./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/weaver/parallel-ticket-5.wvr.c -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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:02:51,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:02:51,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:02:51,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:02:51,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:02:51,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:02:51,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:02:51,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:02:51,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:02:51,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:02:51,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:02:51,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:02:51,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:02:51,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:02:51,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:02:51,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:02:51,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:02:51,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:02:51,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:02:51,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:02:51,419 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:02:51,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:02:51,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:02:51,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:02:51,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:02:51,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:02:51,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:02:51,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:02:51,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:02:51,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:02:51,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:02:51,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:02:51,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:02:51,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:02:51,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:02:51,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:02:51,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:02:51,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:02:51,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:02:51,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:02:51,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:02:51,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:02:51,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:02:51,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:02:51,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:02:51,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:02:51,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:02:51,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:02:51,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:02:51,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:02:51,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:02:51,479 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:02:51,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:02:51,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:02:51,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:02:51,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:02:51,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:02:51,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:02:51,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:02:51,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:02:51,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:02:51,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:02:51,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:02:51,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:02:51,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:02:51,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:02:51,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:02:51,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:02:51,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:02:51,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:02:51,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:02:51,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:02:51,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:02:51,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:02:51,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:02:51,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:02:51,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-07-21 09:02:51,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:02:51,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:02:51,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:02:51,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:02:51,830 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:02:51,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-07-21 09:02:51,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066f39d82/2bd374c0b285483bae88af2ceca17766/FLAGf5158ea87 [2022-07-21 09:02:52,338 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:02:52,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-07-21 09:02:52,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066f39d82/2bd374c0b285483bae88af2ceca17766/FLAGf5158ea87 [2022-07-21 09:02:52,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066f39d82/2bd374c0b285483bae88af2ceca17766 [2022-07-21 09:02:52,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:02:52,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:02:52,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:02:52,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:02:52,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:02:52,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:02:52" (1/1) ... [2022-07-21 09:02:52,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a09244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:52, skipping insertion in model container [2022-07-21 09:02:52,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:02:52" (1/1) ... [2022-07-21 09:02:52,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:02:52,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:02:52,934 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/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-07-21 09:02:52,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:02:52,949 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:02:52,988 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/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-07-21 09:02:52,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:02:53,010 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:02:53,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53 WrapperNode [2022-07-21 09:02:53,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:02:53,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:02:53,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:02:53,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:02:53,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,071 INFO L137 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-07-21 09:02:53,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:02:53,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:02:53,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:02:53,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:02:53,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:02:53,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:02:53,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:02:53,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:02:53,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (1/1) ... [2022-07-21 09:02:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:02:53,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:53,160 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) [2022-07-21 09:02:53,186 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 [2022-07-21 09:02:53,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:02:53,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:02:53,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:02:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:02:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:02:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:02:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:02:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-21 09:02:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-21 09:02:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:02:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-21 09:02:53,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-21 09:02:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:02:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:02:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:02:53,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:02:53,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:02:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:02:53,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:02:53,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:02:53,208 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:02:53,360 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:02:53,361 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:02:53,687 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:02:53,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:02:53,765 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:02:53,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:02:53 BoogieIcfgContainer [2022-07-21 09:02:53,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:02:53,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:02:53,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:02:53,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:02:53,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:02:52" (1/3) ... [2022-07-21 09:02:53,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273cd7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:02:53, skipping insertion in model container [2022-07-21 09:02:53,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:53" (2/3) ... [2022-07-21 09:02:53,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273cd7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:02:53, skipping insertion in model container [2022-07-21 09:02:53,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:02:53" (3/3) ... [2022-07-21 09:02:53,781 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-07-21 09:02:53,786 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:02:53,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:02:53,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:02:53,794 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:02:53,862 INFO L135 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-07-21 09:02:53,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2022-07-21 09:02:53,967 INFO L129 PetriNetUnfolder]: 2/160 cut-off events. [2022-07-21 09:02:53,967 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-21 09:02:53,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-07-21 09:02:53,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2022-07-21 09:02:53,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2022-07-21 09:02:53,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:02:53,994 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@2ad7e248, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44f434f8 [2022-07-21 09:02:53,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 09:02:54,048 INFO L129 PetriNetUnfolder]: 2/144 cut-off events. [2022-07-21 09:02:54,049 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-21 09:02:54,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:54,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:54,051 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 3 more)] === [2022-07-21 09:02:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1882316905, now seen corresponding path program 1 times [2022-07-21 09:02:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:54,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143710324] [2022-07-21 09:02:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:55,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143710324] [2022-07-21 09:02:55,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143710324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:55,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:02:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60952517] [2022-07-21 09:02:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:02:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:02:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:02:55,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-07-21 09:02:55,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 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) [2022-07-21 09:02:55,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:55,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-07-21 09:02:55,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:00,888 INFO L129 PetriNetUnfolder]: 28398/43787 cut-off events. [2022-07-21 09:03:00,889 INFO L130 PetriNetUnfolder]: For 7195/7249 co-relation queries the response was YES. [2022-07-21 09:03:01,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86820 conditions, 43787 events. 28398/43787 cut-off events. For 7195/7249 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 331005 event pairs, 16376 based on Foata normal form. 4/42714 useless extension candidates. Maximal degree in co-relation 68872. Up to 12802 conditions per place. [2022-07-21 09:03:01,218 INFO L132 encePairwiseOnDemand]: 141/165 looper letters, 122 selfloop transitions, 27 changer transitions 26/267 dead transitions. [2022-07-21 09:03:01,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 267 transitions, 1004 flow [2022-07-21 09:03:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:03:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:03:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1957 transitions. [2022-07-21 09:03:01,243 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7412878787878788 [2022-07-21 09:03:01,244 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1957 transitions. [2022-07-21 09:03:01,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1957 transitions. [2022-07-21 09:03:01,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:01,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1957 transitions. [2022-07-21 09:03:01,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 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) [2022-07-21 09:03:01,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 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) [2022-07-21 09:03:01,271 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 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) [2022-07-21 09:03:01,273 INFO L186 Difference]: Start difference. First operand has 159 places, 145 transitions, 320 flow. Second operand 16 states and 1957 transitions. [2022-07-21 09:03:01,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 267 transitions, 1004 flow [2022-07-21 09:03:01,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 267 transitions, 924 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-21 09:03:01,354 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 479 flow [2022-07-21 09:03:01,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2022-07-21 09:03:01,361 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-07-21 09:03:01,362 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 479 flow [2022-07-21 09:03:01,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 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) [2022-07-21 09:03:01,363 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:01,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:01,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:03:01,364 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 3 more)] === [2022-07-21 09:03:01,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1644980583, now seen corresponding path program 2 times [2022-07-21 09:03:01,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977510124] [2022-07-21 09:03:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977510124] [2022-07-21 09:03:01,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977510124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:01,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:01,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:03:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785191573] [2022-07-21 09:03:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:03:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:01,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:03:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:03:01,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 165 [2022-07-21 09:03:01,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 479 flow. Second operand has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 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) [2022-07-21 09:03:01,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:01,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 165 [2022-07-21 09:03:01,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:05,520 INFO L129 PetriNetUnfolder]: 24946/42110 cut-off events. [2022-07-21 09:03:05,520 INFO L130 PetriNetUnfolder]: For 33867/33867 co-relation queries the response was YES. [2022-07-21 09:03:05,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107062 conditions, 42110 events. 24946/42110 cut-off events. For 33867/33867 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 368079 event pairs, 6868 based on Foata normal form. 1/41568 useless extension candidates. Maximal degree in co-relation 107043. Up to 22411 conditions per place. [2022-07-21 09:03:05,850 INFO L132 encePairwiseOnDemand]: 152/165 looper letters, 65 selfloop transitions, 16 changer transitions 47/226 dead transitions. [2022-07-21 09:03:05,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 226 transitions, 993 flow [2022-07-21 09:03:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:03:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:03:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1279 transitions. [2022-07-21 09:03:05,854 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7751515151515151 [2022-07-21 09:03:05,854 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1279 transitions. [2022-07-21 09:03:05,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1279 transitions. [2022-07-21 09:03:05,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:05,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1279 transitions. [2022-07-21 09:03:05,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.9) internal successors, (1279), 10 states have internal predecessors, (1279), 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) [2022-07-21 09:03:05,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2022-07-21 09:03:05,863 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2022-07-21 09:03:05,863 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 479 flow. Second operand 10 states and 1279 transitions. [2022-07-21 09:03:05,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 226 transitions, 993 flow [2022-07-21 09:03:05,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 226 transitions, 954 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-07-21 09:03:05,928 INFO L242 Difference]: Finished difference. Result has 172 places, 166 transitions, 546 flow [2022-07-21 09:03:05,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=546, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2022-07-21 09:03:05,929 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2022-07-21 09:03:05,930 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 546 flow [2022-07-21 09:03:05,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 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) [2022-07-21 09:03:05,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:05,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:03:05,931 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 3 more)] === [2022-07-21 09:03:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash -20893239, now seen corresponding path program 3 times [2022-07-21 09:03:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:05,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627354072] [2022-07-21 09:03:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:06,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627354072] [2022-07-21 09:03:06,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627354072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:06,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:06,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:03:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734805055] [2022-07-21 09:03:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:03:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:03:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:03:06,329 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-21 09:03:06,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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) [2022-07-21 09:03:06,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:06,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-21 09:03:06,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:08,438 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][203], [83#L131true, 41#L115true, 102#L74true, 43#L93true, 252#(<= (+ 3 ~s~0) ~t~0), Black: 225#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 236#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), 4#L161-2true, Black: 238#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~b~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 234#(and (= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 226#(and (= ~x~0 0) (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 221#true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0))]) [2022-07-21 09:03:08,439 INFO L384 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,439 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,439 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,439 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,440 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([491] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][165], [102#L74true, 43#L93true, 252#(<= (+ 3 ~s~0) ~t~0), Black: 225#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 236#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), 4#L161-2true, Black: 238#(and (= ~x~0 0) (<= ~b~0 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= 0 ~b~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 234#(and (= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), 74#L134true, Black: 226#(and (= ~x~0 0) (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), 221#true, Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 144#L112true]) [2022-07-21 09:03:08,441 INFO L384 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,441 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,441 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,441 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-07-21 09:03:08,537 INFO L129 PetriNetUnfolder]: 12828/21913 cut-off events. [2022-07-21 09:03:08,537 INFO L130 PetriNetUnfolder]: For 33297/39498 co-relation queries the response was YES. [2022-07-21 09:03:08,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61428 conditions, 21913 events. 12828/21913 cut-off events. For 33297/39498 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 178815 event pairs, 1705 based on Foata normal form. 179/20674 useless extension candidates. Maximal degree in co-relation 61405. Up to 5243 conditions per place. [2022-07-21 09:03:08,734 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 91 selfloop transitions, 58 changer transitions 1/270 dead transitions. [2022-07-21 09:03:08,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 270 transitions, 1169 flow [2022-07-21 09:03:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:03:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:03:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-07-21 09:03:08,738 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8163636363636364 [2022-07-21 09:03:08,739 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-07-21 09:03:08,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-07-21 09:03:08,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:08,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-07-21 09:03:08,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 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) [2022-07-21 09:03:08,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2022-07-21 09:03:08,746 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2022-07-21 09:03:08,746 INFO L186 Difference]: Start difference. First operand has 172 places, 166 transitions, 546 flow. Second operand 10 states and 1347 transitions. [2022-07-21 09:03:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 270 transitions, 1169 flow [2022-07-21 09:03:08,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 270 transitions, 1113 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-07-21 09:03:08,880 INFO L242 Difference]: Finished difference. Result has 170 places, 210 transitions, 755 flow [2022-07-21 09:03:08,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=170, PETRI_TRANSITIONS=210} [2022-07-21 09:03:08,881 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 11 predicate places. [2022-07-21 09:03:08,881 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 210 transitions, 755 flow [2022-07-21 09:03:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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) [2022-07-21 09:03:08,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:08,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:03:08,883 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 3 more)] === [2022-07-21 09:03:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1237697543, now seen corresponding path program 4 times [2022-07-21 09:03:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:08,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666750754] [2022-07-21 09:03:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:09,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666750754] [2022-07-21 09:03:09,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666750754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:09,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:09,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:03:09,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865178842] [2022-07-21 09:03:09,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:09,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:03:09,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:03:09,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:03:09,069 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-21 09:03:09,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 210 transitions, 755 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2022-07-21 09:03:09,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:09,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-21 09:03:09,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:12,550 INFO L129 PetriNetUnfolder]: 19708/36361 cut-off events. [2022-07-21 09:03:12,550 INFO L130 PetriNetUnfolder]: For 35577/40132 co-relation queries the response was YES. [2022-07-21 09:03:12,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102740 conditions, 36361 events. 19708/36361 cut-off events. For 35577/40132 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 351244 event pairs, 3177 based on Foata normal form. 1042/35572 useless extension candidates. Maximal degree in co-relation 70859. Up to 8597 conditions per place. [2022-07-21 09:03:12,925 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 124 selfloop transitions, 93 changer transitions 0/337 dead transitions. [2022-07-21 09:03:12,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 337 transitions, 1732 flow [2022-07-21 09:03:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:03:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 09:03:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1092 transitions. [2022-07-21 09:03:12,931 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8272727272727273 [2022-07-21 09:03:12,931 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1092 transitions. [2022-07-21 09:03:12,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1092 transitions. [2022-07-21 09:03:12,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:12,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1092 transitions. [2022-07-21 09:03:12,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.5) internal successors, (1092), 8 states have internal predecessors, (1092), 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) [2022-07-21 09:03:12,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2022-07-21 09:03:12,940 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2022-07-21 09:03:12,940 INFO L186 Difference]: Start difference. First operand has 170 places, 210 transitions, 755 flow. Second operand 8 states and 1092 transitions. [2022-07-21 09:03:12,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 337 transitions, 1732 flow [2022-07-21 09:03:12,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 337 transitions, 1616 flow, removed 53 selfloop flow, removed 3 redundant places. [2022-07-21 09:03:13,000 INFO L242 Difference]: Finished difference. Result has 177 places, 278 transitions, 1369 flow [2022-07-21 09:03:13,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=177, PETRI_TRANSITIONS=278} [2022-07-21 09:03:13,001 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-07-21 09:03:13,002 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 278 transitions, 1369 flow [2022-07-21 09:03:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2022-07-21 09:03:13,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:13,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:03:13,003 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 3 more)] === [2022-07-21 09:03:13,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1248837477, now seen corresponding path program 5 times [2022-07-21 09:03:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:13,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711245089] [2022-07-21 09:03:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:13,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:13,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711245089] [2022-07-21 09:03:13,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711245089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:13,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:13,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:03:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227653101] [2022-07-21 09:03:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:03:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:03:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:03:13,159 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-21 09:03:13,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 278 transitions, 1369 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2022-07-21 09:03:13,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:13,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-21 09:03:13,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:17,639 INFO L129 PetriNetUnfolder]: 24360/46775 cut-off events. [2022-07-21 09:03:17,639 INFO L130 PetriNetUnfolder]: For 79274/85302 co-relation queries the response was YES. [2022-07-21 09:03:17,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152278 conditions, 46775 events. 24360/46775 cut-off events. For 79274/85302 co-relation queries the response was YES. Maximal size of possible extension queue 2810. Compared 490844 event pairs, 5113 based on Foata normal form. 2184/47293 useless extension candidates. Maximal degree in co-relation 102772. Up to 12620 conditions per place. [2022-07-21 09:03:18,321 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 185 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2022-07-21 09:03:18,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 402 transitions, 2711 flow [2022-07-21 09:03:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:03:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:03:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-07-21 09:03:18,324 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-21 09:03:18,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-07-21 09:03:18,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-07-21 09:03:18,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:18,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-07-21 09:03:18,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 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) [2022-07-21 09:03:18,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2022-07-21 09:03:18,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2022-07-21 09:03:18,330 INFO L186 Difference]: Start difference. First operand has 177 places, 278 transitions, 1369 flow. Second operand 7 states and 946 transitions. [2022-07-21 09:03:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 402 transitions, 2711 flow [2022-07-21 09:03:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 402 transitions, 2680 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-07-21 09:03:18,798 INFO L242 Difference]: Finished difference. Result has 183 places, 347 transitions, 2336 flow [2022-07-21 09:03:18,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=183, PETRI_TRANSITIONS=347} [2022-07-21 09:03:18,799 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 24 predicate places. [2022-07-21 09:03:18,800 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 347 transitions, 2336 flow [2022-07-21 09:03:18,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2022-07-21 09:03:18,800 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:18,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:18,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:03:18,801 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 3 more)] === [2022-07-21 09:03:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1915477697, now seen corresponding path program 6 times [2022-07-21 09:03:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:18,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603529213] [2022-07-21 09:03:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603529213] [2022-07-21 09:03:18,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603529213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:18,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:18,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:03:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841233251] [2022-07-21 09:03:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:18,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:03:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:03:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:03:18,951 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-21 09:03:18,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 347 transitions, 2336 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2022-07-21 09:03:18,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:18,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-21 09:03:18,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:23,408 INFO L129 PetriNetUnfolder]: 24137/44532 cut-off events. [2022-07-21 09:03:23,408 INFO L130 PetriNetUnfolder]: For 145965/156223 co-relation queries the response was YES. [2022-07-21 09:03:23,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171952 conditions, 44532 events. 24137/44532 cut-off events. For 145965/156223 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 446557 event pairs, 4378 based on Foata normal form. 3041/45495 useless extension candidates. Maximal degree in co-relation 97811. Up to 11460 conditions per place. [2022-07-21 09:03:24,014 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 127 selfloop transitions, 188 changer transitions 0/435 dead transitions. [2022-07-21 09:03:24,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 435 transitions, 3496 flow [2022-07-21 09:03:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:03:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 09:03:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1094 transitions. [2022-07-21 09:03:24,018 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8287878787878787 [2022-07-21 09:03:24,018 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1094 transitions. [2022-07-21 09:03:24,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1094 transitions. [2022-07-21 09:03:24,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:24,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1094 transitions. [2022-07-21 09:03:24,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.75) internal successors, (1094), 8 states have internal predecessors, (1094), 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) [2022-07-21 09:03:24,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2022-07-21 09:03:24,025 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2022-07-21 09:03:24,025 INFO L186 Difference]: Start difference. First operand has 183 places, 347 transitions, 2336 flow. Second operand 8 states and 1094 transitions. [2022-07-21 09:03:24,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 435 transitions, 3496 flow [2022-07-21 09:03:24,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 435 transitions, 3482 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-21 09:03:24,669 INFO L242 Difference]: Finished difference. Result has 189 places, 374 transitions, 3029 flow [2022-07-21 09:03:24,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3029, PETRI_PLACES=189, PETRI_TRANSITIONS=374} [2022-07-21 09:03:24,671 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 30 predicate places. [2022-07-21 09:03:24,671 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 374 transitions, 3029 flow [2022-07-21 09:03:24,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2022-07-21 09:03:24,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:24,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:03:24,672 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 3 more)] === [2022-07-21 09:03:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash -721923245, now seen corresponding path program 7 times [2022-07-21 09:03:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:24,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288170211] [2022-07-21 09:03:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:24,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:24,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288170211] [2022-07-21 09:03:24,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288170211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:24,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:24,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:03:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315131801] [2022-07-21 09:03:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:24,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:03:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:03:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:03:24,785 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-21 09:03:24,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 374 transitions, 3029 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2022-07-21 09:03:24,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:24,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-21 09:03:24,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:29,658 INFO L129 PetriNetUnfolder]: 23813/45619 cut-off events. [2022-07-21 09:03:29,658 INFO L130 PetriNetUnfolder]: For 197650/204698 co-relation queries the response was YES. [2022-07-21 09:03:30,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190453 conditions, 45619 events. 23813/45619 cut-off events. For 197650/204698 co-relation queries the response was YES. Maximal size of possible extension queue 2707. Compared 476782 event pairs, 5423 based on Foata normal form. 2272/46063 useless extension candidates. Maximal degree in co-relation 128067. Up to 12058 conditions per place. [2022-07-21 09:03:30,417 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 188 selfloop transitions, 143 changer transitions 0/451 dead transitions. [2022-07-21 09:03:30,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 451 transitions, 4279 flow [2022-07-21 09:03:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:03:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:03:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2022-07-21 09:03:30,420 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-07-21 09:03:30,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2022-07-21 09:03:30,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2022-07-21 09:03:30,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:30,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2022-07-21 09:03:30,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 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) [2022-07-21 09:03:30,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2022-07-21 09:03:30,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2022-07-21 09:03:30,426 INFO L186 Difference]: Start difference. First operand has 189 places, 374 transitions, 3029 flow. Second operand 7 states and 945 transitions. [2022-07-21 09:03:30,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 451 transitions, 4279 flow [2022-07-21 09:03:30,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 451 transitions, 3995 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-21 09:03:30,791 INFO L242 Difference]: Finished difference. Result has 192 places, 399 transitions, 3493 flow [2022-07-21 09:03:30,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3493, PETRI_PLACES=192, PETRI_TRANSITIONS=399} [2022-07-21 09:03:30,792 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 33 predicate places. [2022-07-21 09:03:30,792 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 399 transitions, 3493 flow [2022-07-21 09:03:30,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2022-07-21 09:03:30,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:30,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:03:30,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:03:30,793 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 3 more)] === [2022-07-21 09:03:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash 184752153, now seen corresponding path program 8 times [2022-07-21 09:03:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:30,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008855192] [2022-07-21 09:03:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:30,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008855192] [2022-07-21 09:03:30,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008855192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:03:30,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:03:30,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:03:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238863493] [2022-07-21 09:03:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:03:30,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:03:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:03:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:03:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:03:30,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-07-21 09:03:30,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 399 transitions, 3493 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2022-07-21 09:03:30,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:03:30,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-07-21 09:03:30,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand