/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-automaton-semanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.omega-petrinet-638c691-m [2022-09-29 15:00:16,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 15:00:16,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 15:00:16,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 15:00:16,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 15:00:16,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 15:00:16,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 15:00:16,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 15:00:16,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 15:00:16,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 15:00:16,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 15:00:16,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 15:00:16,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 15:00:16,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 15:00:16,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 15:00:16,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 15:00:16,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 15:00:16,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 15:00:16,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 15:00:16,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 15:00:16,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 15:00:16,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 15:00:16,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 15:00:16,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 15:00:16,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-29 15:00:16,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 15:00:16,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 15:00:16,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 15:00:16,175 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf [2022-09-29 15:00:16,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 15:00:16,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 15:00:16,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 15:00:16,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 15:00:16,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 15:00:16,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 15:00:16,206 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 15:00:16,207 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-09-29 15:00:16,207 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-09-29 15:00:16,207 INFO L138 SettingsManager]: * Use old map elimination=false [2022-09-29 15:00:16,207 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-09-29 15:00:16,207 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-09-29 15:00:16,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 15:00:16,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-09-29 15:00:16,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-09-29 15:00:16,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-09-29 15:00:16,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 15:00:16,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 15:00:16,210 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-09-29 15:00:16,210 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 15:00:16,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-09-29 15:00:16,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 15:00:16,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 15:00:16,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 15:00:16,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 15:00:16,212 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-09-29 15:00:16,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 15:00:16,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 15:00:16,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 15:00:16,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 15:00:16,461 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 15:00:16,462 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 15:00:16,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample.bpl [2022-09-29 15:00:16,463 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample.bpl' [2022-09-29 15:00:16,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 15:00:16,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-29 15:00:16,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-29 15:00:16,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-29 15:00:16,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-29 15:00:16,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,547 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-29 15:00:16,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-29 15:00:16,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 15:00:16,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 15:00:16,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 15:00:16,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 15:00:16,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 15:00:16,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 15:00:16,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 15:00:16,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/1) ... [2022-09-29 15:00:16,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:16,648 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 15:00:16,702 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 15:00:16,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMax given in one single declaration [2022-09-29 15:00:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure computeMax [2022-09-29 15:00:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMax [2022-09-29 15:00:16,727 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-29 15:00:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 15:00:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 15:00:16,728 INFO L124 BoogieDeclarations]: Specification and implementation of procedure sample given in one single declaration [2022-09-29 15:00:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure sample [2022-09-29 15:00:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure sample [2022-09-29 15:00:16,728 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMin given in one single declaration [2022-09-29 15:00:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure computeMin [2022-09-29 15:00:16,729 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMin [2022-09-29 15:00:16,729 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 15:00:16,765 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 15:00:16,767 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 15:00:16,888 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 15:00:16,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 15:00:16,897 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-09-29 15:00:16,899 INFO L202 PluginConnector]: Adding new model min-max-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:00:16 BoogieIcfgContainer [2022-09-29 15:00:16,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 15:00:16,899 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-09-29 15:00:16,899 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-09-29 15:00:16,912 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-09-29 15:00:16,912 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:00:16,913 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:16" (1/2) ... [2022-09-29 15:00:16,914 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cc833f3 and model type min-max-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.09 03:00:16, skipping insertion in model container [2022-09-29 15:00:16,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:00:16,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min-max-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:00:16" (2/2) ... [2022-09-29 15:00:16,915 INFO L322 chiAutomizerObserver]: Analyzing ICFG min-max-sample.bpl [2022-09-29 15:00:16,984 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-29 15:00:17,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 79 flow [2022-09-29 15:00:17,054 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:00:17,054 INFO L123 PetriNetUnfolderBase]: 3/23 cut-off events. [2022-09-29 15:00:17,054 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 15:00:17,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 23 events. 3/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 37 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2022-09-29 15:00:17,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 79 flow [2022-09-29 15:00:17,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 61 flow [2022-09-29 15:00:17,067 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-09-29 15:00:17,082 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 61 flow [2022-09-29 15:00:17,087 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 61 flow [2022-09-29 15:00:17,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 61 flow [2022-09-29 15:00:17,104 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:00:17,105 INFO L123 PetriNetUnfolderBase]: 3/23 cut-off events. [2022-09-29 15:00:17,105 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 15:00:17,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 23 events. 3/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2022-09-29 15:00:17,106 INFO L116 LiptonReduction]: Number of co-enabled transitions 222 [2022-09-29 15:00:17,245 INFO L131 LiptonReduction]: Checked pairs total: 203 [2022-09-29 15:00:17,245 INFO L133 LiptonReduction]: Total number of compositions: 5 [2022-09-29 15:00:17,258 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-09-29 15:00:17,259 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-09-29 15:00:17,259 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-09-29 15:00:17,259 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-09-29 15:00:17,259 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-09-29 15:00:17,259 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-09-29 15:00:17,259 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-09-29 15:00:17,259 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-09-29 15:00:17,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-09-29 15:00:17,362 INFO L131 ngComponentsAnalysis]: Automaton has 39 accepting balls. 62 [2022-09-29 15:00:17,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 15:00:17,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 15:00:17,367 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-09-29 15:00:17,371 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-09-29 15:00:17,372 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-09-29 15:00:17,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 89 states, but on-demand construction may add more states [2022-09-29 15:00:17,389 INFO L131 ngComponentsAnalysis]: Automaton has 39 accepting balls. 62 [2022-09-29 15:00:17,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 15:00:17,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 15:00:17,389 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-09-29 15:00:17,389 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-09-29 15:00:17,409 INFO L733 eck$LassoCheckResult]: Stem: 36#[ULTIMATE.startENTRY]don't care [78] ULTIMATE.startENTRY-->computeMinENTRY: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_thidvar0] 39#[L68, computeMinENTRY]don't care [81] L68-->computeMaxENTRY: Formula: (and (= v_computeMaxThread1of1ForFork1_thidvar0_2 2) (= v_computeMaxThread1of1ForFork1_thidvar1_2 2)) InVars {} OutVars{computeMaxThread1of1ForFork1_thidvar0=v_computeMaxThread1of1ForFork1_thidvar0_2, computeMaxThread1of1ForFork1_thidvar1=v_computeMaxThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[computeMaxThread1of1ForFork1_thidvar0, computeMaxThread1of1ForFork1_thidvar1] 41#[computeMaxENTRY, computeMinENTRY, L69]don't care [84] L69-->L59: Formula: (and (= v_sampleThread1of1ForFork2_thidvar0_2 3) (= v_sampleThread1of1ForFork2_thidvar2_2 3) (= v_sampleThread1of1ForFork2_thidvar1_2 3)) InVars {} OutVars{sampleThread1of1ForFork2_thidvar0=v_sampleThread1of1ForFork2_thidvar0_2, sampleThread1of1ForFork2_thidvar2=v_sampleThread1of1ForFork2_thidvar2_2, sampleThread1of1ForFork2_thidvar1=v_sampleThread1of1ForFork2_thidvar1_2} AuxVars[] AssignedVars[sampleThread1of1ForFork2_thidvar0, sampleThread1of1ForFork2_thidvar2, sampleThread1of1ForFork2_thidvar1] 45#[computeMaxENTRY, L70, L59, computeMinENTRY]don't care [2022-09-29 15:00:17,410 INFO L735 eck$LassoCheckResult]: Loop: 45#[computeMaxENTRY, L70, L59, computeMinENTRY]don't care [67] L59-->L61: Formula: (= v_min_samples_1 (store v_min_samples_2 (+ (- 1) v_i1_1) v_array_min_3)) InVars {min_samples=v_min_samples_2, i1=v_i1_1, array_min=v_array_min_3} OutVars{min_samples=v_min_samples_1, i1=v_i1_1, array_min=v_array_min_3} AuxVars[] AssignedVars[min_samples] 53#[L61, computeMaxENTRY, L70, computeMinENTRY]don't care [69] L61-->L59: Formula: (= (store v_max_samples_2 (+ (- 1) v_i2_7) v_array_max_6) v_max_samples_1) InVars {i2=v_i2_7, array_max=v_array_max_6, max_samples=v_max_samples_2} OutVars{i2=v_i2_7, array_max=v_array_max_6, max_samples=v_max_samples_1} AuxVars[] AssignedVars[max_samples] 45#[computeMaxENTRY, L70, L59, computeMinENTRY]don't care [2022-09-29 15:00:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 107344, now seen corresponding path program 1 times [2022-09-29 15:00:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:17,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484878716] [2022-09-29 15:00:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:17,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:17,515 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:17,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 3107, now seen corresponding path program 1 times [2022-09-29 15:00:17,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:17,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850579367] [2022-09-29 15:00:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:17,557 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:17,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 103159730, now seen corresponding path program 1 times [2022-09-29 15:00:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:17,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648891868] [2022-09-29 15:00:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:17,585 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:17,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:17,721 INFO L202 PluginConnector]: Adding new model min-max-sample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.09 03:00:17 BoogieIcfgContainer [2022-09-29 15:00:17,721 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-09-29 15:00:17,722 INFO L158 Benchmark]: Toolchain (without parser) took 1208.66ms. Allocated memory was 194.0MB in the beginning and 260.0MB in the end (delta: 66.1MB). Free memory was 150.4MB in the beginning and 233.0MB in the end (delta: -82.7MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-09-29 15:00:17,723 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 194.0MB. Free memory was 151.5MB in the beginning and 151.4MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 15:00:17,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.33ms. Allocated memory is still 194.0MB. Free memory was 150.3MB in the beginning and 148.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-29 15:00:17,724 INFO L158 Benchmark]: Boogie Preprocessor took 32.95ms. Allocated memory is still 194.0MB. Free memory was 148.7MB in the beginning and 147.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-29 15:00:17,724 INFO L158 Benchmark]: RCFGBuilder took 315.21ms. Allocated memory is still 194.0MB. Free memory was 147.7MB in the beginning and 168.0MB in the end (delta: -20.3MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-09-29 15:00:17,725 INFO L158 Benchmark]: BuchiAutomizer took 822.11ms. Allocated memory was 194.0MB in the beginning and 260.0MB in the end (delta: 66.1MB). Free memory was 168.0MB in the beginning and 233.0MB in the end (delta: -65.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-09-29 15:00:17,727 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 0.14ms. Allocated memory is still 194.0MB. Free memory was 151.5MB in the beginning and 151.4MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.33ms. Allocated memory is still 194.0MB. Free memory was 150.3MB in the beginning and 148.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.95ms. Allocated memory is still 194.0MB. Free memory was 148.7MB in the beginning and 147.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 315.21ms. Allocated memory is still 194.0MB. Free memory was 147.7MB in the beginning and 168.0MB in the end (delta: -20.3MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * BuchiAutomizer took 822.11ms. Allocated memory was 194.0MB in the beginning and 260.0MB in the end (delta: 66.1MB). Free memory was 168.0MB in the beginning and 233.0MB in the end (delta: -65.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 59]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {array_max=5, array_min=4, i1=0, i2=976} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 59]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L68] FORK 0 fork 1 computeMin(); [L69] FORK 0 fork 2, 2 computeMax(); [L70] FORK 0 fork 3, 3, 3 sample(); Loop: [L60] min_samples[i1 - 1] := array_min; [L61] max_samples[i2 - 1] := array_max; End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 30 PlacesBefore, 25 PlacesAfterwards, 23 TransitionsBefore, 18 TransitionsAfterwards, 222 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 203 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 94, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 94, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 107, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 94, unknown conditional: 0, unknown unconditional: 94] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 RESULT: Ultimate proved your program to be incorrect! [2022-09-29 15:00:17,756 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...