/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/POPL2023/count0-countEven-sample-abs.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.omega-petrinet-638c691-m [2022-09-29 14:59:58,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 14:59:58,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 14:59:58,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 14:59:58,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 14:59:58,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 14:59:58,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 14:59:58,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 14:59:58,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 14:59:58,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 14:59:58,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 14:59:58,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 14:59:58,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 14:59:58,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 14:59:58,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 14:59:58,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 14:59:58,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 14:59:58,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 14:59:58,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 14:59:58,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 14:59:58,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 14:59:58,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 14:59:58,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 14:59:58,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 14:59:58,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-29 14:59:58,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-29 14:59:58,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-29 14:59:58,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-29 14:59:58,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-29 14:59:58,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-29 14:59:58,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-29 14:59:58,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-29 14:59:58,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-29 14:59:58,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-29 14:59:58,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-29 14:59:58,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-29 14:59:58,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-29 14:59:58,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-29 14:59:58,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 14:59:58,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 14:59:58,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 14:59:58,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf [2022-09-29 14:59:58,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 14:59:58,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 14:59:58,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 14:59:58,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 14:59:58,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 14:59:58,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 14:59:58,416 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 14:59:58,416 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-09-29 14:59:58,416 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-09-29 14:59:58,416 INFO L138 SettingsManager]: * Use old map elimination=false [2022-09-29 14:59:58,416 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-09-29 14:59:58,416 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-09-29 14:59:58,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 14:59:58,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 14:59:58,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-09-29 14:59:58,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 14:59:58,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 14:59:58,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 14:59:58,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 14:59:58,420 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-09-29 14:59:58,420 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 14:59:58,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 14:59:58,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 14:59:58,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 14:59:58,687 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 14:59:58,690 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 14:59:58,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/count0-countEven-sample-abs.bpl [2022-09-29 14:59:58,691 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/count0-countEven-sample-abs.bpl' [2022-09-29 14:59:58,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 14:59:58,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-29 14:59:58,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-29 14:59:58,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-29 14:59:58,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-29 14:59:58,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,753 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-29 14:59:58,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-29 14:59:58,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 14:59:58,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 14:59:58,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 14:59:58,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 14:59:58,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 14:59:58,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 14:59:58,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 14:59:58,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/1) ... [2022-09-29 14:59:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:59:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:59:58,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-09-29 14:59:58,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-09-29 14:59:58,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure countEven given in one single declaration [2022-09-29 14:59:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure countEven [2022-09-29 14:59:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure countEven [2022-09-29 14:59:58,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure countZero given in one single declaration [2022-09-29 14:59:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure countZero [2022-09-29 14:59:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure countZero [2022-09-29 14:59:58,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-29 14:59:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 14:59:58,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 14:59:58,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure sample given in one single declaration [2022-09-29 14:59:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure sample [2022-09-29 14:59:58,866 INFO L138 BoogieDeclarations]: Found implementation of procedure sample [2022-09-29 14:59:58,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mapAbs given in one single declaration [2022-09-29 14:59:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure mapAbs [2022-09-29 14:59:58,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mapAbs [2022-09-29 14:59:58,868 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 14:59:58,920 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 14:59:58,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 14:59:59,019 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 14:59:59,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 14:59:59,025 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-29 14:59:59,027 INFO L202 PluginConnector]: Adding new model count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 02:59:59 BoogieIcfgContainer [2022-09-29 14:59:59,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 14:59:59,028 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-09-29 14:59:59,028 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-09-29 14:59:59,031 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-09-29 14:59:59,031 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 14:59:59,032 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:59:58" (1/2) ... [2022-09-29 14:59:59,033 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@dd11c5e and model type count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.09 02:59:59, skipping insertion in model container [2022-09-29 14:59:59,033 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 14:59:59,033 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "count0-countEven-sample-abs.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 02:59:59" (2/2) ... [2022-09-29 14:59:59,034 INFO L322 chiAutomizerObserver]: Analyzing ICFG count0-countEven-sample-abs.bpl [2022-09-29 14:59:59,131 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-29 14:59:59,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 112 flow [2022-09-29 14:59:59,179 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 14:59:59,180 INFO L123 PetriNetUnfolderBase]: 5/35 cut-off events. [2022-09-29 14:59:59,180 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 14:59:59,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-09-29 14:59:59,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 112 flow [2022-09-29 14:59:59,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 35 transitions, 88 flow [2022-09-29 14:59:59,192 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-09-29 14:59:59,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 35 transitions, 88 flow [2022-09-29 14:59:59,206 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 35 transitions, 88 flow [2022-09-29 14:59:59,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 35 transitions, 88 flow [2022-09-29 14:59:59,215 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 14:59:59,216 INFO L123 PetriNetUnfolderBase]: 5/35 cut-off events. [2022-09-29 14:59:59,216 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 14:59:59,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-09-29 14:59:59,217 INFO L116 LiptonReduction]: Number of co-enabled transitions 666 [2022-09-29 14:59:59,636 INFO L131 LiptonReduction]: Checked pairs total: 531 [2022-09-29 14:59:59,636 INFO L133 LiptonReduction]: Total number of compositions: 21 [2022-09-29 14:59:59,653 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-09-29 14:59:59,653 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-09-29 14:59:59,653 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-09-29 14:59:59,653 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-09-29 14:59:59,653 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-09-29 14:59:59,653 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-09-29 14:59:59,653 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-09-29 14:59:59,654 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-09-29 14:59:59,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-09-29 14:59:59,735 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 70 [2022-09-29 14:59:59,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 14:59:59,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 14:59:59,741 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-09-29 14:59:59,741 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-09-29 14:59:59,741 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-09-29 14:59:59,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 120 states, but on-demand construction may add more states [2022-09-29 14:59:59,754 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 70 [2022-09-29 14:59:59,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 14:59:59,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 14:59:59,755 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-09-29 14:59:59,755 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-09-29 14:59:59,759 INFO L733 eck$LassoCheckResult]: Stem: 50#[ULTIMATE.startENTRY]don't care [118] ULTIMATE.startENTRY-->countZeroENTRY: Formula: (= v_countZeroThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{countZeroThread1of1ForFork0_thidvar0=v_countZeroThread1of1ForFork0_thidvar0_2, countZeroThread1of1ForFork0_i1=v_countZeroThread1of1ForFork0_i1_16} AuxVars[] AssignedVars[countZeroThread1of1ForFork0_thidvar0, countZeroThread1of1ForFork0_i1] 53#[countZeroENTRY, L76]don't care [139] countZeroENTRY-->L32-1: Formula: (and (= v_cntZero_18 0) (= v_countZeroThread1of1ForFork0_i1_29 0)) InVars {} OutVars{cntZero=v_cntZero_18, countZeroThread1of1ForFork0_i1=v_countZeroThread1of1ForFork0_i1_29} AuxVars[] AssignedVars[cntZero, countZeroThread1of1ForFork0_i1] 57#[L76, L32-1]don't care [2022-09-29 14:59:59,760 INFO L735 eck$LassoCheckResult]: Loop: 57#[L76, L32-1]don't care [150] L32-1-->L32-1: Formula: (let ((.cse0 (= v_countZeroThread1of1ForFork0_i1_Out_2 (+ v_countZeroThread1of1ForFork0_i1_In_1 1))) (.cse2 (= (select v_A_In_3 v_countZeroThread1of1ForFork0_i1_In_1) 0)) (.cse1 (< v_countZeroThread1of1ForFork0_i1_In_1 v_N_In_3))) (or (and .cse0 .cse1 (= v_cntZero_In_1 v_cntZero_Out_2) (not .cse2)) (and (= (+ v_cntZero_In_1 1) v_cntZero_Out_2) .cse0 .cse2 .cse1))) InVars {A=v_A_In_3, N=v_N_In_3, countZeroThread1of1ForFork0_i1=v_countZeroThread1of1ForFork0_i1_In_1, cntZero=v_cntZero_In_1} OutVars{A=v_A_In_3, N=v_N_In_3, countZeroThread1of1ForFork0_i1=v_countZeroThread1of1ForFork0_i1_Out_2, cntZero=v_cntZero_Out_2} AuxVars[] AssignedVars[cntZero, countZeroThread1of1ForFork0_i1] 57#[L76, L32-1]don't care [2022-09-29 14:59:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:59:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash 4758, now seen corresponding path program 1 times [2022-09-29 14:59:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:59:59,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096601284] [2022-09-29 14:59:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:59:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:59:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:59:59,839 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:59:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:59:59,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:59:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:59:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash 181, now seen corresponding path program 1 times [2022-09-29 14:59:59,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:59:59,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395411451] [2022-09-29 14:59:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:59:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:59:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:59:59,871 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:59:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:59:59,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:59:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:59:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 147648, now seen corresponding path program 1 times [2022-09-29 14:59:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:59:59,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591188468] [2022-09-29 14:59:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:59:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:59:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:59:59,888 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:59:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:59:59,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:00,079 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:00:00,080 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:00:00,080 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:00:00,080 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:00:00,080 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-09-29 15:00:00,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:00,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:00:00,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:00:00,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: count0-countEven-sample-abs.bpl_BEv2_Iteration1_Lasso [2022-09-29 15:00:00,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:00:00,081 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:00:00,102 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:00:00,115 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:00:00,259 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 15:00:00,263 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-09-29 15:00:00,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:00,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-09-29 15:00:00,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-09-29 15:00:00,279 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-09-29 15:00:00,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-09-29 15:00:00,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-09-29 15:00:00,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-09-29 15:00:00,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-09-29 15:00:00,296 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-09-29 15:00:00,296 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-09-29 15:00:00,308 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-09-29 15:00:00,323 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 [2022-09-29 15:00:00,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:00,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:00,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-09-29 15:00:00,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-09-29 15:00:00,327 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-09-29 15:00:00,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-09-29 15:00:00,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-09-29 15:00:00,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-09-29 15:00:00,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-09-29 15:00:00,341 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-09-29 15:00:00,342 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-09-29 15:00:00,367 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-09-29 15:00:00,384 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-09-29 15:00:00,384 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2022-09-29 15:00:00,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 15:00:00,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-09-29 15:00:00,405 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-09-29 15:00:00,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-09-29 15:00:00,428 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-09-29 15:00:00,428 INFO L513 LassoAnalysis]: Proved termination. [2022-09-29 15:00:00,429 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N, countZeroThread1of1ForFork0_i1) = 1*N - 1*countZeroThread1of1ForFork0_i1 Supporting invariants [] [2022-09-29 15:00:00,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-09-29 15:00:00,456 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-09-29 15:00:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 15:00:00,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-29 15:00:00,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 15:00:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 15:00:00,512 WARN L261 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-29 15:00:00,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 15:00:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 15:00:00,553 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-09-29 15:00:00,555 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 120 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 15:00:00,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 120 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 320 states and 1269 transitions. Complement of second has 4 states. [2022-09-29 15:00:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-09-29 15:00:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 15:00:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2022-09-29 15:00:00,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 2 letters. Loop has 1 letters. [2022-09-29 15:00:00,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:00:00,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 3 letters. Loop has 1 letters. [2022-09-29 15:00:00,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:00:00,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 2 letters. Loop has 2 letters. [2022-09-29 15:00:00,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 15:00:00,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 1269 transitions. [2022-09-29 15:00:00,707 INFO L131 ngComponentsAnalysis]: Automaton has 55 accepting balls. 55 [2022-09-29 15:00:00,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 232 states and 921 transitions. [2022-09-29 15:00:00,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2022-09-29 15:00:00,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 181 [2022-09-29 15:00:00,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 232 states and 921 transitions. [2022-09-29 15:00:00,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-09-29 15:00:00,726 INFO L218 hiAutomatonCegarLoop]: Abstraction has 232 states and 921 transitions. [2022-09-29 15:00:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states and 921 transitions. [2022-09-29 15:00:00,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 183. [2022-09-29 15:00:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 183 states have (on average 4.158469945355192) internal successors, (761), 182 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 15:00:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 761 transitions. [2022-09-29 15:00:00,766 INFO L240 hiAutomatonCegarLoop]: Abstraction has 183 states and 761 transitions. [2022-09-29 15:00:00,766 INFO L428 stractBuchiCegarLoop]: Abstraction has 183 states and 761 transitions. [2022-09-29 15:00:00,766 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-09-29 15:00:00,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 761 transitions. [2022-09-29 15:00:00,769 INFO L131 ngComponentsAnalysis]: Automaton has 55 accepting balls. 55 [2022-09-29 15:00:00,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-09-29 15:00:00,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-09-29 15:00:00,770 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-09-29 15:00:00,770 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-09-29 15:00:00,771 INFO L733 eck$LassoCheckResult]: Stem: 994#[ULTIMATE.startENTRY]don't care [118] ULTIMATE.startENTRY-->countZeroENTRY: Formula: (= v_countZeroThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{countZeroThread1of1ForFork0_thidvar0=v_countZeroThread1of1ForFork0_thidvar0_2, countZeroThread1of1ForFork0_i1=v_countZeroThread1of1ForFork0_i1_16} AuxVars[] AssignedVars[countZeroThread1of1ForFork0_thidvar0, countZeroThread1of1ForFork0_i1] 906#[countZeroENTRY, L76]don't care [121] L76-->countEvenENTRY: Formula: (and (= 2 v_countEvenThread1of1ForFork1_thidvar0_2) (= 2 v_countEvenThread1of1ForFork1_thidvar1_2)) InVars {} OutVars{countEvenThread1of1ForFork1_thidvar1=v_countEvenThread1of1ForFork1_thidvar1_2, countEvenThread1of1ForFork1_i2=v_countEvenThread1of1ForFork1_i2_16, countEvenThread1of1ForFork1_thidvar0=v_countEvenThread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[countEvenThread1of1ForFork1_thidvar1, countEvenThread1of1ForFork1_i2, countEvenThread1of1ForFork1_thidvar0] 726#[L77, countEvenENTRY, countZeroENTRY]don't care [140] countEvenENTRY-->L48-1: Formula: (and (= v_countEvenThread1of1ForFork1_i2_25 0) (= v_cntEven_21 0)) InVars {} OutVars{cntEven=v_cntEven_21, countEvenThread1of1ForFork1_i2=v_countEvenThread1of1ForFork1_i2_25} AuxVars[] AssignedVars[cntEven, countEvenThread1of1ForFork1_i2] 732#[L48-1, countZeroENTRY, L77]don't care [2022-09-29 15:00:00,771 INFO L735 eck$LassoCheckResult]: Loop: 732#[L48-1, countZeroENTRY, L77]don't care [149] L48-1-->L48-1: Formula: (let ((.cse0 ((_ divisible 2) (select v_A_In_1 v_countEvenThread1of1ForFork1_i2_In_1))) (.cse1 (< v_countEvenThread1of1ForFork1_i2_In_1 v_N_In_1)) (.cse2 (= (+ v_countEvenThread1of1ForFork1_i2_In_1 1) v_countEvenThread1of1ForFork1_i2_Out_2))) (or (and (= v_cntEven_In_1 v_cntEven_Out_2) (not .cse0) .cse1 .cse2) (and .cse0 (= v_cntEven_Out_2 (+ v_cntEven_In_1 1)) .cse1 .cse2))) InVars {A=v_A_In_1, cntEven=v_cntEven_In_1, N=v_N_In_1, countEvenThread1of1ForFork1_i2=v_countEvenThread1of1ForFork1_i2_In_1} OutVars{A=v_A_In_1, cntEven=v_cntEven_Out_2, N=v_N_In_1, countEvenThread1of1ForFork1_i2=v_countEvenThread1of1ForFork1_i2_Out_2} AuxVars[] AssignedVars[cntEven, countEvenThread1of1ForFork1_i2] 732#[L48-1, countZeroENTRY, L77]don't care [2022-09-29 15:00:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash 147080, now seen corresponding path program 1 times [2022-09-29 15:00:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:00,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591030244] [2022-09-29 15:00:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:00,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:00,776 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:00,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 180, now seen corresponding path program 1 times [2022-09-29 15:00:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:00,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160971758] [2022-09-29 15:00:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:00,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:00,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 15:00:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 4559629, now seen corresponding path program 1 times [2022-09-29 15:00:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 15:00:00,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611470898] [2022-09-29 15:00:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 15:00:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 15:00:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:00,813 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 15:00:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 15:00:00,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 15:00:00,909 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 15:00:00,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 15:00:00,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 15:00:00,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 15:00:00,909 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-09-29 15:00:00,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 15:00:00,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 15:00:00,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 15:00:00,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: count0-countEven-sample-abs.bpl_BEv2_Iteration2_Lasso [2022-09-29 15:00:00,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 15:00:00,910 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 15:00:00,912 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:00:00,915 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:00:00,917 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:00:00,919 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 15:00:00,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true de.uni_freiburg.informatik.ultimate.lassoranker.exceptions.UnknownFunctionException: Unknown function symbol: divisible @term: ((_ divisible 2) |v_array_A[countEvenThread1of1ForFork1_i2]_3|) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.InequalityConverter.convert(InequalityConverter.java:157) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.InequalityConverter.convert(InequalityConverter.java:136) at de.uni_freiburg.informatik.ultimate.lassoranker.LinearTransition.fromTransFormulaLR(LinearTransition.java:211) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.constructPolyhedra(LassoBuilder.java:201) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:285) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:600) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:893) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:804) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:254) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.cegar.AbstractBuchiCegarLoop.runCegarLoop(AbstractBuchiCegarLoop.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.runCegarLoops(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:331) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-09-29 15:00:01,051 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: TermException de.uni_freiburg.informatik.ultimate.lassoranker.exceptions.UnknownFunctionException: Unknown function symbol: divisible @term: ((_ divisible 2) |v_array_A[countEvenThread1of1ForFork1_i2]_3|) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:893) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:804) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:254) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.cegar.AbstractBuchiCegarLoop.runCegarLoop(AbstractBuchiCegarLoop.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.runCegarLoops(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:331) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-09-29 15:00:01,058 INFO L158 Benchmark]: Toolchain (without parser) took 2329.57ms. Allocated memory was 189.8MB in the beginning and 247.5MB in the end (delta: 57.7MB). Free memory was 142.6MB in the beginning and 164.6MB in the end (delta: -22.0MB). Peak memory consumption was 36.0MB. Max. memory is 8.0GB. [2022-09-29 15:00:01,059 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 189.8MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 15:00:01,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.51ms. Allocated memory is still 189.8MB. Free memory was 142.5MB in the beginning and 141.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-29 15:00:01,062 INFO L158 Benchmark]: Boogie Preprocessor took 14.46ms. Allocated memory is still 189.8MB. Free memory was 141.0MB in the beginning and 139.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-29 15:00:01,065 INFO L158 Benchmark]: RCFGBuilder took 256.70ms. Allocated memory is still 189.8MB. Free memory was 139.8MB in the beginning and 158.3MB in the end (delta: -18.5MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-09-29 15:00:01,065 INFO L158 Benchmark]: BuchiAutomizer took 2028.64ms. Allocated memory was 189.8MB in the beginning and 247.5MB in the end (delta: 57.7MB). Free memory was 158.3MB in the beginning and 164.6MB in the end (delta: -6.2MB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. [2022-09-29 15:00:01,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19ms. Allocated memory is still 189.8MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.51ms. Allocated memory is still 189.8MB. Free memory was 142.5MB in the beginning and 141.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.46ms. Allocated memory is still 189.8MB. Free memory was 141.0MB in the beginning and 139.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 256.70ms. Allocated memory is still 189.8MB. Free memory was 139.8MB in the beginning and 158.3MB in the end (delta: -18.5MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * BuchiAutomizer took 2028.64ms. Allocated memory was 189.8MB in the beginning and 247.5MB in the end (delta: 57.7MB). Free memory was 158.3MB in the beginning and 164.6MB in the end (delta: -6.2MB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 43 PlacesBefore, 28 PlacesAfterwards, 35 TransitionsBefore, 18 TransitionsAfterwards, 666 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 21 TotalNumberOfCompositions, 531 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 462, positive: 457, positive conditional: 0, positive unconditional: 457, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 351, positive: 346, positive conditional: 0, positive unconditional: 346, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 351, positive: 338, positive conditional: 0, positive unconditional: 338, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 462, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 351, unknown conditional: 0, unknown unconditional: 351] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: TermException de.uni_freiburg.informatik.ultimate.lassoranker.exceptions.UnknownFunctionException: Unknown function symbol: divisible @term: ((_ divisible 2) |v_array_A[countEvenThread1of1ForFork1_i2]_3|) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: TermException de.uni_freiburg.informatik.ultimate.lassoranker.exceptions.UnknownFunctionException: Unknown function symbol: divisible @term: ((_ divisible 2) |v_array_A[countEvenThread1of1ForFork1_i2]_3|): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:607) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-09-29 15:00:01,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-09-29 15:00:01,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...