/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/sum-rwlock.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.omega-petrinet-638c691-m [2022-09-29 15:00:21,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 15:00:21,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 15:00:22,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 15:00:22,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 15:00:22,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 15:00:22,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 15:00:22,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 15:00:22,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 15:00:22,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 15:00:22,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 15:00:22,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 15:00:22,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 15:00:22,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 15:00:22,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 15:00:22,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 15:00:22,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 15:00:22,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 15:00:22,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 15:00:22,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 15:00:22,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 15:00:22,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 15:00:22,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 15:00:22,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 15:00:22,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-29 15:00:22,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 15:00:22,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 15:00:22,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 15:00:22,055 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 15:00:22,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 15:00:22,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 15:00:22,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 15:00:22,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 15:00:22,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 15:00:22,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 15:00:22,093 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 15:00:22,093 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-09-29 15:00:22,093 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-09-29 15:00:22,093 INFO L138 SettingsManager]: * Use old map elimination=false [2022-09-29 15:00:22,094 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-09-29 15:00:22,094 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-09-29 15:00:22,094 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-09-29 15:00:22,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 15:00:22,095 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 15:00:22,095 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-09-29 15:00:22,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 15:00:22,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 15:00:22,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 15:00:22,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-09-29 15:00:22,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-09-29 15:00:22,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-09-29 15:00:22,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 15:00:22,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 15:00:22,097 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-09-29 15:00:22,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 15:00:22,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-09-29 15:00:22,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 15:00:22,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 15:00:22,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 15:00:22,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 15:00:22,099 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-09-29 15:00:22,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 15:00:22,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 15:00:22,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 15:00:22,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 15:00:22,369 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 15:00:22,370 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 15:00:22,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/sum-rwlock.bpl [2022-09-29 15:00:22,371 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/sum-rwlock.bpl' [2022-09-29 15:00:22,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 15:00:22,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-29 15:00:22,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-29 15:00:22,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-29 15:00:22,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-29 15:00:22,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,436 INFO L137 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 22 [2022-09-29 15:00:22,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-29 15:00:22,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 15:00:22,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 15:00:22,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 15:00:22,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 15:00:22,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 15:00:22,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 15:00:22,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 15:00:22,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/1) ... [2022-09-29 15:00:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:22,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:22,493 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 15:00:22,505 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 15:00:22,535 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-29 15:00:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 15:00:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 15:00:22,535 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T1 given in one single declaration [2022-09-29 15:00:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure T1 [2022-09-29 15:00:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure T1 [2022-09-29 15:00:22,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T2 given in one single declaration [2022-09-29 15:00:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure T2 [2022-09-29 15:00:22,536 INFO L138 BoogieDeclarations]: Found implementation of procedure T2 [2022-09-29 15:00:22,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T3 given in one single declaration [2022-09-29 15:00:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure T3 [2022-09-29 15:00:22,536 INFO L138 BoogieDeclarations]: Found implementation of procedure T3 [2022-09-29 15:00:22,537 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 15:00:22,582 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 15:00:22,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 15:00:22,738 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 15:00:22,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 15:00:22,792 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-09-29 15:00:22,794 INFO L202 PluginConnector]: Adding new model sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:00:22 BoogieIcfgContainer [2022-09-29 15:00:22,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 15:00:22,795 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-09-29 15:00:22,795 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-09-29 15:00:22,798 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-09-29 15:00:22,798 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:00:22,799 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:00:22" (1/2) ... [2022-09-29 15:00:22,812 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79a2f904 and model type sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.09 03:00:22, skipping insertion in model container [2022-09-29 15:00:22,812 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:00:22,812 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:00:22" (2/2) ... [2022-09-29 15:00:22,813 INFO L322 chiAutomizerObserver]: Analyzing ICFG sum-rwlock.bpl [2022-09-29 15:00:22,862 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-29 15:00:22,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 36 transitions, 96 flow [2022-09-29 15:00:22,932 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:00:22,932 INFO L123 PetriNetUnfolderBase]: 3/30 cut-off events. [2022-09-29 15:00:22,932 INFO L124 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2022-09-29 15:00:22,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 3/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2022-09-29 15:00:22,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 36 transitions, 96 flow [2022-09-29 15:00:22,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 30 transitions, 78 flow [2022-09-29 15:00:22,942 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-09-29 15:00:22,962 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 30 transitions, 78 flow [2022-09-29 15:00:22,968 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 30 transitions, 78 flow [2022-09-29 15:00:22,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 78 flow [2022-09-29 15:00:22,985 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:00:22,985 INFO L123 PetriNetUnfolderBase]: 3/30 cut-off events. [2022-09-29 15:00:22,985 INFO L124 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2022-09-29 15:00:22,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 3/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2022-09-29 15:00:22,988 INFO L116 LiptonReduction]: Number of co-enabled transitions 300 [2022-09-29 15:00:23,429 INFO L131 LiptonReduction]: Checked pairs total: 308 [2022-09-29 15:00:23,429 INFO L133 LiptonReduction]: Total number of compositions: 11 [2022-09-29 15:00:23,464 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-09-29 15:00:23,464 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-09-29 15:00:23,465 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-09-29 15:00:23,465 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-09-29 15:00:23,465 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-09-29 15:00:23,465 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-09-29 15:00:23,465 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-09-29 15:00:23,465 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-09-29 15:00:23,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-09-29 15:00:23,545 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 49 [2022-09-29 15:00:23,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 15:00:23,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 15:00:23,550 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-09-29 15:00:23,550 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-09-29 15:00:23,550 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-09-29 15:00:23,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 66 states, but on-demand construction may add more states [2022-09-29 15:00:23,557 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 49 [2022-09-29 15:00:23,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 15:00:23,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 15:00:23,557 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-09-29 15:00:23,557 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-09-29 15:00:23,561 INFO L733 eck$LassoCheckResult]: Stem: 43#[ULTIMATE.startENTRY]don't care [139] ULTIMATE.startENTRY-->L66: Formula: (and (= v_x_20 0) (= v_y_20 0)) InVars {} OutVars{y=v_y_20, x=v_x_20} AuxVars[] AssignedVars[y, x] 46#[L66]don't care [124] L66-->L17: Formula: (= v_T1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{T1Thread1of1ForFork0_thidvar0=v_T1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[T1Thread1of1ForFork0_thidvar0] 48#[L17, L66-1]don't care [2022-09-29 15:00:23,562 INFO L735 eck$LassoCheckResult]: Loop: 48#[L17, L66-1]don't care [141] L17-->L17: Formula: (and (= v_y_22 (+ (- 1) v_y_23)) (= v_x_22 (+ v_x_23 1))) InVars {y=v_y_23, x=v_x_23} OutVars{y=v_y_22, x=v_x_22} AuxVars[] AssignedVars[y, x] 48#[L17, L66-1]don't care [2022-09-29 15:00:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 5394, now seen corresponding path program 1 times [2022-09-29 15:00:23,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:23,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050661192] [2022-09-29 15:00:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:23,636 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:23,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 172, now seen corresponding path program 1 times [2022-09-29 15:00:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:23,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582880343] [2022-09-29 15:00:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:23,670 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:23,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash 167355, now seen corresponding path program 1 times [2022-09-29 15:00:23,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:23,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643156896] [2022-09-29 15:00:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:23,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:23,693 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:23,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:23,797 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:00:23,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:00:23,798 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:00:23,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:00:23,798 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 15:00:23,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:23,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:00:23,799 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:00:23,799 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum-rwlock.bpl_BEv2_Iteration1_Loop [2022-09-29 15:00:23,799 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:00:23,799 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:00:23,814 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 15:00:23,824 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 15:00:23,853 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:00:23,854 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 15:00:23,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:23,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:23,863 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 15:00:23,868 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 15:00:23,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:00:23,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:23,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-09-29 15:00:23,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:23,899 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 15:00:23,899 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 15:00:23,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:00:23,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:23,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:00:23,989 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {y=0} Honda state: {y=0} Generalized eigenvectors: [{y=-5}, {y=-2}, {y=6}] Lambdas: [1, 4, 1] Nus: [0, 1] [2022-09-29 15:00:24,011 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 15:00:24,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,013 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 15:00:24,014 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 15:00:24,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:00:24,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,079 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 15:00:24,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,082 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 15:00:24,083 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 15:00:24,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:00:24,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:00:24,108 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=-1}, {x=-2}, {x=4}] Lambdas: [1, 3, 1] Nus: [0, 1] [2022-09-29 15:00:24,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-09-29 15:00:24,142 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:00:24,142 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:00:24,142 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:00:24,142 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:00:24,142 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 15:00:24,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:00:24,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:00:24,143 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum-rwlock.bpl_BEv2_Iteration1_Lasso [2022-09-29 15:00:24,143 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:00:24,143 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:00:24,144 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 15:00:24,148 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 15:00:24,153 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 15:00:24,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:00:24,190 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 15:00:24,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,196 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 15:00:24,197 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 15:00:24,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:00:24,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,243 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 15:00:24,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,245 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 15:00:24,250 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 15:00:24,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:00:24,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:00:24,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=-1}, {x=-2}, {x=4}] Lambdas: [1, 3, 1] Nus: [0, 1] [2022-09-29 15:00:24,285 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 15:00:24,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,287 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 15:00:24,287 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 15:00:24,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:00:24,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,311 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 15:00:24,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,312 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 15:00:24,313 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 15:00:24,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:00:24,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:00:24,333 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {y=0} Honda state: {y=0} Generalized eigenvectors: [{y=-5}, {y=-2}, {y=6}] Lambdas: [1, 4, 1] Nus: [0, 1] [2022-09-29 15:00:24,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-09-29 15:00:24,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:24,350 INFO L229 MonitoredProcess]: Starting monitored process 10 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 15:00:24,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-09-29 15:00:24,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:00:24,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:00:24,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:00:24,360 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {T1Thread1of1ForFork0_thidvar0=0} Honda state: {T1Thread1of1ForFork0_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-09-29 15:00:24,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-09-29 15:00:24,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] [2022-09-29 15:00:24,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] [2022-09-29 15:00:24,382 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier3,QUANTIFIED] [2022-09-29 15:00:24,387 INFO L202 PluginConnector]: Adding new model sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.09 03:00:24 BoogieIcfgContainer [2022-09-29 15:00:24,387 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-09-29 15:00:24,389 INFO L158 Benchmark]: Toolchain (without parser) took 1988.45ms. Allocated memory was 195.0MB in the beginning and 273.7MB in the end (delta: 78.6MB). Free memory was 149.0MB in the beginning and 225.1MB in the end (delta: -76.1MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. [2022-09-29 15:00:24,390 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 150.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 15:00:24,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.64ms. Allocated memory is still 195.0MB. Free memory was 148.8MB in the beginning and 146.9MB in the end (delta: 2.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-29 15:00:24,391 INFO L158 Benchmark]: Boogie Preprocessor took 24.21ms. Allocated memory is still 195.0MB. Free memory was 146.9MB in the beginning and 146.0MB in the end (delta: 913.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 15:00:24,391 INFO L158 Benchmark]: RCFGBuilder took 329.69ms. Allocated memory is still 195.0MB. Free memory was 145.9MB in the beginning and 164.8MB in the end (delta: -18.9MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2022-09-29 15:00:24,392 INFO L158 Benchmark]: BuchiAutomizer took 1592.90ms. Allocated memory was 195.0MB in the beginning and 273.7MB in the end (delta: 78.6MB). Free memory was 164.8MB in the beginning and 225.1MB in the end (delta: -60.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-09-29 15:00:24,394 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 0.15ms. Allocated memory is still 195.0MB. Free memory is still 150.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.64ms. Allocated memory is still 195.0MB. Free memory was 148.8MB in the beginning and 146.9MB in the end (delta: 2.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.21ms. Allocated memory is still 195.0MB. Free memory was 146.9MB in the beginning and 146.0MB in the end (delta: 913.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 329.69ms. Allocated memory is still 195.0MB. Free memory was 145.9MB in the beginning and 164.8MB in the end (delta: -18.9MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. * BuchiAutomizer took 1592.90ms. Allocated memory was 195.0MB in the beginning and 273.7MB in the end (delta: 78.6MB). Free memory was 164.8MB in the beginning and 225.1MB in the end (delta: -60.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier3,QUANTIFIED] * 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 1.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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: Lassos: inital16 mio100 ax100 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq212 hnf100 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 17]: Nontermination argument in form of an infinite program execution. [2022-09-29 15:00:24,399 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier4,QUANTIFIED] [2022-09-29 15:00:24,399 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier5,QUANTIFIED] [2022-09-29 15:00:24,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier6,QUANTIFIED] [2022-09-29 15:00:24,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier7,QUANTIFIED] [2022-09-29 15:00:24,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier8,QUANTIFIED] [2022-09-29 15:00:24,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier9,QUANTIFIED] Nontermination argument in form of an infinite execution State at position 0 is {x=0, y=0, freshIdentifier7=0} State at position 1 is {x=0, y=0, freshIdentifier8=1} For i>1, the state at position i is {x=0 + sum_{k=0}^i -1 + -2*3^k + 4 + 4*k*3^(k-1), y=0 + sum_{k=0}^i -5 + -2*4^k + 6 + 6*k*4^(k-1), freshIdentifier9=1 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 6GEVs Lambdas: [1, 3, 1, 1, 4, 1] Mus: [0, 1, 0, 0, 1] - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L63] 0 x := 0; [L64] 0 y := 0; [L66] FORK 0 fork 1 T1(); Loop: [L18] x := x + 1; [L19] y := y - 1; End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 37 PlacesBefore, 26 PlacesAfterwards, 30 TransitionsBefore, 19 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 308 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 285, positive: 275, positive conditional: 0, positive unconditional: 275, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 196, positive: 190, positive conditional: 0, positive unconditional: 190, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 196, positive: 176, positive conditional: 0, positive unconditional: 176, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 131, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 285, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 196, unknown conditional: 0, unknown unconditional: 196] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 RESULT: Ultimate proved your program to be incorrect! [2022-09-29 15:00:24,421 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...