/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/motivating.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:12:37,402 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:12:37,483 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 17:12:37,514 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:12:37,515 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:12:37,515 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:12:37,517 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:12:37,518 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:12:37,518 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:12:37,522 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:12:37,522 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:12:37,522 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:12:37,522 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:12:37,524 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:12:37,524 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:12:37,525 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:12:37,525 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:12:37,525 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:12:37,525 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:12:37,525 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:12:37,526 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:12:37,526 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:12:37,526 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:12:37,526 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:12:37,527 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:12:37,527 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:12:37,527 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:12:37,527 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:12:37,527 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:12:37,528 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:12:37,529 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:12:37,529 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:12:37,529 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:12:37,530 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:12:37,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:12:37,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:12:37,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:12:37,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:12:37,773 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:12:37,774 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:12:37,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl [2023-10-12 17:12:37,775 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl' [2023-10-12 17:12:37,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:12:37,799 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:12:37,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:37,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:12:37,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:12:37,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,834 INFO L138 Inliner]: procedures = 4, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:12:37,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:37,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:12:37,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:12:37,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:12:37,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:12:37,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:12:37,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:12:37,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:12:37,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/1) ... [2023-10-12 17:12:37,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:37,894 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 17:12:37,896 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 17:12:37,919 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:12:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:12:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:12:37,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:12:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:12:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:12:37,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:12:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:12:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:12:37,921 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:12:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:12:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:12:37,922 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 17:12:37,964 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:12:37,966 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:12:38,074 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:12:38,080 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:12:38,081 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-10-12 17:12:38,082 INFO L201 PluginConnector]: Adding new model motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:38 BoogieIcfgContainer [2023-10-12 17:12:38,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:12:38,084 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:12:38,084 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:12:38,087 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:12:38,087 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:38,088 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:37" (1/2) ... [2023-10-12 17:12:38,089 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20d5878 and model type motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:12:38, skipping insertion in model container [2023-10-12 17:12:38,089 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:38,089 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:38" (2/2) ... [2023-10-12 17:12:38,090 INFO L332 chiAutomizerObserver]: Analyzing ICFG motivating.bpl [2023-10-12 17:12:38,188 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-10-12 17:12:38,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 63 transitions, 174 flow [2023-10-12 17:12:38,242 INFO L124 PetriNetUnfolderBase]: 12/51 cut-off events. [2023-10-12 17:12:38,243 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-10-12 17:12:38,249 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 80 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. [2023-10-12 17:12:38,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 63 transitions, 174 flow [2023-10-12 17:12:38,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 51 transitions, 138 flow [2023-10-12 17:12:38,259 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:12:38,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 51 transitions, 138 flow [2023-10-12 17:12:38,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 51 transitions, 138 flow [2023-10-12 17:12:38,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 138 flow [2023-10-12 17:12:38,288 INFO L124 PetriNetUnfolderBase]: 12/51 cut-off events. [2023-10-12 17:12:38,288 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-10-12 17:12:38,289 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 80 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. [2023-10-12 17:12:38,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 1290 [2023-10-12 17:12:38,723 INFO L134 LiptonReduction]: Checked pairs total: 3007 [2023-10-12 17:12:38,723 INFO L136 LiptonReduction]: Total number of compositions: 14 [2023-10-12 17:12:38,742 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:12:38,742 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:12:38,742 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:12:38,743 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:12:38,743 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:12:38,743 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:12:38,743 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:12:38,743 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:12:38,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:12:39,309 INFO L131 ngComponentsAnalysis]: Automaton has 249 accepting balls. 3139 [2023-10-12 17:12:39,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:39,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:39,317 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:39,318 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:12:39,319 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:12:39,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 3160 states, but on-demand construction may add more states [2023-10-12 17:12:39,410 INFO L131 ngComponentsAnalysis]: Automaton has 249 accepting balls. 3139 [2023-10-12 17:12:39,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:39,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:39,411 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:39,411 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:12:39,416 INFO L748 eck$LassoCheckResult]: Stem: 67#[$Ultimate##0]don't care [159] $Ultimate##0-->L21: Formula: (and (= v_i_47 0) (< v_ULTIMATE.start_m_6 v_N_32) (<= 0 v_ULTIMATE.start_m_6)) InVars {ULTIMATE.start_m=v_ULTIMATE.start_m_6, N=v_N_32} OutVars{ULTIMATE.start_m=v_ULTIMATE.start_m_6, N=v_N_32, i=v_i_47} AuxVars[] AssignedVars[i] 70#[L21]don't care [133] L21-->L43-2: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0] 72#[L43-2, L21-1]don't care [2023-10-12 17:12:39,417 INFO L750 eck$LassoCheckResult]: Loop: 72#[L43-2, L21-1]don't care [95] L43-2-->L43: Formula: true InVars {} OutVars{i=v_i_1} AuxVars[] AssignedVars[i] 78#[L21-1, L43]don't care [97] L43-->L43-2: Formula: (or (<= v_N_2 v_i_4) (< v_i_4 0)) 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]don't care [2023-10-12 17:12:39,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:39,426 INFO L85 PathProgramCache]: Analyzing trace with hash 6023, now seen corresponding path program 1 times [2023-10-12 17:12:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495798339] [2023-10-12 17:12:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:39,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:39,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:39,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash 4003, now seen corresponding path program 1 times [2023-10-12 17:12:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:39,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865079036] [2023-10-12 17:12:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:39,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:39,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:39,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash 5791145, now seen corresponding path program 1 times [2023-10-12 17:12:39,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634169379] [2023-10-12 17:12:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:39,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:39,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:39,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:39,720 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:39,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:39,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:39,721 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:39,721 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:39,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:39,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:39,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:39,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: motivating.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:12:39,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:39,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:39,735 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:39,757 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:39,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:39,800 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:39,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:39,809 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) [2023-10-12 17:12:39,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:39,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:39,815 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 [2023-10-12 17:12:39,849 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 [2023-10-12 17:12:39,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:39,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:39,851 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) [2023-10-12 17:12:39,863 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 [2023-10-12 17:12:39,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:39,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:39,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:12:39,906 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_m=0, N=2, i=0} Honda state: {ULTIMATE.start_m=0, N=2, i=0} Generalized eigenvectors: [{ULTIMATE.start_m=2, N=-4, i=-7}, {ULTIMATE.start_m=1, N=-2, i=-1}, {ULTIMATE.start_m=-3, N=6, i=-5}] Lambdas: [1, 4, 1] Nus: [0, 1] [2023-10-12 17:12:39,913 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 [2023-10-12 17:12:39,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:39,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:39,915 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) [2023-10-12 17:12:39,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:39,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:39,934 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 [2023-10-12 17:12:39,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:12:39,941 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:12:39,947 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 [2023-10-12 17:12:39,955 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] [2023-10-12 17:12:39,956 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] [2023-10-12 17:12:39,956 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier3,QUANTIFIED] [2023-10-12 17:12:39,975 INFO L201 PluginConnector]: Adding new model motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:12:39 BoogieIcfgContainer [2023-10-12 17:12:39,975 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:12:39,976 INFO L158 Benchmark]: Toolchain (without parser) took 2176.97ms. Allocated memory was 178.3MB in the beginning and 256.9MB in the end (delta: 78.6MB). Free memory was 131.9MB in the beginning and 201.4MB in the end (delta: -69.4MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2023-10-12 17:12:39,976 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 178.3MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:39,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.94ms. Allocated memory is still 178.3MB. Free memory was 131.9MB in the beginning and 130.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:39,977 INFO L158 Benchmark]: Boogie Preprocessor took 17.51ms. Allocated memory is still 178.3MB. Free memory was 130.3MB in the beginning and 129.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:39,978 INFO L158 Benchmark]: RCFGBuilder took 227.60ms. Allocated memory is still 178.3MB. Free memory was 129.3MB in the beginning and 119.2MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:12:39,978 INFO L158 Benchmark]: BuchiAutomizer took 1891.43ms. Allocated memory was 178.3MB in the beginning and 256.9MB in the end (delta: 78.6MB). Free memory was 119.1MB in the beginning and 201.4MB in the end (delta: -82.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:39,980 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 0.19ms. Allocated memory is still 178.3MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.94ms. Allocated memory is still 178.3MB. Free memory was 131.9MB in the beginning and 130.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 17.51ms. Allocated memory is still 178.3MB. Free memory was 130.3MB in the beginning and 129.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.60ms. Allocated memory is still 178.3MB. Free memory was 129.3MB in the beginning and 119.2MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1891.43ms. Allocated memory was 178.3MB in the beginning and 256.9MB in the end (delta: 78.6MB). Free memory was 119.1MB in the beginning and 201.4MB in the end (delta: -82.3MB). There was no memory consumed. 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 1.7s and 1 iterations. TraceHistogramMax:1. 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: inital20 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq123 hnf95 smp100 dnf100 smp100 tf100 neg100 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. [2023-10-12 17:12:39,987 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier4,QUANTIFIED] [2023-10-12 17:12:39,987 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier5,QUANTIFIED] [2023-10-12 17:12:39,988 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier6,QUANTIFIED] [2023-10-12 17:12:39,988 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier7,QUANTIFIED] [2023-10-12 17:12:39,988 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier8,QUANTIFIED] [2023-10-12 17:12:39,988 WARN L421 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=2, i=0, m=0, freshIdentifier7=0} State at position 1 is {N=2, i=0, m=0, freshIdentifier8=1} For i>1, the state at position i is {N=2 + sum_{k=0}^i -4 + -2*4^k + 6 + 6*k*4^(k-1), i=0 + sum_{k=0}^i -7 + -1*4^k + -5 + -5*k*4^(k-1), m=0 + sum_{k=0}^i 2 + 1*4^k + -3 + -3*k*4^(k-1), freshIdentifier9=1 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 3GEVs Lambdas: [1, 4, 1] 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: 0.4s, 58 PlacesBefore, 49 PlacesAfterwards, 51 TransitionsBefore, 40 TransitionsAfterwards, 1290 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 14 TotalNumberOfCompositions, 3007 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1576, independent: 1502, independent conditional: 0, independent unconditional: 1502, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 705, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 705, independent: 673, independent conditional: 0, independent unconditional: 673, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 104, independent: 49, independent conditional: 0, independent unconditional: 49, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1576, independent: 817, independent conditional: 0, independent unconditional: 817, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 705, unknown conditional: 0, unknown unconditional: 705] , Statistics on independence cache: Total cache size (in pairs): 329, Positive cache size: 311, Positive conditional cache size: 0, Positive unconditional cache size: 311, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, 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 17:12:40,004 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...