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: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 70 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp66 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 56ms 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: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 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, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 50, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 50, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 63, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 0, negative conditional: 0, negative 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 RESULT: Ultimate proved your program to be correct! [2022-09-29 15:02:45,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-09-29 15:02:45,869 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 [2022-09-29 15:02:46,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...