/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 RABIN_PETRI_NET -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:37:48,805 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:37:48,882 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 17:37:48,911 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:37:48,912 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:37:48,913 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:37:48,914 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:37:48,914 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:37:48,915 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:37:48,918 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:37:48,918 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:37:48,919 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:37:48,919 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:37:48,920 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:37:48,921 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:37:48,921 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:37:48,921 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:37:48,921 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:37:48,922 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:37:48,922 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:37:48,922 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:37:48,923 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:37:48,924 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:37:48,924 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:37:48,924 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:37:48,924 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:37:48,925 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:37:48,925 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:37:48,925 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:37:48,925 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:37:48,926 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:37:48,926 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:37:48,927 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:37:48,928 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:37:48,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> RABIN_PETRI_NET [2023-10-12 17:37:49,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:37:49,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:37:49,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:37:49,208 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:37:49,209 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:37:49,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl [2023-10-12 17:37:49,210 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3-opt.wvr.bpl' [2023-10-12 17:37:49,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:37:49,247 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:37:49,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:37:49,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:37:49,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:37:49,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,278 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:37:49,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:37:49,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:37:49,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:37:49,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:37:49,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:37:49,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:37:49,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:37:49,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:37:49,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/1) ... [2023-10-12 17:37:49,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:37:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:37:49,345 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 17:37:49,370 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 17:37:49,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:37:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:37:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:37:49,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:37:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:37:49,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:37:49,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:37:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:37:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:37:49,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:37:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:37:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:37:49,396 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:37:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:37:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:37:49,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2023-10-12 17:37:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-10-12 17:37:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-10-12 17:37:49,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2023-10-12 17:37:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-10-12 17:37:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-10-12 17:37:49,399 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 17:37:49,441 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:37:49,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:37:49,555 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:37:49,574 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:37:49,574 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-10-12 17:37:49,575 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2023-10-12 17:37:49,575 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2023-10-12 17:37:49,575 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2023-10-12 17:37:49,575 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2023-10-12 17:37:49,576 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread5EXIT is neither atomic block end nor error location. [2023-10-12 17:37:49,576 WARN L332 CfgBuilder]: Unexpected successor node of atomic block begin: thread6EXIT is neither atomic block end nor error location. [2023-10-12 17:37:49,578 INFO L201 PluginConnector]: Adding new model exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:37:49 BoogieIcfgContainer [2023-10-12 17:37:49,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:37:49,579 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:37:49,579 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:37:49,582 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:37:49,583 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:37:49,583 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:37:49" (1/2) ... [2023-10-12 17:37:49,584 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70e3806 and model type exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:37:49, skipping insertion in model container [2023-10-12 17:37:49,584 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:37:49,585 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:37:49" (2/2) ... [2023-10-12 17:37:49,586 INFO L332 chiAutomizerObserver]: Analyzing ICFG exp3x3-opt.wvr.bpl [2023-10-12 17:37:49,658 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-10-12 17:37:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 41 transitions, 130 flow [2023-10-12 17:37:49,743 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2023-10-12 17:37:49,743 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-10-12 17:37:49,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 29 events. 6/29 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-10-12 17:37:49,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 41 transitions, 130 flow [2023-10-12 17:37:49,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 29 transitions, 94 flow [2023-10-12 17:37:49,755 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:37:49,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 29 transitions, 94 flow [2023-10-12 17:37:49,769 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 29 transitions, 94 flow [2023-10-12 17:37:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 29 transitions, 94 flow [2023-10-12 17:37:49,778 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2023-10-12 17:37:49,778 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-10-12 17:37:49,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 29 events. 6/29 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-10-12 17:37:49,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-10-12 17:37:49,893 INFO L134 LiptonReduction]: Checked pairs total: 270 [2023-10-12 17:37:49,894 INFO L136 LiptonReduction]: Total number of compositions: 3 [2023-10-12 17:37:49,904 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:37:49,905 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:37:49,905 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:37:49,905 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:37:49,905 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:37:49,905 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:37:49,905 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:37:49,905 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == RabinPetriNetCegarLoop ======== [2023-10-12 17:37:49,906 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 40 places, 27 transitions, 90 flow [2023-10-12 17:37:49,909 ERROR L47 etriNetUnfolderRabin]: [1:1A:[86] $Ultimate##0-->L87: Formula: (and (= v_x4_1 v_x3_1) (= v_x6_1 v_x5_1) (= v_x2_4 v_x1_4)) InVars {x6=v_x6_1, x4=v_x4_1, x5=v_x5_1, x2=v_x2_4, x3=v_x3_1, x1=v_x1_4} OutVars{x6=v_x6_1, x4=v_x4_1, x5=v_x5_1, x2=v_x2_4, x3=v_x3_1, x1=v_x1_4} AuxVars[] AssignedVars[][23], 2:2A:[111] L87-->L21: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0][17]][3:3A:[89] L21-->L21: Formula: (and (< v_x1_7 v_n_16) (= v_x1_6 (* v_x1_7 2))) InVars {x1=v_x1_7, n=v_n_16} OutVars{x1=v_x1_6, n=v_n_16} AuxVars[] AssignedVars[x1][13]] [2023-10-12 17:37:49,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:37:49,914 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:37:49,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:37:49,914 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:37:49,917 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:37:49,918 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 40 places, 27 transitions, 90 flow [2023-10-12 17:37:49,921 ERROR L47 etriNetUnfolderRabin]: [1:1A:[86] $Ultimate##0-->L87: Formula: (and (= v_x4_1 v_x3_1) (= v_x6_1 v_x5_1) (= v_x2_4 v_x1_4)) InVars {x6=v_x6_1, x4=v_x4_1, x5=v_x5_1, x2=v_x2_4, x3=v_x3_1, x1=v_x1_4} OutVars{x6=v_x6_1, x4=v_x4_1, x5=v_x5_1, x2=v_x2_4, x3=v_x3_1, x1=v_x1_4} AuxVars[] AssignedVars[][23], 2:2A:[111] L87-->L21: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0][17]][3:3A:[89] L21-->L21: Formula: (and (< v_x1_7 v_n_16) (= v_x1_6 (* v_x1_7 2))) InVars {x1=v_x1_7, n=v_n_16} OutVars{x1=v_x1_6, n=v_n_16} AuxVars[] AssignedVars[x1][13]] [2023-10-12 17:37:49,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:37:49,921 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:37:49,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:37:49,921 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:37:49,926 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]true [86] $Ultimate##0-->L87: Formula: (and (= v_x4_1 v_x3_1) (= v_x6_1 v_x5_1) (= v_x2_4 v_x1_4)) InVars {x6=v_x6_1, x4=v_x4_1, x5=v_x5_1, x2=v_x2_4, x3=v_x3_1, x1=v_x1_4} OutVars{x6=v_x6_1, x4=v_x4_1, x5=v_x5_1, x2=v_x2_4, x3=v_x3_1, x1=v_x1_4} AuxVars[] AssignedVars[] 54#[L87]true [111] L87-->L21: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0] 56#[L21, L87-1]true [2023-10-12 17:37:49,926 INFO L750 eck$LassoCheckResult]: Loop: 56#[L21, L87-1]true [89] L21-->L21: Formula: (and (< v_x1_7 v_n_16) (= v_x1_6 (* v_x1_7 2))) InVars {x1=v_x1_7, n=v_n_16} OutVars{x1=v_x1_6, n=v_n_16} AuxVars[] AssignedVars[x1] 56#[L21, L87-1]true [2023-10-12 17:37:49,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:37:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash 3738, now seen corresponding path program 1 times [2023-10-12 17:37:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:37:49,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081708678] [2023-10-12 17:37:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:37:49,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:37:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:37:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:37:50,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:37:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 120, now seen corresponding path program 1 times [2023-10-12 17:37:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:37:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932057405] [2023-10-12 17:37:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:37:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:37:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:37:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:37:50,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:37:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash 115967, now seen corresponding path program 1 times [2023-10-12 17:37:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:37:50,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779205260] [2023-10-12 17:37:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:37:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:37:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:37:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:37:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:37:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:37:50,223 INFO L201 PluginConnector]: Adding new model exp3x3-opt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:37:50 BoogieIcfgContainer [2023-10-12 17:37:50,223 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:37:50,226 INFO L158 Benchmark]: Toolchain (without parser) took 977.06ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 124.4MB in the end (delta: 6.0MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2023-10-12 17:37:50,227 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.29ms. Allocated memory is still 176.2MB. Free memory is still 131.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:37:50,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.42ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 128.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:37:50,229 INFO L158 Benchmark]: Boogie Preprocessor took 33.35ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 127.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:37:50,230 INFO L158 Benchmark]: RCFGBuilder took 262.90ms. Allocated memory is still 176.2MB. Free memory was 127.8MB in the beginning and 116.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:37:50,231 INFO L158 Benchmark]: BuchiAutomizer took 644.77ms. Allocated memory is still 176.2MB. Free memory was 116.4MB in the beginning and 124.4MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:37:50,235 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 0.29ms. Allocated memory is still 176.2MB. Free memory is still 131.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.42ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 128.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.35ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 127.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 262.90ms. Allocated memory is still 176.2MB. Free memory was 127.8MB in the beginning and 116.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 644.77ms. Allocated memory is still 176.2MB. Free memory was 116.4MB in the beginning and 124.4MB in the end (delta: -8.0MB). 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 0.5s and 1 iterations. TraceHistogramMax:0. Analysis of lassos took 0.2s. 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: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L86] 0 assume x1 == x2 && x3 == x4 && x5 == x6; VAL [x1=0, x2=0, x3=2, x4=2, x5=3, x6=3] [L87] FORK 0 fork 1 thread1(); VAL [x1=0, x2=0, x3=2, x4=2, x5=3, x6=3] Loop: [L22] assume x1 < n; [L23] x1 := x1 + x1; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L86] 0 assume x1 == x2 && x3 == x4 && x5 == x6; VAL [x1=0, x2=0, x3=2, x4=2, x5=3, x6=3] [L87] FORK 0 fork 1 thread1(); VAL [x1=0, x2=0, x3=2, x4=2, x5=3, x6=3] Loop: [L22] assume x1 < n; [L23] x1 := x1 + x1; End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 42 PlacesBefore, 40 PlacesAfterwards, 29 TransitionsBefore, 27 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 270 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 270, independent: 270, independent conditional: 0, independent unconditional: 270, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 90, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 90, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 270, independent: 180, independent conditional: 0, independent unconditional: 180, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 90, unknown conditional: 0, unknown unconditional: 90] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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 17:37:50,263 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...