/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-?-9ecb849-m [2024-02-09 23:24:57,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 23:24:57,380 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2024-02-09 23:24:57,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 23:24:57,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 23:24:57,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.Only consider context switches at boundaries of atomic blocks [2024-02-09 23:24:57,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 23:24:57,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 23:24:57,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 23:24:57,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 23:24:57,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 23:24:57,452 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 23:24:57,453 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 23:24:57,454 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 23:24:57,454 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 23:24:57,454 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 23:24:57,455 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 23:24:57,455 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 23:24:57,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 23:24:57,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 23:24:57,456 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-09 23:24:57,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 23:24:57,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-09 23:24:57,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 23:24:57,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 23:24:57,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 23:24:57,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 23:24:57,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 23:24:57,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-09 23:24:57,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 23:24:57,459 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 23:24:57,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 23:24:57,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 23:24:57,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 23:24:57,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 23:24:57,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 23:24:57,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-09 23:24:57,461 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 23:24:57,461 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2024-02-09 23:24:57,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 23:24:57,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 23:24:57,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 23:24:57,801 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2024-02-09 23:24:57,802 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2024-02-09 23:24:57,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl [2024-02-09 23:24:57,804 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/motivating.bpl' [2024-02-09 23:24:57,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 23:24:57,842 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-02-09 23:24:57,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 23:24:57,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 23:24:57,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 23:24:57,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,890 INFO L138 Inliner]: procedures = 4, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-02-09 23:24:57,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 23:24:57,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 23:24:57,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 23:24:57,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 23:24:57,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 23:24:57,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 23:24:57,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 23:24:57,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 23:24:57,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/1) ... [2024-02-09 23:24:57,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:24:57,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:24:57,978 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) [2024-02-09 23:24:58,005 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 [2024-02-09 23:24:58,032 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2024-02-09 23:24:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-09 23:24:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-09 23:24:58,032 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2024-02-09 23:24:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-09 23:24:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-09 23:24:58,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2024-02-09 23:24:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-09 23:24:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-09 23:24:58,034 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2024-02-09 23:24:58,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 23:24:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 23:24:58,034 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-09 23:24:58,083 INFO L236 CfgBuilder]: Building ICFG [2024-02-09 23:24:58,085 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 23:24:58,221 INFO L277 CfgBuilder]: Performing block encoding [2024-02-09 23:24:58,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 23:24:58,229 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-09 23:24:58,231 INFO L201 PluginConnector]: Adding new model motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:24:58 BoogieIcfgContainer [2024-02-09 23:24:58,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 23:24:58,232 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 23:24:58,232 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 23:24:58,235 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 23:24:58,236 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:24:58,236 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "motivating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:57" (1/2) ... [2024-02-09 23:24:58,238 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d5c2621 and model type motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 11:24:58, skipping insertion in model container [2024-02-09 23:24:58,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:24:58,238 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:24:58" (2/2) ... [2024-02-09 23:24:58,239 INFO L332 chiAutomizerObserver]: Analyzing ICFG motivating.bpl [2024-02-09 23:24:58,317 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-02-09 23:24:58,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 63 transitions, 168 flow [2024-02-09 23:24:58,371 INFO L124 PetriNetUnfolderBase]: 12/51 cut-off events. [2024-02-09 23:24:58,371 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-09 23:24:58,377 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. [2024-02-09 23:24:58,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 63 transitions, 168 flow [2024-02-09 23:24:58,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 51 transitions, 138 flow [2024-02-09 23:24:58,394 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 23:24:58,394 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 23:24:58,394 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 23:24:58,395 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 23:24:58,395 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 23:24:58,395 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 23:24:58,395 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 23:24:58,395 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-02-09 23:24:58,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2024-02-09 23:25:00,499 INFO L131 ngComponentsAnalysis]: Automaton has 393 accepting balls. 13275 [2024-02-09 23:25:00,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 23:25:00,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 23:25:00,504 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-02-09 23:25:00,504 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 23:25:00,504 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 23:25:00,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 13310 states, but on-demand construction may add more states [2024-02-09 23:25:01,122 INFO L131 ngComponentsAnalysis]: Automaton has 393 accepting balls. 13275 [2024-02-09 23:25:01,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 23:25:01,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 23:25:01,123 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-02-09 23:25:01,124 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 23:25:01,128 INFO L748 eck$LassoCheckResult]: Stem: 67#[$Ultimate##0]don't care [89] $Ultimate##0-->L19: Formula: (and (<= 0 v_ULTIMATE.start_m_1) (< v_ULTIMATE.start_m_1 v_N_7)) InVars {ULTIMATE.start_m=v_ULTIMATE.start_m_1, N=v_N_7} OutVars{ULTIMATE.start_m=v_ULTIMATE.start_m_1, N=v_N_7} AuxVars[] AssignedVars[] 70#[L19]don't care [92] L19-->L21: Formula: (= v_i_5 0) InVars {} OutVars{i=v_i_5} AuxVars[] AssignedVars[i] 72#[L21]don't care [133] L21-->L43-2: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0] 74#[L21-1, L43-2]don't care [2024-02-09 23:25:01,129 INFO L750 eck$LassoCheckResult]: Loop: 74#[L21-1, L43-2]don't care [95] L43-2-->L43: Formula: true InVars {} OutVars{i=v_i_1} AuxVars[] AssignedVars[i] 80#[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[] 74#[L21-1, L43-2]don't care [2024-02-09 23:25:01,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:25:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 118305, now seen corresponding path program 1 times [2024-02-09 23:25:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:25:01,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798201982] [2024-02-09 23:25:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:25:01,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:25:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:25:01,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:25:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:25:01,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:25:01,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:25:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash 4003, now seen corresponding path program 1 times [2024-02-09 23:25:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:25:01,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024383480] [2024-02-09 23:25:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:25:01,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:25:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:25:01,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:25:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:25:01,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:25:01,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:25:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash 113694147, now seen corresponding path program 1 times [2024-02-09 23:25:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:25:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653270342] [2024-02-09 23:25:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:25:01,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:25:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:25:01,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:25:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:25:01,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:25:01,347 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 23:25:01,348 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 23:25:01,348 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 23:25:01,348 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 23:25:01,348 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 23:25:01,348 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:25:01,348 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 23:25:01,348 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 23:25:01,349 INFO L133 ssoRankerPreferences]: Filename of dumped script: motivating.bpl_BEv2_Iteration1_Lasso [2024-02-09 23:25:01,349 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 23:25:01,349 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 23:25:01,365 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 23:25:01,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 23:25:01,436 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 23:25:01,436 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 23:25:01,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:25:01,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:25:01,441 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) [2024-02-09 23:25:01,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 23:25:01,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 23:25:01,455 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 [2024-02-09 23:25:01,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2024-02-09 23:25:01,462 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-02-09 23:25:01,466 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 [2024-02-09 23:25:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:25:01,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:25:01,472 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) [2024-02-09 23:25:01,476 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 [2024-02-09 23:25:01,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 23:25:01,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 23:25:01,501 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 [2024-02-09 23:25:01,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:25:01,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:25:01,503 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) [2024-02-09 23:25:01,506 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 [2024-02-09 23:25:01,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 23:25:01,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 23:25:01,546 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2024-02-09 23:25:01,547 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {N=2, ULTIMATE.start_m=0, i=0} Honda state: {N=2, ULTIMATE.start_m=0, i=0} Generalized eigenvectors: [{N=-4, ULTIMATE.start_m=2, i=-7}, {N=-2, ULTIMATE.start_m=1, i=-1}, {N=6, ULTIMATE.start_m=-3, i=-5}] Lambdas: [1, 4, 1] Nus: [0, 1] [2024-02-09 23:25:01,552 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 [2024-02-09 23:25:01,570 INFO L201 PluginConnector]: Adding new model motivating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.02 11:25:01 BoogieIcfgContainer [2024-02-09 23:25:01,571 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-09 23:25:01,573 INFO L158 Benchmark]: Toolchain (without parser) took 3729.48ms. Allocated memory was 164.6MB in the beginning and 575.7MB in the end (delta: 411.0MB). Free memory was 122.8MB in the beginning and 334.5MB in the end (delta: -211.7MB). Peak memory consumption was 198.9MB. Max. memory is 8.0GB. [2024-02-09 23:25:01,573 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 164.6MB. Free memory was 124.0MB in the beginning and 124.0MB in the end (delta: 65.8kB). There was no memory consumed. Max. memory is 8.0GB. [2024-02-09 23:25:01,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.14ms. Allocated memory is still 164.6MB. Free memory was 122.8MB in the beginning and 134.4MB in the end (delta: -11.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-02-09 23:25:01,574 INFO L158 Benchmark]: Boogie Preprocessor took 42.81ms. Allocated memory is still 164.6MB. Free memory was 134.1MB in the beginning and 140.1MB in the end (delta: -6.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-02-09 23:25:01,575 INFO L158 Benchmark]: RCFGBuilder took 294.53ms. Allocated memory is still 164.6MB. Free memory was 140.0MB in the beginning and 129.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2024-02-09 23:25:01,575 INFO L158 Benchmark]: BuchiAutomizer took 3338.88ms. Allocated memory was 164.6MB in the beginning and 575.7MB in the end (delta: 411.0MB). Free memory was 129.2MB in the beginning and 334.5MB in the end (delta: -205.3MB). Peak memory consumption was 206.7MB. Max. memory is 8.0GB. [2024-02-09 23:25:01,578 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 0.12ms. Allocated memory is still 164.6MB. Free memory was 124.0MB in the beginning and 124.0MB in the end (delta: 65.8kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.14ms. Allocated memory is still 164.6MB. Free memory was 122.8MB in the beginning and 134.4MB in the end (delta: -11.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.81ms. Allocated memory is still 164.6MB. Free memory was 134.1MB in the beginning and 140.1MB in the end (delta: -6.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 294.53ms. Allocated memory is still 164.6MB. Free memory was 140.0MB in the beginning and 129.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 3338.88ms. Allocated memory was 164.6MB in the beginning and 575.7MB in the end (delta: 411.0MB). Free memory was 129.2MB in the beginning and 334.5MB in the end (delta: -205.3MB). Peak memory consumption was 206.7MB. 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 3.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: inital24 mio100 ax100 hnf100 lsp87 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq119 hnf95 smp100 dnf100 smp100 tf100 neg100 sie116 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - 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. 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. RESULT: Ultimate proved your program to be incorrect! [2024-02-09 23:25:01,603 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...