/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample-with_locks.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:12:31,938 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:12:31,997 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:12:32,015 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:12:32,015 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:12:32,016 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:12:32,017 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:12:32,017 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:12:32,017 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:12:32,018 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:12:32,018 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:12:32,018 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:12:32,019 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:12:32,019 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:12:32,019 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:12:32,020 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:12:32,020 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:12:32,020 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:12:32,021 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:12:32,021 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:12:32,021 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:12:32,023 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:12:32,023 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:12:32,023 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:12:32,023 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:12:32,023 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:12:32,024 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:12:32,024 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:12:32,024 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:12:32,024 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:12:32,025 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:12:32,025 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:12:32,025 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:12:32,027 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:12:32,027 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:12:32,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:12:32,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:12:32,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:12:32,231 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:12:32,232 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:12:32,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample-with_locks.bpl [2023-10-12 17:12:32,233 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample-with_locks.bpl' [2023-10-12 17:12:32,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:12:32,257 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:12:32,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:32,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:12:32,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:12:32,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,288 INFO L138 Inliner]: procedures = 8, calls = 11, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 37 [2023-10-12 17:12:32,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:32,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:12:32,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:12:32,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:12:32,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:12:32,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:12:32,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:12:32,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:12:32,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/1) ... [2023-10-12 17:12:32,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:32,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:32,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:12:32,394 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMax given in one single declaration [2023-10-12 17:12:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure computeMax [2023-10-12 17:12:32,394 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMax [2023-10-12 17:12:32,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:12:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:12:32,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:12:32,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure sample given in one single declaration [2023-10-12 17:12:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure sample [2023-10-12 17:12:32,396 INFO L138 BoogieDeclarations]: Found implementation of procedure sample [2023-10-12 17:12:32,396 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMin given in one single declaration [2023-10-12 17:12:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure computeMin [2023-10-12 17:12:32,396 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMin [2023-10-12 17:12:32,397 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:12:32,447 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:12:32,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:12:32,539 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:12:32,550 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:12:32,550 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-10-12 17:12:32,552 INFO L201 PluginConnector]: Adding new model min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:32 BoogieIcfgContainer [2023-10-12 17:12:32,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:12:32,553 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:12:32,553 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:12:32,556 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:12:32,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:32,557 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:32" (1/2) ... [2023-10-12 17:12:32,558 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4340143f and model type min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:12:32, skipping insertion in model container [2023-10-12 17:12:32,558 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:32,558 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:32" (2/2) ... [2023-10-12 17:12:32,559 INFO L332 chiAutomizerObserver]: Analyzing ICFG min-max-sample-with_locks.bpl [2023-10-12 17:12:32,612 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:12:32,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 109 flow [2023-10-12 17:12:32,670 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2023-10-12 17:12:32,670 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:32,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 38 events. 3/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-10-12 17:12:32,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 109 flow [2023-10-12 17:12:32,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 38 transitions, 91 flow [2023-10-12 17:12:32,682 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:12:32,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 38 transitions, 91 flow [2023-10-12 17:12:32,698 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 38 transitions, 91 flow [2023-10-12 17:12:32,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 38 transitions, 91 flow [2023-10-12 17:12:32,707 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2023-10-12 17:12:32,707 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:32,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 38 events. 3/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-10-12 17:12:32,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 780 [2023-10-12 17:12:32,938 INFO L134 LiptonReduction]: Checked pairs total: 1121 [2023-10-12 17:12:32,938 INFO L136 LiptonReduction]: Total number of compositions: 10 [2023-10-12 17:12:32,955 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:12:32,955 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:12:32,955 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:12:32,955 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:12:32,955 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:12:32,956 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:12:32,956 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:12:32,956 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:12:32,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:12:33,068 INFO L131 ngComponentsAnalysis]: Automaton has 39 accepting balls. 442 [2023-10-12 17:12:33,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:33,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:33,073 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:33,073 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-10-12 17:12:33,073 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:12:33,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 469 states, but on-demand construction may add more states [2023-10-12 17:12:33,101 INFO L131 ngComponentsAnalysis]: Automaton has 39 accepting balls. 442 [2023-10-12 17:12:33,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:33,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:33,102 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:33,102 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-10-12 17:12:33,114 INFO L748 eck$LassoCheckResult]: Stem: 51#[$Ultimate##0]don't care [135] $Ultimate##0-->$Ultimate##0: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_thidvar0] 54#[$Ultimate##0, L74]don't care [138] L74-->$Ultimate##0: Formula: (and (= v_computeMaxThread1of1ForFork1_thidvar0_2 2) (= v_computeMaxThread1of1ForFork1_thidvar1_2 2)) InVars {} OutVars{computeMaxThread1of1ForFork1_thidvar0=v_computeMaxThread1of1ForFork1_thidvar0_2, computeMaxThread1of1ForFork1_thidvar1=v_computeMaxThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[computeMaxThread1of1ForFork1_thidvar0, computeMaxThread1of1ForFork1_thidvar1] 56#[L75, $Ultimate##0, $Ultimate##0]don't care [141] L75-->L60: Formula: (and (= v_sampleThread1of1ForFork2_thidvar0_2 3) (= v_sampleThread1of1ForFork2_thidvar2_2 3) (= v_sampleThread1of1ForFork2_thidvar1_2 3)) InVars {} OutVars{sampleThread1of1ForFork2_thidvar0=v_sampleThread1of1ForFork2_thidvar0_2, sampleThread1of1ForFork2_thidvar2=v_sampleThread1of1ForFork2_thidvar2_2, sampleThread1of1ForFork2_thidvar1=v_sampleThread1of1ForFork2_thidvar1_2} AuxVars[] AssignedVars[sampleThread1of1ForFork2_thidvar0, sampleThread1of1ForFork2_thidvar2, sampleThread1of1ForFork2_thidvar1] 64#[L60, $Ultimate##0, $Ultimate##0, L76]don't care [2023-10-12 17:12:33,115 INFO L750 eck$LassoCheckResult]: Loop: 64#[L60, $Ultimate##0, $Ultimate##0, L76]don't care [147] L60-->L86-1: Formula: (and v_min_lock_22 (not v_min_lock_23)) InVars {min_lock=v_min_lock_23} OutVars{min_lock=v_min_lock_22} AuxVars[] AssignedVars[min_lock] 80#[L76, $Ultimate##0, L86-1, $Ultimate##0]don't care [116] L86-1-->L94: Formula: (= v_min_samples_1 (store v_min_samples_2 (+ (- 1) v_i1_1) v_array_min_3)) InVars {min_samples=v_min_samples_2, i1=v_i1_1, array_min=v_array_min_3} OutVars{min_samples=v_min_samples_1, i1=v_i1_1, array_min=v_array_min_3} AuxVars[] AssignedVars[min_samples] 112#[$Ultimate##0, L76, L94, $Ultimate##0]don't care [144] L94-->L100: Formula: (not v_min_lock_20) InVars {} OutVars{min_lock=v_min_lock_20} AuxVars[] AssignedVars[min_lock] 158#[L76, $Ultimate##0, $Ultimate##0, L100]don't care [119] L100-->L100-1: Formula: (and v_max_lock_11 (not v_max_lock_12)) InVars {max_lock=v_max_lock_12} OutVars{max_lock=v_max_lock_11} AuxVars[] AssignedVars[max_lock] 228#[$Ultimate##0, L76, L100-1, $Ultimate##0]don't care [120] L100-1-->L108: Formula: (= (store v_max_samples_2 (+ (- 1) v_i2_7) v_array_max_6) v_max_samples_1) InVars {i2=v_i2_7, array_max=v_array_max_6, max_samples=v_max_samples_2} OutVars{i2=v_i2_7, array_max=v_array_max_6, max_samples=v_max_samples_1} AuxVars[] AssignedVars[max_samples] 318#[L76, $Ultimate##0, L108, $Ultimate##0]don't care [153] L108-->L60: Formula: (not v_max_lock_47) InVars {} OutVars{max_lock=v_max_lock_47} AuxVars[] AssignedVars[max_lock] 64#[L60, $Ultimate##0, $Ultimate##0, L76]don't care [2023-10-12 17:12:33,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 163945, now seen corresponding path program 1 times [2023-10-12 17:12:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370863277] [2023-10-12 17:12:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:33,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:33,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash 912558154, now seen corresponding path program 1 times [2023-10-12 17:12:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:33,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094846352] [2023-10-12 17:12:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:33,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1208949426, now seen corresponding path program 1 times [2023-10-12 17:12:33,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511515638] [2023-10-12 17:12:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:33,470 INFO L201 PluginConnector]: Adding new model min-max-sample-with_locks.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:12:33 BoogieIcfgContainer [2023-10-12 17:12:33,471 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:12:33,472 INFO L158 Benchmark]: Toolchain (without parser) took 1214.69ms. Allocated memory was 182.5MB in the beginning and 242.2MB in the end (delta: 59.8MB). Free memory was 135.2MB in the beginning and 200.5MB in the end (delta: -65.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:33,473 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.28ms. Allocated memory is still 182.5MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:33,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.05ms. Allocated memory is still 182.5MB. Free memory was 135.0MB in the beginning and 133.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:12:33,475 INFO L158 Benchmark]: Boogie Preprocessor took 29.63ms. Allocated memory is still 182.5MB. Free memory was 133.0MB in the beginning and 131.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:33,476 INFO L158 Benchmark]: RCFGBuilder took 230.68ms. Allocated memory is still 182.5MB. Free memory was 131.9MB in the beginning and 121.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:12:33,477 INFO L158 Benchmark]: BuchiAutomizer took 917.59ms. Allocated memory was 182.5MB in the beginning and 242.2MB in the end (delta: 59.8MB). Free memory was 121.1MB in the beginning and 200.5MB in the end (delta: -79.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:33,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.28ms. Allocated memory is still 182.5MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.05ms. Allocated memory is still 182.5MB. Free memory was 135.0MB in the beginning and 133.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.63ms. Allocated memory is still 182.5MB. Free memory was 133.0MB in the beginning and 131.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 230.68ms. Allocated memory is still 182.5MB. Free memory was 131.9MB in the beginning and 121.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 917.59ms. Allocated memory was 182.5MB in the beginning and 242.2MB in the end (delta: 59.8MB). Free memory was 121.1MB in the beginning and 200.5MB in the end (delta: -79.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 60]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L74] FORK 0 fork 1 computeMin(); [L75] FORK 0 fork 2, 2 computeMax(); [L76] FORK 0 fork 3, 3, 3 sample(); Loop: [L61] CALL call lock_min(); [L87] assume !min_lock; [L88] min_lock := true; [L61] RET call lock_min(); [L62] min_samples[i1 - 1] := array_min; [L63] CALL call release_min(); [L94] min_lock := false; [L63] RET call release_min(); [L65] CALL call lock_max(); [L101] assume !max_lock; [L102] max_lock := true; [L65] RET call lock_max(); [L66] max_samples[i2 - 1] := array_max; [L67] CALL call release_max(); [L108] max_lock := false; [L67] RET call release_max(); End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 60]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L74] FORK 0 fork 1 computeMin(); [L75] FORK 0 fork 2, 2 computeMax(); [L76] FORK 0 fork 3, 3, 3 sample(); Loop: [L61] CALL call lock_min(); [L87] assume !min_lock; [L88] min_lock := true; [L61] RET call lock_min(); [L62] min_samples[i1 - 1] := array_min; [L63] CALL call release_min(); [L94] min_lock := false; [L63] RET call release_min(); [L65] CALL call lock_max(); [L101] assume !max_lock; [L102] max_lock := true; [L65] RET call lock_max(); [L66] max_samples[i2 - 1] := array_max; [L67] CALL call release_max(); [L108] max_lock := false; [L67] RET call release_max(); End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 45 PlacesBefore, 35 PlacesAfterwards, 38 TransitionsBefore, 28 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 1121 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 813, independent: 769, independent conditional: 0, independent unconditional: 769, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 548, independent: 523, independent conditional: 0, independent unconditional: 523, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 548, independent: 518, independent conditional: 0, independent unconditional: 518, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 813, independent: 246, independent conditional: 0, independent unconditional: 246, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 548, unknown conditional: 0, unknown unconditional: 548] , Statistics on independence cache: Total cache size (in pairs): 276, Positive cache size: 257, Positive conditional cache size: 0, Positive unconditional cache size: 257, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be incorrect! [2023-10-12 17:12:33,516 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...