/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/motivating.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.omega-petrinet-638c691-m [2022-09-29 15:06:25,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 15:06:25,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 15:06:26,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 15:06:26,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 15:06:26,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 15:06:26,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 15:06:26,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 15:06:26,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 15:06:26,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 15:06:26,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 15:06:26,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-09-29 15:06:26,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 15:06:26,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 15:06:26,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 15:06:26,055 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 15:06:26,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 15:06:26,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 15:06:26,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 15:06:26,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 15:06:26,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 15:06:26,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 15:06:26,076 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 15:06:26,076 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-09-29 15:06:26,077 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-09-29 15:06:26,077 INFO L138 SettingsManager]: * Use old map elimination=false [2022-09-29 15:06:26,077 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-09-29 15:06:26,077 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-09-29 15:06:26,077 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-09-29 15:06:26,077 INFO L138 SettingsManager]: * Automaton type for concurrent programs=BUCHI_PETRI_NET [2022-09-29 15:06:26,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 15:06:26,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 15:06:26,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-09-29 15:06:26,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 15:06:26,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 15:06:26,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 15:06:26,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-09-29 15:06:26,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-09-29 15:06:26,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-09-29 15:06:26,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 15:06:26,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 15:06:26,079 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-09-29 15:06:26,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 15:06:26,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-09-29 15:06:26,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 15:06:26,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 15:06:26,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 15:06:26,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 15:06:26,081 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-09-29 15:06:26,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 15:06:26,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 15:06:26,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 15:06:26,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 15:06:26,320 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 15:06:26,321 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 15:06:26,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl [2022-09-29 15:06:26,322 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl' [2022-09-29 15:06:26,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 15:06:26,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-29 15:06:26,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-29 15:06:26,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-29 15:06:26,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-29 15:06:26,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,378 INFO L137 Inliner]: procedures = 4, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-29 15:06:26,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-29 15:06:26,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 15:06:26,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 15:06:26,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 15:06:26,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 15:06:26,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 15:06:26,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 15:06:26,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 15:06:26,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/1) ... [2022-09-29 15:06:26,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:06:26,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:06:26,445 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 15:06:26,465 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 15:06:26,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-09-29 15:06:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-29 15:06:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-29 15:06:26,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-09-29 15:06:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-29 15:06:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-29 15:06:26,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-09-29 15:06:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-29 15:06:26,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-29 15:06:26,497 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-29 15:06:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 15:06:26,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 15:06:26,499 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 15:06:26,545 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 15:06:26,547 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 15:06:26,646 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 15:06:26,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 15:06:26,652 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-29 15:06:26,654 INFO L202 PluginConnector]: Adding new model motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:06:26 BoogieIcfgContainer [2022-09-29 15:06:26,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 15:06:26,655 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-09-29 15:06:26,655 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-09-29 15:06:26,658 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-09-29 15:06:26,658 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:06:26,658 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 03:06:26" (1/2) ... [2022-09-29 15:06:26,660 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@113893fe and model type motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.09 03:06:26, skipping insertion in model container [2022-09-29 15:06:26,660 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 15:06:26,660 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 03:06:26" (2/2) ... [2022-09-29 15:06:26,661 INFO L322 chiAutomizerObserver]: Analyzing ICFG motivating.bpl [2022-09-29 15:06:26,752 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-09-29 15:06:26,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 63 transitions, 174 flow [2022-09-29 15:06:26,847 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:06:26,847 INFO L123 PetriNetUnfolderBase]: 12/51 cut-off events. [2022-09-29 15:06:26,848 INFO L124 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2022-09-29 15:06:26,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 51 events. 12/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 49. Up to 3 conditions per place. [2022-09-29 15:06:26,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 63 transitions, 174 flow [2022-09-29 15:06:26,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 51 transitions, 138 flow [2022-09-29 15:06:26,872 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-09-29 15:06:26,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 51 transitions, 138 flow [2022-09-29 15:06:26,898 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 51 transitions, 138 flow [2022-09-29 15:06:26,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 138 flow [2022-09-29 15:06:26,925 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 15:06:26,925 INFO L123 PetriNetUnfolderBase]: 12/51 cut-off events. [2022-09-29 15:06:26,925 INFO L124 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2022-09-29 15:06:26,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 51 events. 12/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 49. Up to 3 conditions per place. [2022-09-29 15:06:26,929 INFO L116 LiptonReduction]: Number of co-enabled transitions 1290 [2022-09-29 15:06:27,370 INFO L131 LiptonReduction]: Checked pairs total: 3006 [2022-09-29 15:06:27,370 INFO L133 LiptonReduction]: Total number of compositions: 14 [2022-09-29 15:06:27,381 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-09-29 15:06:27,381 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-09-29 15:06:27,382 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-09-29 15:06:27,382 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-09-29 15:06:27,382 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-09-29 15:06:27,382 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-09-29 15:06:27,382 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-09-29 15:06:27,382 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2022-09-29 15:06:27,383 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 49 places, 40 transitions, 116 flow [2022-09-29 15:06:27,386 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 49 places, 40 transitions, 116 flow [2022-09-29 15:06:27,387 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:06:27,388 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 15:06:27,388 INFO L123 PetriNetUnfolderBase]: 0/3 cut-off events. [2022-09-29 15:06:27,388 INFO L124 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2022-09-29 15:06:27,388 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 15:06:27,390 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-09-29 15:06:27,390 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 49 places, 40 transitions, 116 flow [2022-09-29 15:06:27,391 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 49 places, 40 transitions, 116 flow [2022-09-29 15:06:27,392 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 15:06:27,392 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 15:06:27,392 INFO L123 PetriNetUnfolderBase]: 0/3 cut-off events. [2022-09-29 15:06:27,392 INFO L124 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2022-09-29 15:06:27,392 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 15:06:27,397 INFO L733 eck$LassoCheckResult]: Stem: 68#[ULTIMATE.startENTRY]true [159] ULTIMATE.startENTRY-->L21: Formula: (and (= v_i_39 0) (< v_ULTIMATE.start_m_6 v_N_38) (<= 0 v_ULTIMATE.start_m_6)) InVars {ULTIMATE.start_m=v_ULTIMATE.start_m_6, N=v_N_38} OutVars{ULTIMATE.start_m=v_ULTIMATE.start_m_6, N=v_N_38, i=v_i_39} AuxVars[] AssignedVars[i] 70#[L21]true [133] L21-->L43-2: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0] 72#[L43-2, L21-1]true [2022-09-29 15:06:27,397 INFO L735 eck$LassoCheckResult]: Loop: 72#[L43-2, L21-1]true [94] L43-2-->L43: Formula: true InVars {} OutVars{i=v_i_1} AuxVars[] AssignedVars[i] 75#[L43, L21-1]true [97] L43-->L43-2: Formula: (or (not (<= 0 v_i_4)) (not (< v_i_4 v_N_2))) InVars {i=v_i_4, N=v_N_2} OutVars{i=v_i_4, N=v_N_2} AuxVars[] AssignedVars[] 72#[L43-2, L21-1]true [2022-09-29 15:06:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:06:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 6023, now seen corresponding path program 1 times [2022-09-29 15:06:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:06:27,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406749272] [2022-09-29 15:06:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:06:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:06:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:06:27,482 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:06:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:06:27,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:06:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:06:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash 3972, now seen corresponding path program 1 times [2022-09-29 15:06:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:06:27,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367366168] [2022-09-29 15:06:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:06:27,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:06:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:06:27,524 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:06:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:06:27,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:06:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:06:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 5791114, now seen corresponding path program 1 times [2022-09-29 15:06:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:06:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245814951] [2022-09-29 15:06:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:06:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:06:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:06:27,549 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:06:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:06:27,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:06:27,629 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:06:27,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:06:27,630 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:06:27,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:06:27,630 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 15:06:27,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:06:27,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:06:27,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:06:27,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: motivating.bpl_BEv2_Iteration1_Lasso [2022-09-29 15:06:27,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:06:27,631 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:06:27,683 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 15:06:27,703 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 15:06:27,754 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:06:27,754 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 15:06:27,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:06:27,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:06:27,763 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 15:06:27,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:06:27,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:06:27,783 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 15:06:27,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:06:27,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-09-29 15:06:27,819 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 15:06:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:06:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:06:27,822 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 15:06:27,829 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 15:06:27,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 15:06:27,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:06:27,880 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 15:06:27,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:06:27,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:06:27,882 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 15:06:27,884 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 15:06:27,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 15:06:27,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 15:06:27,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-09-29 15:06:27,925 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_m=0, N=3, i=0} Honda state: {ULTIMATE.start_m=0, N=3, i=0} Generalized eigenvectors: [{ULTIMATE.start_m=-1, N=-6, i=-2}, {ULTIMATE.start_m=1, N=6, i=6}, {ULTIMATE.start_m=0, N=0, i=-6}] Lambdas: [1, 1, 9] Nus: [0, 1] [2022-09-29 15:06:27,951 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 15:06:27,960 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] [2022-09-29 15:06:27,961 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] [2022-09-29 15:06:27,961 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier3,QUANTIFIED] [2022-09-29 15:06:27,969 INFO L202 PluginConnector]: Adding new model motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.09 03:06:27 BoogieIcfgContainer [2022-09-29 15:06:27,969 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-09-29 15:06:27,971 INFO L158 Benchmark]: Toolchain (without parser) took 1618.73ms. Allocated memory was 197.1MB in the beginning and 261.1MB in the end (delta: 64.0MB). Free memory was 151.8MB in the beginning and 224.4MB in the end (delta: -72.6MB). Peak memory consumption was 33.7MB. Max. memory is 8.0GB. [2022-09-29 15:06:27,972 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 15:06:27,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.40ms. Allocated memory is still 197.1MB. Free memory was 151.7MB in the beginning and 150.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-29 15:06:27,974 INFO L158 Benchmark]: Boogie Preprocessor took 25.83ms. Allocated memory is still 197.1MB. Free memory was 150.3MB in the beginning and 149.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-29 15:06:27,975 INFO L158 Benchmark]: RCFGBuilder took 243.02ms. Allocated memory is still 197.1MB. Free memory was 149.1MB in the beginning and 168.1MB in the end (delta: -19.0MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-09-29 15:06:27,979 INFO L158 Benchmark]: BuchiAutomizer took 1314.63ms. Allocated memory was 197.1MB in the beginning and 261.1MB in the end (delta: 64.0MB). Free memory was 167.9MB in the beginning and 224.4MB in the end (delta: -56.6MB). Peak memory consumption was 48.0MB. Max. memory is 8.0GB. [2022-09-29 15:06:27,981 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 0.12ms. Allocated memory is still 197.1MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.40ms. Allocated memory is still 197.1MB. Free memory was 151.7MB in the beginning and 150.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.83ms. Allocated memory is still 197.1MB. Free memory was 150.3MB in the beginning and 149.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 243.02ms. Allocated memory is still 197.1MB. Free memory was 149.1MB in the beginning and 168.1MB in the end (delta: -19.0MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * BuchiAutomizer took 1314.63ms. Allocated memory was 197.1MB in the beginning and 261.1MB in the end (delta: 64.0MB). Free memory was 167.9MB in the beginning and 224.4MB in the end (delta: -56.6MB). Peak memory consumption was 48.0MB. 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 1.1s and 1 iterations. TraceHistogramMax:0. Analysis of lassos took 0.5s. 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: inital22 mio100 ax100 hnf100 lsp86 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq121 hnf95 smp100 dnf100 smp100 tf100 neg90 sie120 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 41]: Nontermination argument in form of an infinite program execution. [2022-09-29 15:06:27,994 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier4,QUANTIFIED] [2022-09-29 15:06:27,995 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier5,QUANTIFIED] [2022-09-29 15:06:27,997 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier6,QUANTIFIED] [2022-09-29 15:06:27,997 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier7,QUANTIFIED] [2022-09-29 15:06:27,997 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier8,QUANTIFIED] [2022-09-29 15:06:27,998 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 {N=3, i=0, m=0, freshIdentifier7=0} State at position 1 is {N=3, i=0, m=0, freshIdentifier8=1} For i>1, the state at position i is {N=3 + sum_{k=0}^i -6 + 6, i=0 + sum_{k=0}^i -2 + 6 + -6*9^k + -6*k, m=0 + sum_{k=0}^i -1 + 1, freshIdentifier9=1 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 3GEVs Lambdas: [1, 1, 9] Mus: [0, 1] - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] 0 assume 0 <= m && m < N; [L19] 0 i := 0; [L21] FORK 0 fork 1 thread1(); Loop: [L42] havoc i; [L43] COND FALSE !(0 <= i && i < N) End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 58 PlacesBefore, 49 PlacesAfterwards, 51 TransitionsBefore, 40 TransitionsAfterwards, 1290 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 2 ChoiceCompositions, 14 TotalNumberOfCompositions, 3006 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1538, positive: 1464, positive conditional: 0, positive unconditional: 1464, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 687, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 687, positive: 659, positive conditional: 0, positive unconditional: 659, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1538, positive: 797, positive conditional: 0, positive unconditional: 797, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 687, unknown conditional: 0, unknown unconditional: 687] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 297, Positive conditional cache size: 0, Positive unconditional cache size: 297, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 RESULT: Ultimate proved your program to be incorrect! [2022-09-29 15:06:28,023 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...