./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:26:13,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:26:13,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:26:13,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:26:13,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:26:13,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:26:13,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:26:13,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:26:13,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:26:13,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:26:13,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:26:13,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:26:13,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:26:13,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:26:13,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:26:13,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:26:13,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:26:13,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:26:13,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:26:13,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:26:13,732 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:26:13,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:26:13,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:26:13,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:26:13,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:26:13,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:26:13,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:26:13,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:26:13,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:26:13,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:26:13,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:26:13,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:26:13,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:26:13,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:26:13,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:26:13,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:26:13,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:26:13,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:26:13,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:26:13,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:26:13,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:26:13,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:26:13,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:26:13,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:26:13,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:26:13,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:26:13,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:26:13,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:26:13,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:26:13,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:26:13,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:26:13,788 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:26:13,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:26:13,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:26:13,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:26:13,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:26:13,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:26:13,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:26:13,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:26:13,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:26:13,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:26:13,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:26:13,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:26:13,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:26:13,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:26:13,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:26:13,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:26:13,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:26:13,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:26:13,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:26:13,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:26:13,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:26:13,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:26:13,794 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:26:13,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:26:13,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:26:13,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2022-07-22 21:26:14,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:26:14,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:26:14,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:26:14,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:26:14,100 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:26:14,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-22 21:26:14,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb149b62/0727f06d2561445eb0667138bb9c8dd2/FLAG90e67461f [2022-07-22 21:26:14,722 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:26:14,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-22 21:26:14,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb149b62/0727f06d2561445eb0667138bb9c8dd2/FLAG90e67461f [2022-07-22 21:26:15,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb149b62/0727f06d2561445eb0667138bb9c8dd2 [2022-07-22 21:26:15,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:26:15,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:26:15,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:26:15,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:26:15,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:26:15,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d60a2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15, skipping insertion in model container [2022-07-22 21:26:15,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:26:15,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:26:15,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-22 21:26:15,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:26:15,561 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:26:15,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-22 21:26:15,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:26:15,666 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:26:15,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15 WrapperNode [2022-07-22 21:26:15,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:26:15,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:26:15,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:26:15,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:26:15,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,730 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-22 21:26:15,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:26:15,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:26:15,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:26:15,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:26:15,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:26:15,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:26:15,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:26:15,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:26:15,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (1/1) ... [2022-07-22 21:26:15,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:26:15,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:26:15,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:26:15,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:26:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:26:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:26:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:26:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:26:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:26:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:26:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:26:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:26:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:26:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:26:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:26:15,868 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:26:16,016 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:26:16,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:26:16,158 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:26:16,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:26:16,166 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:26:16,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:16 BoogieIcfgContainer [2022-07-22 21:26:16,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:26:16,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:26:16,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:26:16,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:26:16,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:26:15" (1/3) ... [2022-07-22 21:26:16,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ab85ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:26:16, skipping insertion in model container [2022-07-22 21:26:16,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:15" (2/3) ... [2022-07-22 21:26:16,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ab85ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:26:16, skipping insertion in model container [2022-07-22 21:26:16,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:16" (3/3) ... [2022-07-22 21:26:16,181 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-22 21:26:16,188 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:26:16,195 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:26:16,196 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:26:16,196 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:26:16,240 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:26:16,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-07-22 21:26:16,321 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-22 21:26:16,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:26:16,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-22 21:26:16,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-07-22 21:26:16,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-07-22 21:26:16,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:26:16,363 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5619e9ea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@30d00b11 [2022-07-22 21:26:16,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:26:16,399 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-07-22 21:26:16,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:26:16,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:16,404 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:16,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-07-22 21:26:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517753917] [2022-07-22 21:26:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:16,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517753917] [2022-07-22 21:26:16,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517753917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:16,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:16,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:16,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942454674] [2022-07-22 21:26:16,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:16,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:16,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:17,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-07-22 21:26:17,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:17,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:17,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:17,510 INFO L129 PetriNetUnfolder]: 369/1023 cut-off events. [2022-07-22 21:26:17,510 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-22 21:26:17,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 1023 events. 369/1023 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6632 event pairs, 60 based on Foata normal form. 31/1023 useless extension candidates. Maximal degree in co-relation 1648. Up to 229 conditions per place. [2022-07-22 21:26:17,524 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 21 selfloop transitions, 8 changer transitions 37/122 dead transitions. [2022-07-22 21:26:17,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 391 flow [2022-07-22 21:26:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2022-07-22 21:26:17,544 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8454106280193237 [2022-07-22 21:26:17,545 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2022-07-22 21:26:17,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2022-07-22 21:26:17,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:17,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2022-07-22 21:26:17,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 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) [2022-07-22 21:26:17,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-07-22 21:26:17,569 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-07-22 21:26:17,571 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 700 transitions. [2022-07-22 21:26:17,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 391 flow [2022-07-22 21:26:17,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:26:17,584 INFO L242 Difference]: Finished difference. Result has 97 places, 79 transitions, 250 flow [2022-07-22 21:26:17,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-07-22 21:26:17,589 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-07-22 21:26:17,590 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 250 flow [2022-07-22 21:26:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-07-22 21:26:17,591 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:17,591 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:17,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:26:17,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1081069657, now seen corresponding path program 1 times [2022-07-22 21:26:17,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:17,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614524295] [2022-07-22 21:26:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:17,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614524295] [2022-07-22 21:26:17,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614524295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:17,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:17,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164906885] [2022-07-22 21:26:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:17,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:17,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:17,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-07-22 21:26:17,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:17,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:17,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:18,071 INFO L129 PetriNetUnfolder]: 229/662 cut-off events. [2022-07-22 21:26:18,072 INFO L130 PetriNetUnfolder]: For 1218/1554 co-relation queries the response was YES. [2022-07-22 21:26:18,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 662 events. 229/662 cut-off events. For 1218/1554 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3638 event pairs, 14 based on Foata normal form. 21/655 useless extension candidates. Maximal degree in co-relation 2044. Up to 174 conditions per place. [2022-07-22 21:26:18,081 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 26 selfloop transitions, 9 changer transitions 58/149 dead transitions. [2022-07-22 21:26:18,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 962 flow [2022-07-22 21:26:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:26:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:26:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 989 transitions. [2022-07-22 21:26:18,085 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2022-07-22 21:26:18,085 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 989 transitions. [2022-07-22 21:26:18,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 989 transitions. [2022-07-22 21:26:18,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:18,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 989 transitions. [2022-07-22 21:26:18,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.07692307692308) internal successors, (989), 13 states have internal predecessors, (989), 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) [2022-07-22 21:26:18,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:18,092 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:18,092 INFO L186 Difference]: Start difference. First operand has 97 places, 79 transitions, 250 flow. Second operand 13 states and 989 transitions. [2022-07-22 21:26:18,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 962 flow [2022-07-22 21:26:18,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 149 transitions, 896 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:26:18,105 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 332 flow [2022-07-22 21:26:18,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=332, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-07-22 21:26:18,107 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-07-22 21:26:18,107 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 332 flow [2022-07-22 21:26:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-07-22 21:26:18,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:18,108 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:18,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:26:18,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:18,109 INFO L85 PathProgramCache]: Analyzing trace with hash 903878887, now seen corresponding path program 1 times [2022-07-22 21:26:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:18,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960373246] [2022-07-22 21:26:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960373246] [2022-07-22 21:26:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960373246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:18,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:18,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303970907] [2022-07-22 21:26:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:18,301 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:18,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-07-22 21:26:18,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:18,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:18,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:18,550 INFO L129 PetriNetUnfolder]: 124/470 cut-off events. [2022-07-22 21:26:18,551 INFO L130 PetriNetUnfolder]: For 1677/1836 co-relation queries the response was YES. [2022-07-22 21:26:18,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 470 events. 124/470 cut-off events. For 1677/1836 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2338 event pairs, 4 based on Foata normal form. 16/467 useless extension candidates. Maximal degree in co-relation 1561. Up to 105 conditions per place. [2022-07-22 21:26:18,555 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 25 selfloop transitions, 14 changer transitions 40/135 dead transitions. [2022-07-22 21:26:18,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 135 transitions, 948 flow [2022-07-22 21:26:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:26:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:26:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 981 transitions. [2022-07-22 21:26:18,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8202341137123745 [2022-07-22 21:26:18,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 981 transitions. [2022-07-22 21:26:18,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 981 transitions. [2022-07-22 21:26:18,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:18,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 981 transitions. [2022-07-22 21:26:18,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.46153846153847) internal successors, (981), 13 states have internal predecessors, (981), 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) [2022-07-22 21:26:18,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:18,565 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:18,565 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 332 flow. Second operand 13 states and 981 transitions. [2022-07-22 21:26:18,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 135 transitions, 948 flow [2022-07-22 21:26:18,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 135 transitions, 863 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-07-22 21:26:18,575 INFO L242 Difference]: Finished difference. Result has 124 places, 87 transitions, 432 flow [2022-07-22 21:26:18,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=432, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2022-07-22 21:26:18,576 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-07-22 21:26:18,576 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 432 flow [2022-07-22 21:26:18,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-07-22 21:26:18,577 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:18,577 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:18,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:26:18,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash -454503192, now seen corresponding path program 1 times [2022-07-22 21:26:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:18,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186640249] [2022-07-22 21:26:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:18,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:18,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186640249] [2022-07-22 21:26:18,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186640249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:18,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:18,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374105311] [2022-07-22 21:26:18,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:18,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:18,730 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:18,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 87 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2022-07-22 21:26:18,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:18,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:18,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:18,979 INFO L129 PetriNetUnfolder]: 71/371 cut-off events. [2022-07-22 21:26:18,979 INFO L130 PetriNetUnfolder]: For 1396/1630 co-relation queries the response was YES. [2022-07-22 21:26:18,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 371 events. 71/371 cut-off events. For 1396/1630 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1769 event pairs, 3 based on Foata normal form. 16/375 useless extension candidates. Maximal degree in co-relation 1186. Up to 73 conditions per place. [2022-07-22 21:26:18,984 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 27 selfloop transitions, 16 changer transitions 28/127 dead transitions. [2022-07-22 21:26:18,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 127 transitions, 970 flow [2022-07-22 21:26:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:26:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:26:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 969 transitions. [2022-07-22 21:26:18,988 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.810200668896321 [2022-07-22 21:26:18,988 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 969 transitions. [2022-07-22 21:26:18,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 969 transitions. [2022-07-22 21:26:18,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:18,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 969 transitions. [2022-07-22 21:26:18,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 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) [2022-07-22 21:26:18,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:18,999 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:18,999 INFO L186 Difference]: Start difference. First operand has 124 places, 87 transitions, 432 flow. Second operand 13 states and 969 transitions. [2022-07-22 21:26:18,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 127 transitions, 970 flow [2022-07-22 21:26:19,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 127 transitions, 836 flow, removed 65 selfloop flow, removed 13 redundant places. [2022-07-22 21:26:19,009 INFO L242 Difference]: Finished difference. Result has 126 places, 90 transitions, 505 flow [2022-07-22 21:26:19,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=505, PETRI_PLACES=126, PETRI_TRANSITIONS=90} [2022-07-22 21:26:19,010 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-07-22 21:26:19,010 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 90 transitions, 505 flow [2022-07-22 21:26:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2022-07-22 21:26:19,011 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:19,011 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:26:19,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:19,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash 309806588, now seen corresponding path program 1 times [2022-07-22 21:26:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:19,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232768427] [2022-07-22 21:26:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:19,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232768427] [2022-07-22 21:26:19,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232768427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:19,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:19,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281695542] [2022-07-22 21:26:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:19,181 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:19,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 90 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2022-07-22 21:26:19,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:19,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:19,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:19,378 INFO L129 PetriNetUnfolder]: 45/287 cut-off events. [2022-07-22 21:26:19,378 INFO L130 PetriNetUnfolder]: For 970/1233 co-relation queries the response was YES. [2022-07-22 21:26:19,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 287 events. 45/287 cut-off events. For 970/1233 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1263 event pairs, 4 based on Foata normal form. 8/284 useless extension candidates. Maximal degree in co-relation 921. Up to 45 conditions per place. [2022-07-22 21:26:19,382 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 32 selfloop transitions, 18 changer transitions 16/122 dead transitions. [2022-07-22 21:26:19,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 948 flow [2022-07-22 21:26:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:26:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:26:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2022-07-22 21:26:19,385 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2022-07-22 21:26:19,385 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2022-07-22 21:26:19,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2022-07-22 21:26:19,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:19,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2022-07-22 21:26:19,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 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) [2022-07-22 21:26:19,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:19,392 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:19,392 INFO L186 Difference]: Start difference. First operand has 126 places, 90 transitions, 505 flow. Second operand 13 states and 962 transitions. [2022-07-22 21:26:19,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 948 flow [2022-07-22 21:26:19,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 122 transitions, 849 flow, removed 44 selfloop flow, removed 13 redundant places. [2022-07-22 21:26:19,400 INFO L242 Difference]: Finished difference. Result has 128 places, 95 transitions, 637 flow [2022-07-22 21:26:19,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=637, PETRI_PLACES=128, PETRI_TRANSITIONS=95} [2022-07-22 21:26:19,402 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 44 predicate places. [2022-07-22 21:26:19,402 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 95 transitions, 637 flow [2022-07-22 21:26:19,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2022-07-22 21:26:19,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:19,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:19,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:26:19,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash 513336377, now seen corresponding path program 1 times [2022-07-22 21:26:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:19,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496519901] [2022-07-22 21:26:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:19,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:19,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496519901] [2022-07-22 21:26:19,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496519901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:19,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:19,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524597919] [2022-07-22 21:26:19,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:19,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:19,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:26:19,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 95 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2022-07-22 21:26:19,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:19,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:26:19,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:19,624 INFO L129 PetriNetUnfolder]: 39/263 cut-off events. [2022-07-22 21:26:19,624 INFO L130 PetriNetUnfolder]: For 1267/1903 co-relation queries the response was YES. [2022-07-22 21:26:19,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 263 events. 39/263 cut-off events. For 1267/1903 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1151 event pairs, 3 based on Foata normal form. 4/260 useless extension candidates. Maximal degree in co-relation 926. Up to 50 conditions per place. [2022-07-22 21:26:19,627 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 9 selfloop transitions, 5 changer transitions 23/108 dead transitions. [2022-07-22 21:26:19,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 108 transitions, 799 flow [2022-07-22 21:26:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 777 transitions. [2022-07-22 21:26:19,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8445652173913043 [2022-07-22 21:26:19,629 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 777 transitions. [2022-07-22 21:26:19,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 777 transitions. [2022-07-22 21:26:19,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:19,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 777 transitions. [2022-07-22 21:26:19,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.7) internal successors, (777), 10 states have internal predecessors, (777), 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) [2022-07-22 21:26:19,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-07-22 21:26:19,634 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-07-22 21:26:19,634 INFO L186 Difference]: Start difference. First operand has 128 places, 95 transitions, 637 flow. Second operand 10 states and 777 transitions. [2022-07-22 21:26:19,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 108 transitions, 799 flow [2022-07-22 21:26:19,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 730 flow, removed 31 selfloop flow, removed 13 redundant places. [2022-07-22 21:26:19,640 INFO L242 Difference]: Finished difference. Result has 123 places, 85 transitions, 471 flow [2022-07-22 21:26:19,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=123, PETRI_TRANSITIONS=85} [2022-07-22 21:26:19,641 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2022-07-22 21:26:19,641 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 85 transitions, 471 flow [2022-07-22 21:26:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2022-07-22 21:26:19,642 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:19,642 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:19,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:26:19,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 6806727, now seen corresponding path program 1 times [2022-07-22 21:26:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:19,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943795892] [2022-07-22 21:26:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:19,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:19,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943795892] [2022-07-22 21:26:19,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943795892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:19,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:19,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810572831] [2022-07-22 21:26:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:19,716 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:26:19,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 85 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2022-07-22 21:26:19,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:19,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:26:19,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:19,878 INFO L129 PetriNetUnfolder]: 264/734 cut-off events. [2022-07-22 21:26:19,878 INFO L130 PetriNetUnfolder]: For 629/644 co-relation queries the response was YES. [2022-07-22 21:26:19,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 734 events. 264/734 cut-off events. For 629/644 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4798 event pairs, 4 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 1510. Up to 191 conditions per place. [2022-07-22 21:26:19,886 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 15 changer transitions 5/116 dead transitions. [2022-07-22 21:26:19,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 116 transitions, 625 flow [2022-07-22 21:26:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 797 transitions. [2022-07-22 21:26:19,888 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.866304347826087 [2022-07-22 21:26:19,888 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 797 transitions. [2022-07-22 21:26:19,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 797 transitions. [2022-07-22 21:26:19,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:19,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 797 transitions. [2022-07-22 21:26:19,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.7) internal successors, (797), 10 states have internal predecessors, (797), 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) [2022-07-22 21:26:19,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-07-22 21:26:19,893 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-07-22 21:26:19,893 INFO L186 Difference]: Start difference. First operand has 123 places, 85 transitions, 471 flow. Second operand 10 states and 797 transitions. [2022-07-22 21:26:19,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 116 transitions, 625 flow [2022-07-22 21:26:19,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 559 flow, removed 18 selfloop flow, removed 15 redundant places. [2022-07-22 21:26:19,912 INFO L242 Difference]: Finished difference. Result has 117 places, 98 transitions, 514 flow [2022-07-22 21:26:19,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=514, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2022-07-22 21:26:19,913 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2022-07-22 21:26:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 514 flow [2022-07-22 21:26:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2022-07-22 21:26:19,914 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:19,914 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:26:19,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:19,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1434859680, now seen corresponding path program 1 times [2022-07-22 21:26:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:19,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516730382] [2022-07-22 21:26:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:20,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516730382] [2022-07-22 21:26:20,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516730382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:20,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:20,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109192465] [2022-07-22 21:26:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:20,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:26:20,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 514 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-07-22 21:26:20,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:20,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:26:20,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:20,219 INFO L129 PetriNetUnfolder]: 261/740 cut-off events. [2022-07-22 21:26:20,220 INFO L130 PetriNetUnfolder]: For 1845/1987 co-relation queries the response was YES. [2022-07-22 21:26:20,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 740 events. 261/740 cut-off events. For 1845/1987 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4926 event pairs, 0 based on Foata normal form. 57/775 useless extension candidates. Maximal degree in co-relation 2464. Up to 279 conditions per place. [2022-07-22 21:26:20,227 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 28 changer transitions 11/134 dead transitions. [2022-07-22 21:26:20,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 868 flow [2022-07-22 21:26:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:26:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:26:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1034 transitions. [2022-07-22 21:26:20,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8645484949832776 [2022-07-22 21:26:20,231 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1034 transitions. [2022-07-22 21:26:20,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1034 transitions. [2022-07-22 21:26:20,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:20,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1034 transitions. [2022-07-22 21:26:20,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.53846153846153) internal successors, (1034), 13 states have internal predecessors, (1034), 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) [2022-07-22 21:26:20,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:20,237 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-07-22 21:26:20,237 INFO L186 Difference]: Start difference. First operand has 117 places, 98 transitions, 514 flow. Second operand 13 states and 1034 transitions. [2022-07-22 21:26:20,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 868 flow [2022-07-22 21:26:20,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:26:20,245 INFO L242 Difference]: Finished difference. Result has 134 places, 115 transitions, 738 flow [2022-07-22 21:26:20,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=738, PETRI_PLACES=134, PETRI_TRANSITIONS=115} [2022-07-22 21:26:20,246 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 50 predicate places. [2022-07-22 21:26:20,246 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 115 transitions, 738 flow [2022-07-22 21:26:20,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-07-22 21:26:20,247 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:20,247 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:20,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:26:20,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash 226942149, now seen corresponding path program 1 times [2022-07-22 21:26:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:20,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486590129] [2022-07-22 21:26:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:20,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:20,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486590129] [2022-07-22 21:26:20,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486590129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:20,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:20,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:26:20,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397218953] [2022-07-22 21:26:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:20,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:26:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:26:20,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:26:20,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:26:20,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 115 transitions, 738 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2022-07-22 21:26:20,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:20,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:26:20,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:20,608 INFO L129 PetriNetUnfolder]: 185/644 cut-off events. [2022-07-22 21:26:20,608 INFO L130 PetriNetUnfolder]: For 2903/3069 co-relation queries the response was YES. [2022-07-22 21:26:20,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 644 events. 185/644 cut-off events. For 2903/3069 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4651 event pairs, 0 based on Foata normal form. 57/679 useless extension candidates. Maximal degree in co-relation 2659. Up to 201 conditions per place. [2022-07-22 21:26:20,615 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 19 selfloop transitions, 32 changer transitions 24/142 dead transitions. [2022-07-22 21:26:20,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 142 transitions, 1066 flow [2022-07-22 21:26:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:26:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:26:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1256 transitions. [2022-07-22 21:26:20,619 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8532608695652174 [2022-07-22 21:26:20,620 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1256 transitions. [2022-07-22 21:26:20,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1256 transitions. [2022-07-22 21:26:20,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:20,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1256 transitions. [2022-07-22 21:26:20,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 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) [2022-07-22 21:26:20,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2022-07-22 21:26:20,627 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2022-07-22 21:26:20,627 INFO L186 Difference]: Start difference. First operand has 134 places, 115 transitions, 738 flow. Second operand 16 states and 1256 transitions. [2022-07-22 21:26:20,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 142 transitions, 1066 flow [2022-07-22 21:26:20,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 978 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-07-22 21:26:20,644 INFO L242 Difference]: Finished difference. Result has 149 places, 112 transitions, 720 flow [2022-07-22 21:26:20,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=720, PETRI_PLACES=149, PETRI_TRANSITIONS=112} [2022-07-22 21:26:20,645 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 65 predicate places. [2022-07-22 21:26:20,645 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 112 transitions, 720 flow [2022-07-22 21:26:20,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2022-07-22 21:26:20,646 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:20,646 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:20,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:26:20,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1864704222, now seen corresponding path program 1 times [2022-07-22 21:26:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128290559] [2022-07-22 21:26:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:20,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:20,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:20,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128290559] [2022-07-22 21:26:20,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128290559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:20,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:20,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:26:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155882373] [2022-07-22 21:26:20,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:20,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:26:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:20,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:26:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:26:20,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:20,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 112 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 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) [2022-07-22 21:26:20,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:20,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:20,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:20,868 INFO L129 PetriNetUnfolder]: 81/482 cut-off events. [2022-07-22 21:26:20,868 INFO L130 PetriNetUnfolder]: For 1403/1422 co-relation queries the response was YES. [2022-07-22 21:26:20,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 482 events. 81/482 cut-off events. For 1403/1422 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3362 event pairs, 0 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 1556. Up to 65 conditions per place. [2022-07-22 21:26:20,873 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 11 selfloop transitions, 7 changer transitions 40/119 dead transitions. [2022-07-22 21:26:20,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 119 transitions, 822 flow [2022-07-22 21:26:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2022-07-22 21:26:20,875 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7958937198067633 [2022-07-22 21:26:20,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2022-07-22 21:26:20,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2022-07-22 21:26:20,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:20,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2022-07-22 21:26:20,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 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) [2022-07-22 21:26:20,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-07-22 21:26:20,878 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-07-22 21:26:20,879 INFO L186 Difference]: Start difference. First operand has 149 places, 112 transitions, 720 flow. Second operand 9 states and 659 transitions. [2022-07-22 21:26:20,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 119 transitions, 822 flow [2022-07-22 21:26:20,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 119 transitions, 694 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-07-22 21:26:20,892 INFO L242 Difference]: Finished difference. Result has 141 places, 79 transitions, 346 flow [2022-07-22 21:26:20,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=141, PETRI_TRANSITIONS=79} [2022-07-22 21:26:20,892 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 57 predicate places. [2022-07-22 21:26:20,893 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 79 transitions, 346 flow [2022-07-22 21:26:20,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 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) [2022-07-22 21:26:20,893 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:20,894 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:20,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:26:20,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:26:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1769550120, now seen corresponding path program 2 times [2022-07-22 21:26:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:20,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436065411] [2022-07-22 21:26:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436065411] [2022-07-22 21:26:21,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436065411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:21,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:21,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:26:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292686430] [2022-07-22 21:26:21,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:21,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:26:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:26:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:26:21,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:26:21,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 79 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 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) [2022-07-22 21:26:21,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:21,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:26:21,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:21,095 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2022-07-22 21:26:21,095 INFO L130 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-07-22 21:26:21,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 94 events. 6/94 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2022-07-22 21:26:21,096 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-07-22 21:26:21,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 78 transitions, 380 flow [2022-07-22 21:26:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:26:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:26:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 579 transitions. [2022-07-22 21:26:21,098 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7866847826086957 [2022-07-22 21:26:21,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 579 transitions. [2022-07-22 21:26:21,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 579 transitions. [2022-07-22 21:26:21,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:21,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 579 transitions. [2022-07-22 21:26:21,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 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) [2022-07-22 21:26:21,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2022-07-22 21:26:21,101 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2022-07-22 21:26:21,101 INFO L186 Difference]: Start difference. First operand has 141 places, 79 transitions, 346 flow. Second operand 8 states and 579 transitions. [2022-07-22 21:26:21,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 78 transitions, 380 flow [2022-07-22 21:26:21,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 78 transitions, 248 flow, removed 15 selfloop flow, removed 33 redundant places. [2022-07-22 21:26:21,104 INFO L242 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2022-07-22 21:26:21,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2022-07-22 21:26:21,105 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2022-07-22 21:26:21,105 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2022-07-22 21:26:21,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 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) [2022-07-22 21:26:21,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-22 21:26:21,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-22 21:26:21,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:26:21,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-22 21:26:21,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:26:21,109 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:21,112 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:26:21,112 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:26:21,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:26:21 BasicIcfg [2022-07-22 21:26:21,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:26:21,118 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:26:21,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:26:21,118 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:26:21,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:16" (3/4) ... [2022-07-22 21:26:21,121 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:26:21,126 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-22 21:26:21,127 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-22 21:26:21,127 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-22 21:26:21,131 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-22 21:26:21,131 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:26:21,131 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:26:21,131 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:26:21,158 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:26:21,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:26:21,159 INFO L158 Benchmark]: Toolchain (without parser) took 5978.42ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 54.4MB in the beginning and 35.0MB in the end (delta: 19.4MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,159 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 72.6MB in the beginning and 72.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:26:21,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.77ms. Allocated memory is still 92.3MB. Free memory was 54.2MB in the beginning and 57.7MB in the end (delta: -3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.36ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 55.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,160 INFO L158 Benchmark]: Boogie Preprocessor took 50.19ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 54.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,160 INFO L158 Benchmark]: RCFGBuilder took 390.47ms. Allocated memory is still 92.3MB. Free memory was 54.3MB in the beginning and 42.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,161 INFO L158 Benchmark]: TraceAbstraction took 4942.59ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 41.7MB in the beginning and 38.1MB in the end (delta: 3.6MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,161 INFO L158 Benchmark]: Witness Printer took 40.57ms. Allocated memory is still 134.2MB. Free memory was 38.1MB in the beginning and 35.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 21:26:21,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 72.6MB in the beginning and 72.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.77ms. Allocated memory is still 92.3MB. Free memory was 54.2MB in the beginning and 57.7MB in the end (delta: -3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.36ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 55.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.19ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 54.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.47ms. Allocated memory is still 92.3MB. Free memory was 54.3MB in the beginning and 42.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4942.59ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 41.7MB in the beginning and 38.1MB in the end (delta: 3.6MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. * Witness Printer took 40.57ms. Allocated memory is still 134.2MB. Free memory was 38.1MB in the beginning and 35.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 430 mSDsluCounter, 680 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 670 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 729 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 156 mSDtfsCounter, 729 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=738occurred in iteration=8, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 676 NumberOfCodeBlocks, 676 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 665 ConstructedInterpolants, 0 QuantifiedInterpolants, 3373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:26:21,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE