./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/chl-simpl-str-subst.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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:25:04,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:25:04,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:25:04,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:25:04,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:25:04,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:25:04,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:25:04,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:25:04,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:25:04,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:25:04,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:25:04,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:25:04,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:25:04,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:25:04,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:25:04,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:25:04,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:25:04,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:25:04,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:25:04,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:25:04,719 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:25:04,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:25:04,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:25:04,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:25:04,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:25:04,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:25:04,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:25:04,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:25:04,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:25:04,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:25:04,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:25:04,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:25:04,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:25:04,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:25:04,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:25:04,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:25:04,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:25:04,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:25:04,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:25:04,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:25:04,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:25:04,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:25:04,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:25:04,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:25:04,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:25:04,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:25:04,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:25:04,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:25:04,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:25:04,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:25:04,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:25:04,773 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:25:04,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:25:04,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:25:04,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:25:04,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:25:04,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:25:04,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:25:04,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:25:04,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:25:04,775 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:25:04,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:25:04,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:25:04,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:25:04,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:25:04,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:25:04,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:25:04,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:04,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:25:04,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:25:04,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:25:04,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:25:04,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:25:04,778 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:25:04,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:25:04,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:25:04,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-07-12 10:25:05,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:25:05,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:25:05,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:25:05,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:25:05,049 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:25:05,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-12 10:25:05,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f5dccad6/027665969ce042d294b54d5aff7f4aa3/FLAG0bad31659 [2022-07-12 10:25:05,427 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:25:05,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-12 10:25:05,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f5dccad6/027665969ce042d294b54d5aff7f4aa3/FLAG0bad31659 [2022-07-12 10:25:05,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f5dccad6/027665969ce042d294b54d5aff7f4aa3 [2022-07-12 10:25:05,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:25:05,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:25:05,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:05,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:25:05,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:25:05,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:05" (1/1) ... [2022-07-12 10:25:05,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1d9725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:05, skipping insertion in model container [2022-07-12 10:25:05,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:05" (1/1) ... [2022-07-12 10:25:05,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:25:05,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:25:05,999 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/chl-simpl-str-subst.wvr.c[2575,2588] [2022-07-12 10:25:06,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:06,017 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:25:06,035 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/chl-simpl-str-subst.wvr.c[2575,2588] [2022-07-12 10:25:06,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:06,048 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:25:06,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06 WrapperNode [2022-07-12 10:25:06,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:06,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:06,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:25:06,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:25:06,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,083 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-07-12 10:25:06,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:06,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:25:06,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:25:06,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:25:06,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:25:06,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:25:06,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:25:06,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:25:06,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (1/1) ... [2022-07-12 10:25:06,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:06,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:25:06,158 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) [2022-07-12 10:25:06,168 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 [2022-07-12 10:25:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:25:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:25:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:25:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:25:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:25:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:25:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:25:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:25:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:25:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:25:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:25:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:25:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:25:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:25:06,200 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:25:06,323 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:25:06,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:25:06,653 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:25:06,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:25:06,663 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:25:06,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:06 BoogieIcfgContainer [2022-07-12 10:25:06,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:25:06,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:25:06,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:25:06,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:25:06,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:25:05" (1/3) ... [2022-07-12 10:25:06,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ecd90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:06, skipping insertion in model container [2022-07-12 10:25:06,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:06" (2/3) ... [2022-07-12 10:25:06,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ecd90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:06, skipping insertion in model container [2022-07-12 10:25:06,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:06" (3/3) ... [2022-07-12 10:25:06,673 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-07-12 10:25:06,677 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:25:06,685 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:25:06,685 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:25:06,685 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:25:06,766 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:25:06,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-07-12 10:25:06,902 INFO L129 PetriNetUnfolder]: 17/232 cut-off events. [2022-07-12 10:25:06,902 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:06,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 510 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-12 10:25:06,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2022-07-12 10:25:06,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2022-07-12 10:25:06,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:25:06,948 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@420f9c15, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40032967 [2022-07-12 10:25:06,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:25:07,020 INFO L129 PetriNetUnfolder]: 17/220 cut-off events. [2022-07-12 10:25:07,020 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:07,021 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:07,021 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] [2022-07-12 10:25:07,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1711885606, now seen corresponding path program 1 times [2022-07-12 10:25:07,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:07,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419341112] [2022-07-12 10:25:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:07,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419341112] [2022-07-12 10:25:07,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419341112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:07,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:07,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:07,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032906665] [2022-07-12 10:25:07,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:07,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:07,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:07,430 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-12 10:25:07,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-07-12 10:25:07,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:07,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-12 10:25:07,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:07,629 INFO L129 PetriNetUnfolder]: 84/1006 cut-off events. [2022-07-12 10:25:07,630 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-07-12 10:25:07,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1006 events. 84/1006 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7154 event pairs, 22 based on Foata normal form. 68/984 useless extension candidates. Maximal degree in co-relation 999. Up to 73 conditions per place. [2022-07-12 10:25:07,645 INFO L132 encePairwiseOnDemand]: 219/235 looper letters, 20 selfloop transitions, 4 changer transitions 2/221 dead transitions. [2022-07-12 10:25:07,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 520 flow [2022-07-12 10:25:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-07-12 10:25:07,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.950354609929078 [2022-07-12 10:25:07,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-07-12 10:25:07,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-07-12 10:25:07,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:07,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-07-12 10:25:07,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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) [2022-07-12 10:25:07,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:07,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:07,700 INFO L186 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 670 transitions. [2022-07-12 10:25:07,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 520 flow [2022-07-12 10:25:07,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 221 transitions, 500 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:25:07,711 INFO L242 Difference]: Finished difference. Result has 212 places, 215 transitions, 468 flow [2022-07-12 10:25:07,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2022-07-12 10:25:07,716 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-12 10:25:07,717 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 468 flow [2022-07-12 10:25:07,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-07-12 10:25:07,718 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:07,718 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] [2022-07-12 10:25:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:25:07,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1537026462, now seen corresponding path program 1 times [2022-07-12 10:25:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:07,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681037945] [2022-07-12 10:25:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:07,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:07,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681037945] [2022-07-12 10:25:07,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681037945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:07,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:07,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:07,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255835626] [2022-07-12 10:25:07,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:07,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:07,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-12 10:25:07,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2022-07-12 10:25:07,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:07,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-12 10:25:07,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:08,063 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-12 10:25:08,064 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-12 10:25:08,064 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-12 10:25:08,083 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-12 10:25:08,084 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-12 10:25:08,084 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-12 10:25:08,085 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-12 10:25:08,085 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-12 10:25:08,085 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-12 10:25:08,085 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-12 10:25:08,085 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-07-12 10:25:08,088 INFO L382 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-12 10:25:08,088 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-07-12 10:25:08,088 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-12 10:25:08,088 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-12 10:25:08,088 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-12 10:25:08,089 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-12 10:25:08,089 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-12 10:25:08,098 INFO L129 PetriNetUnfolder]: 96/2144 cut-off events. [2022-07-12 10:25:08,098 INFO L130 PetriNetUnfolder]: For 85/89 co-relation queries the response was YES. [2022-07-12 10:25:08,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 2144 events. 96/2144 cut-off events. For 85/89 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21163 event pairs, 28 based on Foata normal form. 0/1986 useless extension candidates. Maximal degree in co-relation 1296. Up to 89 conditions per place. [2022-07-12 10:25:08,115 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 19 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2022-07-12 10:25:08,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 223 transitions, 533 flow [2022-07-12 10:25:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-12 10:25:08,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-12 10:25:08,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-12 10:25:08,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-12 10:25:08,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:08,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-12 10:25:08,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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) [2022-07-12 10:25:08,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:08,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:08,123 INFO L186 Difference]: Start difference. First operand has 212 places, 215 transitions, 468 flow. Second operand 3 states and 661 transitions. [2022-07-12 10:25:08,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 223 transitions, 533 flow [2022-07-12 10:25:08,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 223 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:08,135 INFO L242 Difference]: Finished difference. Result has 213 places, 218 transitions, 494 flow [2022-07-12 10:25:08,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=213, PETRI_TRANSITIONS=218} [2022-07-12 10:25:08,136 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -1 predicate places. [2022-07-12 10:25:08,137 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 218 transitions, 494 flow [2022-07-12 10:25:08,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2022-07-12 10:25:08,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:08,138 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] [2022-07-12 10:25:08,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:25:08,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:08,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1414919130, now seen corresponding path program 2 times [2022-07-12 10:25:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:08,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564821594] [2022-07-12 10:25:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:08,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:08,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:08,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564821594] [2022-07-12 10:25:08,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564821594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:08,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:08,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:08,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384458221] [2022-07-12 10:25:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:08,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:08,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:08,215 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-12 10:25:08,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 218 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2022-07-12 10:25:08,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:08,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-12 10:25:08,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:08,471 INFO L129 PetriNetUnfolder]: 80/1827 cut-off events. [2022-07-12 10:25:08,471 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-07-12 10:25:08,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 1827 events. 80/1827 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16400 event pairs, 28 based on Foata normal form. 7/1684 useless extension candidates. Maximal degree in co-relation 1309. Up to 78 conditions per place. [2022-07-12 10:25:08,487 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 20 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-07-12 10:25:08,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 226 transitions, 571 flow [2022-07-12 10:25:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-12 10:25:08,490 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-12 10:25:08,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-12 10:25:08,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-12 10:25:08,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:08,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-12 10:25:08,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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) [2022-07-12 10:25:08,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:08,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:08,495 INFO L186 Difference]: Start difference. First operand has 213 places, 218 transitions, 494 flow. Second operand 3 states and 661 transitions. [2022-07-12 10:25:08,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 226 transitions, 571 flow [2022-07-12 10:25:08,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 226 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:08,500 INFO L242 Difference]: Finished difference. Result has 216 places, 221 transitions, 535 flow [2022-07-12 10:25:08,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=216, PETRI_TRANSITIONS=221} [2022-07-12 10:25:08,504 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 2 predicate places. [2022-07-12 10:25:08,504 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 221 transitions, 535 flow [2022-07-12 10:25:08,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2022-07-12 10:25:08,505 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:08,505 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] [2022-07-12 10:25:08,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:25:08,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1873849952, now seen corresponding path program 1 times [2022-07-12 10:25:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149466212] [2022-07-12 10:25:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:08,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149466212] [2022-07-12 10:25:08,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149466212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:08,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:08,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:08,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72377244] [2022-07-12 10:25:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:08,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:08,583 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-12 10:25:08,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 221 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2022-07-12 10:25:08,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:08,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-12 10:25:08,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:08,900 INFO L129 PetriNetUnfolder]: 96/3140 cut-off events. [2022-07-12 10:25:08,901 INFO L130 PetriNetUnfolder]: For 98/131 co-relation queries the response was YES. [2022-07-12 10:25:08,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 3140 events. 96/3140 cut-off events. For 98/131 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 34386 event pairs, 33 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 2319. Up to 121 conditions per place. [2022-07-12 10:25:08,924 INFO L132 encePairwiseOnDemand]: 231/235 looper letters, 17 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2022-07-12 10:25:08,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 592 flow [2022-07-12 10:25:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-12 10:25:08,930 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-12 10:25:08,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-12 10:25:08,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-12 10:25:08,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:08,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-12 10:25:08,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2022-07-12 10:25:08,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:08,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:08,935 INFO L186 Difference]: Start difference. First operand has 216 places, 221 transitions, 535 flow. Second operand 3 states and 663 transitions. [2022-07-12 10:25:08,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 592 flow [2022-07-12 10:25:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 576 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:08,942 INFO L242 Difference]: Finished difference. Result has 218 places, 223 transitions, 539 flow [2022-07-12 10:25:08,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2022-07-12 10:25:08,943 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-07-12 10:25:08,944 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 539 flow [2022-07-12 10:25:08,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2022-07-12 10:25:08,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:08,945 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] [2022-07-12 10:25:08,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:25:08,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1926563626, now seen corresponding path program 1 times [2022-07-12 10:25:08,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:08,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33144017] [2022-07-12 10:25:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:09,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33144017] [2022-07-12 10:25:09,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33144017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:09,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:09,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508862423] [2022-07-12 10:25:09,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:09,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:09,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:09,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-12 10:25:09,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-07-12 10:25:09,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:09,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-12 10:25:09,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:09,292 INFO L129 PetriNetUnfolder]: 130/2353 cut-off events. [2022-07-12 10:25:09,293 INFO L130 PetriNetUnfolder]: For 139/233 co-relation queries the response was YES. [2022-07-12 10:25:09,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 2353 events. 130/2353 cut-off events. For 139/233 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21882 event pairs, 33 based on Foata normal form. 4/2183 useless extension candidates. Maximal degree in co-relation 1425. Up to 137 conditions per place. [2022-07-12 10:25:09,309 INFO L132 encePairwiseOnDemand]: 225/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-07-12 10:25:09,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 231 transitions, 623 flow [2022-07-12 10:25:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-07-12 10:25:09,312 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-07-12 10:25:09,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-07-12 10:25:09,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-07-12 10:25:09,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:09,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-07-12 10:25:09,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-07-12 10:25:09,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:09,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:09,318 INFO L186 Difference]: Start difference. First operand has 218 places, 223 transitions, 539 flow. Second operand 3 states and 658 transitions. [2022-07-12 10:25:09,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 231 transitions, 623 flow [2022-07-12 10:25:09,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:09,325 INFO L242 Difference]: Finished difference. Result has 221 places, 227 transitions, 593 flow [2022-07-12 10:25:09,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=221, PETRI_TRANSITIONS=227} [2022-07-12 10:25:09,328 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 7 predicate places. [2022-07-12 10:25:09,328 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 227 transitions, 593 flow [2022-07-12 10:25:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-07-12 10:25:09,329 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:09,329 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] [2022-07-12 10:25:09,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:25:09,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1437708392, now seen corresponding path program 1 times [2022-07-12 10:25:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:09,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260622107] [2022-07-12 10:25:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:09,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:09,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260622107] [2022-07-12 10:25:09,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260622107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:09,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:09,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:25:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238429397] [2022-07-12 10:25:09,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:09,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:25:09,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:25:09,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:25:09,491 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-12 10:25:09,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 227 transitions, 593 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 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) [2022-07-12 10:25:09,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:09,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-12 10:25:09,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:09,801 INFO L129 PetriNetUnfolder]: 114/2103 cut-off events. [2022-07-12 10:25:09,802 INFO L130 PetriNetUnfolder]: For 155/421 co-relation queries the response was YES. [2022-07-12 10:25:09,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 2103 events. 114/2103 cut-off events. For 155/421 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19801 event pairs, 40 based on Foata normal form. 5/1993 useless extension candidates. Maximal degree in co-relation 1946. Up to 199 conditions per place. [2022-07-12 10:25:09,820 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 21 selfloop transitions, 0 changer transitions 22/247 dead transitions. [2022-07-12 10:25:09,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 247 transitions, 730 flow [2022-07-12 10:25:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:25:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:25:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-12 10:25:09,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-12 10:25:09,824 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-12 10:25:09,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-12 10:25:09,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:09,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-12 10:25:09,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 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) [2022-07-12 10:25:09,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2022-07-12 10:25:09,834 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2022-07-12 10:25:09,834 INFO L186 Difference]: Start difference. First operand has 221 places, 227 transitions, 593 flow. Second operand 9 states and 1861 transitions. [2022-07-12 10:25:09,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 247 transitions, 730 flow [2022-07-12 10:25:09,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 710 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:09,840 INFO L242 Difference]: Finished difference. Result has 234 places, 225 transitions, 579 flow [2022-07-12 10:25:09,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2022-07-12 10:25:09,841 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-12 10:25:09,841 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 579 flow [2022-07-12 10:25:09,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 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) [2022-07-12 10:25:09,842 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:09,842 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] [2022-07-12 10:25:09,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:25:09,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash 169299696, now seen corresponding path program 1 times [2022-07-12 10:25:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:09,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796802529] [2022-07-12 10:25:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:09,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796802529] [2022-07-12 10:25:09,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796802529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:09,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:09,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421013069] [2022-07-12 10:25:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:09,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:09,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:09,876 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-12 10:25:09,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 579 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2022-07-12 10:25:09,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:09,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-12 10:25:09,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:10,036 INFO L129 PetriNetUnfolder]: 46/1393 cut-off events. [2022-07-12 10:25:10,036 INFO L130 PetriNetUnfolder]: For 47/57 co-relation queries the response was YES. [2022-07-12 10:25:10,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1393 events. 46/1393 cut-off events. For 47/57 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10719 event pairs, 7 based on Foata normal form. 0/1307 useless extension candidates. Maximal degree in co-relation 1706. Up to 45 conditions per place. [2022-07-12 10:25:10,050 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 17 selfloop transitions, 4 changer transitions 1/232 dead transitions. [2022-07-12 10:25:10,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 644 flow [2022-07-12 10:25:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-12 10:25:10,052 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-12 10:25:10,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-12 10:25:10,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-12 10:25:10,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:10,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-12 10:25:10,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2022-07-12 10:25:10,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:10,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2022-07-12 10:25:10,057 INFO L186 Difference]: Start difference. First operand has 234 places, 225 transitions, 579 flow. Second operand 3 states and 663 transitions. [2022-07-12 10:25:10,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 644 flow [2022-07-12 10:25:10,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 232 transitions, 630 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-12 10:25:10,062 INFO L242 Difference]: Finished difference. Result has 224 places, 226 transitions, 593 flow [2022-07-12 10:25:10,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2022-07-12 10:25:10,063 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 10 predicate places. [2022-07-12 10:25:10,063 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 593 flow [2022-07-12 10:25:10,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2022-07-12 10:25:10,064 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:10,064 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] [2022-07-12 10:25:10,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:25:10,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash -68732316, now seen corresponding path program 1 times [2022-07-12 10:25:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:10,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178148914] [2022-07-12 10:25:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:10,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:10,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178148914] [2022-07-12 10:25:10,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178148914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:10,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:10,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13153706] [2022-07-12 10:25:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:10,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:10,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 593 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:10,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:10,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:10,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:10,860 INFO L129 PetriNetUnfolder]: 913/3930 cut-off events. [2022-07-12 10:25:10,860 INFO L130 PetriNetUnfolder]: For 297/395 co-relation queries the response was YES. [2022-07-12 10:25:10,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 3930 events. 913/3930 cut-off events. For 297/395 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 39116 event pairs, 592 based on Foata normal form. 2/3714 useless extension candidates. Maximal degree in co-relation 6102. Up to 1296 conditions per place. [2022-07-12 10:25:10,893 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 76 selfloop transitions, 30 changer transitions 28/330 dead transitions. [2022-07-12 10:25:10,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 330 transitions, 1102 flow [2022-07-12 10:25:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-07-12 10:25:10,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2022-07-12 10:25:10,903 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-07-12 10:25:10,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-07-12 10:25:10,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:10,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-07-12 10:25:10,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 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) [2022-07-12 10:25:10,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 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) [2022-07-12 10:25:10,924 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 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) [2022-07-12 10:25:10,924 INFO L186 Difference]: Start difference. First operand has 224 places, 226 transitions, 593 flow. Second operand 24 states and 4791 transitions. [2022-07-12 10:25:10,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 330 transitions, 1102 flow [2022-07-12 10:25:10,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 330 transitions, 1090 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:10,930 INFO L242 Difference]: Finished difference. Result has 264 places, 255 transitions, 797 flow [2022-07-12 10:25:10,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=797, PETRI_PLACES=264, PETRI_TRANSITIONS=255} [2022-07-12 10:25:10,932 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 50 predicate places. [2022-07-12 10:25:10,932 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 797 flow [2022-07-12 10:25:10,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:10,933 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:10,933 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] [2022-07-12 10:25:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:10,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1664128876, now seen corresponding path program 2 times [2022-07-12 10:25:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:10,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43700742] [2022-07-12 10:25:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:10,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43700742] [2022-07-12 10:25:11,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43700742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:11,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539035516] [2022-07-12 10:25:11,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:11,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:11,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:11,070 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:11,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 255 transitions, 797 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:11,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:11,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:11,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:11,782 INFO L129 PetriNetUnfolder]: 1027/3970 cut-off events. [2022-07-12 10:25:11,782 INFO L130 PetriNetUnfolder]: For 3975/4061 co-relation queries the response was YES. [2022-07-12 10:25:11,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9765 conditions, 3970 events. 1027/3970 cut-off events. For 3975/4061 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39317 event pairs, 641 based on Foata normal form. 2/3741 useless extension candidates. Maximal degree in co-relation 9735. Up to 1500 conditions per place. [2022-07-12 10:25:11,824 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 68 selfloop transitions, 45 changer transitions 19/328 dead transitions. [2022-07-12 10:25:11,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 328 transitions, 1448 flow [2022-07-12 10:25:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2022-07-12 10:25:11,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2022-07-12 10:25:11,832 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2022-07-12 10:25:11,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2022-07-12 10:25:11,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:11,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2022-07-12 10:25:11,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.4) internal successors, (3988), 20 states have internal predecessors, (3988), 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) [2022-07-12 10:25:11,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 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) [2022-07-12 10:25:11,850 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 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) [2022-07-12 10:25:11,850 INFO L186 Difference]: Start difference. First operand has 264 places, 255 transitions, 797 flow. Second operand 20 states and 3988 transitions. [2022-07-12 10:25:11,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 328 transitions, 1448 flow [2022-07-12 10:25:11,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 328 transitions, 1442 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:11,889 INFO L242 Difference]: Finished difference. Result has 294 places, 287 transitions, 1215 flow [2022-07-12 10:25:11,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-07-12 10:25:11,890 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 80 predicate places. [2022-07-12 10:25:11,891 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1215 flow [2022-07-12 10:25:11,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:11,892 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:11,892 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] [2022-07-12 10:25:11,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:25:11,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash -112561332, now seen corresponding path program 3 times [2022-07-12 10:25:11,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:11,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990669969] [2022-07-12 10:25:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990669969] [2022-07-12 10:25:11,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990669969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637200308] [2022-07-12 10:25:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:11,994 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:12,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:12,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:12,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:12,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:12,951 INFO L129 PetriNetUnfolder]: 1070/4236 cut-off events. [2022-07-12 10:25:12,951 INFO L130 PetriNetUnfolder]: For 8483/8578 co-relation queries the response was YES. [2022-07-12 10:25:12,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12265 conditions, 4236 events. 1070/4236 cut-off events. For 8483/8578 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42876 event pairs, 674 based on Foata normal form. 5/4009 useless extension candidates. Maximal degree in co-relation 12221. Up to 1603 conditions per place. [2022-07-12 10:25:13,003 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 110 selfloop transitions, 42 changer transitions 22/370 dead transitions. [2022-07-12 10:25:13,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 370 transitions, 2169 flow [2022-07-12 10:25:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2022-07-12 10:25:13,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2022-07-12 10:25:13,012 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2022-07-12 10:25:13,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2022-07-12 10:25:13,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:13,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2022-07-12 10:25:13,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.6) internal successors, (3992), 20 states have internal predecessors, (3992), 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) [2022-07-12 10:25:13,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 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) [2022-07-12 10:25:13,029 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 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) [2022-07-12 10:25:13,029 INFO L186 Difference]: Start difference. First operand has 294 places, 287 transitions, 1215 flow. Second operand 20 states and 3992 transitions. [2022-07-12 10:25:13,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 370 transitions, 2169 flow [2022-07-12 10:25:13,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 370 transitions, 1921 flow, removed 124 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:13,114 INFO L242 Difference]: Finished difference. Result has 324 places, 319 transitions, 1549 flow [2022-07-12 10:25:13,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1549, PETRI_PLACES=324, PETRI_TRANSITIONS=319} [2022-07-12 10:25:13,115 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 110 predicate places. [2022-07-12 10:25:13,115 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 319 transitions, 1549 flow [2022-07-12 10:25:13,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:13,116 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:13,116 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] [2022-07-12 10:25:13,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:13,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1317235276, now seen corresponding path program 4 times [2022-07-12 10:25:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824624494] [2022-07-12 10:25:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:13,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:13,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824624494] [2022-07-12 10:25:13,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824624494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:13,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:13,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781625362] [2022-07-12 10:25:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:13,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:13,208 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:13,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 319 transitions, 1549 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:13,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:13,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:13,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:14,298 INFO L129 PetriNetUnfolder]: 1115/4455 cut-off events. [2022-07-12 10:25:14,299 INFO L130 PetriNetUnfolder]: For 10480/10587 co-relation queries the response was YES. [2022-07-12 10:25:14,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13266 conditions, 4455 events. 1115/4455 cut-off events. For 10480/10587 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46287 event pairs, 620 based on Foata normal form. 5/4240 useless extension candidates. Maximal degree in co-relation 13208. Up to 1410 conditions per place. [2022-07-12 10:25:14,353 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 76 changer transitions 26/439 dead transitions. [2022-07-12 10:25:14,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 2943 flow [2022-07-12 10:25:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2022-07-12 10:25:14,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-12 10:25:14,362 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2022-07-12 10:25:14,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2022-07-12 10:25:14,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:14,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2022-07-12 10:25:14,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.5) internal successors, (4788), 24 states have internal predecessors, (4788), 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) [2022-07-12 10:25:14,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 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) [2022-07-12 10:25:14,390 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 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) [2022-07-12 10:25:14,390 INFO L186 Difference]: Start difference. First operand has 324 places, 319 transitions, 1549 flow. Second operand 24 states and 4788 transitions. [2022-07-12 10:25:14,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 2943 flow [2022-07-12 10:25:14,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 439 transitions, 2735 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:14,493 INFO L242 Difference]: Finished difference. Result has 363 places, 348 transitions, 2075 flow [2022-07-12 10:25:14,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=363, PETRI_TRANSITIONS=348} [2022-07-12 10:25:14,494 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 149 predicate places. [2022-07-12 10:25:14,494 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 348 transitions, 2075 flow [2022-07-12 10:25:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:14,495 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:14,496 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] [2022-07-12 10:25:14,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:25:14,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash -795685710, now seen corresponding path program 5 times [2022-07-12 10:25:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:14,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538169849] [2022-07-12 10:25:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:14,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:14,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:14,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538169849] [2022-07-12 10:25:14,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538169849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:14,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:14,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592754120] [2022-07-12 10:25:14,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:14,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:14,622 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:14,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 348 transitions, 2075 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:14,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:14,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:14,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,738 INFO L129 PetriNetUnfolder]: 1220/4858 cut-off events. [2022-07-12 10:25:15,739 INFO L130 PetriNetUnfolder]: For 16315/16413 co-relation queries the response was YES. [2022-07-12 10:25:15,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16034 conditions, 4858 events. 1220/4858 cut-off events. For 16315/16413 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 51108 event pairs, 692 based on Foata normal form. 4/4628 useless extension candidates. Maximal degree in co-relation 15957. Up to 1643 conditions per place. [2022-07-12 10:25:15,807 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 86 changer transitions 24/436 dead transitions. [2022-07-12 10:25:15,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 436 transitions, 3369 flow [2022-07-12 10:25:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2022-07-12 10:25:15,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2022-07-12 10:25:15,814 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2022-07-12 10:25:15,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2022-07-12 10:25:15,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2022-07-12 10:25:15,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.3181818181818) internal successors, (4385), 22 states have internal predecessors, (4385), 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) [2022-07-12 10:25:15,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 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) [2022-07-12 10:25:15,829 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 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) [2022-07-12 10:25:15,829 INFO L186 Difference]: Start difference. First operand has 363 places, 348 transitions, 2075 flow. Second operand 22 states and 4385 transitions. [2022-07-12 10:25:15,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 436 transitions, 3369 flow [2022-07-12 10:25:15,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 436 transitions, 3253 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:15,992 INFO L242 Difference]: Finished difference. Result has 394 places, 380 transitions, 2686 flow [2022-07-12 10:25:15,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2686, PETRI_PLACES=394, PETRI_TRANSITIONS=380} [2022-07-12 10:25:15,993 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 180 predicate places. [2022-07-12 10:25:15,993 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 380 transitions, 2686 flow [2022-07-12 10:25:15,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:15,994 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,994 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] [2022-07-12 10:25:15,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:25:15,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash 840040018, now seen corresponding path program 6 times [2022-07-12 10:25:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874213834] [2022-07-12 10:25:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874213834] [2022-07-12 10:25:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874213834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:16,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:16,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335098504] [2022-07-12 10:25:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:16,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:16,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:16,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:16,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 380 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:16,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:16,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:16,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:17,224 INFO L129 PetriNetUnfolder]: 1277/5075 cut-off events. [2022-07-12 10:25:17,224 INFO L130 PetriNetUnfolder]: For 19797/19919 co-relation queries the response was YES. [2022-07-12 10:25:17,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 5075 events. 1277/5075 cut-off events. For 19797/19919 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 54082 event pairs, 750 based on Foata normal form. 2/4838 useless extension candidates. Maximal degree in co-relation 17020. Up to 1725 conditions per place. [2022-07-12 10:25:17,281 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 139 selfloop transitions, 89 changer transitions 16/440 dead transitions. [2022-07-12 10:25:17,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 3797 flow [2022-07-12 10:25:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-12 10:25:17,286 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-12 10:25:17,286 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-12 10:25:17,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-12 10:25:17,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:17,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-12 10:25:17,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 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) [2022-07-12 10:25:17,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:17,297 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:17,297 INFO L186 Difference]: Start difference. First operand has 394 places, 380 transitions, 2686 flow. Second operand 17 states and 3398 transitions. [2022-07-12 10:25:17,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 3797 flow [2022-07-12 10:25:17,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 440 transitions, 3647 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:17,463 INFO L242 Difference]: Finished difference. Result has 415 places, 401 transitions, 3139 flow [2022-07-12 10:25:17,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3139, PETRI_PLACES=415, PETRI_TRANSITIONS=401} [2022-07-12 10:25:17,465 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 201 predicate places. [2022-07-12 10:25:17,465 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 401 transitions, 3139 flow [2022-07-12 10:25:17,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:17,466 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:17,466 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] [2022-07-12 10:25:17,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:25:17,466 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash 80032396, now seen corresponding path program 7 times [2022-07-12 10:25:17,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:17,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896251612] [2022-07-12 10:25:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:17,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896251612] [2022-07-12 10:25:17,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896251612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:17,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:17,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726770966] [2022-07-12 10:25:17,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:17,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:17,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:17,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 401 transitions, 3139 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:17,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:17,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:17,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:18,833 INFO L129 PetriNetUnfolder]: 1304/5373 cut-off events. [2022-07-12 10:25:18,833 INFO L130 PetriNetUnfolder]: For 23368/23552 co-relation queries the response was YES. [2022-07-12 10:25:18,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 5373 events. 1304/5373 cut-off events. For 23368/23552 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 58458 event pairs, 712 based on Foata normal form. 17/5152 useless extension candidates. Maximal degree in co-relation 18379. Up to 1781 conditions per place. [2022-07-12 10:25:18,998 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 147 selfloop transitions, 104 changer transitions 14/461 dead transitions. [2022-07-12 10:25:18,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 461 transitions, 4268 flow [2022-07-12 10:25:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-12 10:25:19,003 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-12 10:25:19,003 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-12 10:25:19,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-12 10:25:19,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:19,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-12 10:25:19,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 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) [2022-07-12 10:25:19,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 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) [2022-07-12 10:25:19,013 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 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) [2022-07-12 10:25:19,013 INFO L186 Difference]: Start difference. First operand has 415 places, 401 transitions, 3139 flow. Second operand 16 states and 3198 transitions. [2022-07-12 10:25:19,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 461 transitions, 4268 flow [2022-07-12 10:25:19,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 461 transitions, 4146 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:19,221 INFO L242 Difference]: Finished difference. Result has 435 places, 419 transitions, 3566 flow [2022-07-12 10:25:19,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3566, PETRI_PLACES=435, PETRI_TRANSITIONS=419} [2022-07-12 10:25:19,223 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 221 predicate places. [2022-07-12 10:25:19,223 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 419 transitions, 3566 flow [2022-07-12 10:25:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:19,224 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:19,224 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] [2022-07-12 10:25:19,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:25:19,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:19,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1995871614, now seen corresponding path program 8 times [2022-07-12 10:25:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:19,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072730519] [2022-07-12 10:25:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072730519] [2022-07-12 10:25:19,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072730519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:19,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:19,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291592380] [2022-07-12 10:25:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:19,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:19,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:19,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:19,332 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:19,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 419 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:19,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:19,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:19,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:20,531 INFO L129 PetriNetUnfolder]: 1335/5343 cut-off events. [2022-07-12 10:25:20,531 INFO L130 PetriNetUnfolder]: For 24742/24864 co-relation queries the response was YES. [2022-07-12 10:25:20,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 5343 events. 1335/5343 cut-off events. For 24742/24864 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 58449 event pairs, 679 based on Foata normal form. 11/5116 useless extension candidates. Maximal degree in co-relation 19598. Up to 1719 conditions per place. [2022-07-12 10:25:20,598 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 171 selfloop transitions, 98 changer transitions 23/488 dead transitions. [2022-07-12 10:25:20,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 488 transitions, 4987 flow [2022-07-12 10:25:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2022-07-12 10:25:20,604 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-07-12 10:25:20,605 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2022-07-12 10:25:20,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2022-07-12 10:25:20,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:20,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2022-07-12 10:25:20,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.52380952380952) internal successors, (4190), 21 states have internal predecessors, (4190), 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) [2022-07-12 10:25:20,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 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) [2022-07-12 10:25:20,618 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 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) [2022-07-12 10:25:20,618 INFO L186 Difference]: Start difference. First operand has 435 places, 419 transitions, 3566 flow. Second operand 21 states and 4190 transitions. [2022-07-12 10:25:20,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 488 transitions, 4987 flow [2022-07-12 10:25:20,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 488 transitions, 4849 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:20,904 INFO L242 Difference]: Finished difference. Result has 464 places, 443 transitions, 4245 flow [2022-07-12 10:25:20,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4245, PETRI_PLACES=464, PETRI_TRANSITIONS=443} [2022-07-12 10:25:20,906 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 250 predicate places. [2022-07-12 10:25:20,906 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 443 transitions, 4245 flow [2022-07-12 10:25:20,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:20,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:20,907 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] [2022-07-12 10:25:20,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:25:20,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1027007434, now seen corresponding path program 9 times [2022-07-12 10:25:20,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:20,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108006303] [2022-07-12 10:25:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:20,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:21,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108006303] [2022-07-12 10:25:21,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108006303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:21,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:21,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139194045] [2022-07-12 10:25:21,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:21,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:21,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:21,037 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:21,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 443 transitions, 4245 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:21,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:21,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:21,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:22,290 INFO L129 PetriNetUnfolder]: 1335/5528 cut-off events. [2022-07-12 10:25:22,291 INFO L130 PetriNetUnfolder]: For 31145/31341 co-relation queries the response was YES. [2022-07-12 10:25:22,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 5528 events. 1335/5528 cut-off events. For 31145/31341 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 61055 event pairs, 695 based on Foata normal form. 24/5324 useless extension candidates. Maximal degree in co-relation 20544. Up to 1819 conditions per place. [2022-07-12 10:25:22,355 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 160 selfloop transitions, 117 changer transitions 23/496 dead transitions. [2022-07-12 10:25:22,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 496 transitions, 5379 flow [2022-07-12 10:25:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-12 10:25:22,360 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-12 10:25:22,360 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-12 10:25:22,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-12 10:25:22,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:22,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-12 10:25:22,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 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) [2022-07-12 10:25:22,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:22,369 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:22,369 INFO L186 Difference]: Start difference. First operand has 464 places, 443 transitions, 4245 flow. Second operand 18 states and 3593 transitions. [2022-07-12 10:25:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 496 transitions, 5379 flow [2022-07-12 10:25:22,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 496 transitions, 5187 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:22,717 INFO L242 Difference]: Finished difference. Result has 485 places, 453 transitions, 4557 flow [2022-07-12 10:25:22,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4557, PETRI_PLACES=485, PETRI_TRANSITIONS=453} [2022-07-12 10:25:22,718 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 271 predicate places. [2022-07-12 10:25:22,718 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 453 transitions, 4557 flow [2022-07-12 10:25:22,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:22,719 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,719 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] [2022-07-12 10:25:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:25:22,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 331830240, now seen corresponding path program 10 times [2022-07-12 10:25:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610870843] [2022-07-12 10:25:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:22,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610870843] [2022-07-12 10:25:22,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610870843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:22,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416899530] [2022-07-12 10:25:22,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:22,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:22,844 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:22,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 453 transitions, 4557 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:22,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:22,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:24,225 INFO L129 PetriNetUnfolder]: 1368/5640 cut-off events. [2022-07-12 10:25:24,225 INFO L130 PetriNetUnfolder]: For 30503/30631 co-relation queries the response was YES. [2022-07-12 10:25:24,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 5640 events. 1368/5640 cut-off events. For 30503/30631 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 63155 event pairs, 696 based on Foata normal form. 11/5411 useless extension candidates. Maximal degree in co-relation 21736. Up to 1869 conditions per place. [2022-07-12 10:25:24,293 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 188 selfloop transitions, 107 changer transitions 15/506 dead transitions. [2022-07-12 10:25:24,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 506 transitions, 5851 flow [2022-07-12 10:25:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:24,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-12 10:25:24,297 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-12 10:25:24,297 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-12 10:25:24,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-12 10:25:24,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:24,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-12 10:25:24,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 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) [2022-07-12 10:25:24,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:24,305 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:24,305 INFO L186 Difference]: Start difference. First operand has 485 places, 453 transitions, 4557 flow. Second operand 17 states and 3398 transitions. [2022-07-12 10:25:24,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 506 transitions, 5851 flow [2022-07-12 10:25:24,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 506 transitions, 5669 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:24,522 INFO L242 Difference]: Finished difference. Result has 504 places, 474 transitions, 5100 flow [2022-07-12 10:25:24,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5100, PETRI_PLACES=504, PETRI_TRANSITIONS=474} [2022-07-12 10:25:24,523 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 290 predicate places. [2022-07-12 10:25:24,524 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 474 transitions, 5100 flow [2022-07-12 10:25:24,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:24,524 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:24,524 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] [2022-07-12 10:25:24,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:25:24,525 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2122669658, now seen corresponding path program 11 times [2022-07-12 10:25:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:24,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678725460] [2022-07-12 10:25:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:24,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678725460] [2022-07-12 10:25:24,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678725460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:24,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125434212] [2022-07-12 10:25:24,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:24,625 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:24,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 474 transitions, 5100 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:24,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:24,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:26,089 INFO L129 PetriNetUnfolder]: 1375/5867 cut-off events. [2022-07-12 10:25:26,089 INFO L130 PetriNetUnfolder]: For 34876/35025 co-relation queries the response was YES. [2022-07-12 10:25:26,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 5867 events. 1375/5867 cut-off events. For 34876/35025 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 66240 event pairs, 765 based on Foata normal form. 2/5620 useless extension candidates. Maximal degree in co-relation 22581. Up to 1891 conditions per place. [2022-07-12 10:25:26,175 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 173 selfloop transitions, 127 changer transitions 20/516 dead transitions. [2022-07-12 10:25:26,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 516 transitions, 6163 flow [2022-07-12 10:25:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-12 10:25:26,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-12 10:25:26,180 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-12 10:25:26,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-12 10:25:26,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:26,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-12 10:25:26,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 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) [2022-07-12 10:25:26,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:26,189 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:26,189 INFO L186 Difference]: Start difference. First operand has 504 places, 474 transitions, 5100 flow. Second operand 18 states and 3593 transitions. [2022-07-12 10:25:26,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 516 transitions, 6163 flow [2022-07-12 10:25:26,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 516 transitions, 5985 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:26,428 INFO L242 Difference]: Finished difference. Result has 523 places, 486 transitions, 5477 flow [2022-07-12 10:25:26,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5477, PETRI_PLACES=523, PETRI_TRANSITIONS=486} [2022-07-12 10:25:26,429 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-12 10:25:26,429 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5477 flow [2022-07-12 10:25:26,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:26,430 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,430 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] [2022-07-12 10:25:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:25:26,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1393070102, now seen corresponding path program 12 times [2022-07-12 10:25:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121008018] [2022-07-12 10:25:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121008018] [2022-07-12 10:25:26,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121008018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:26,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:26,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:26,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347825451] [2022-07-12 10:25:26,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:26,532 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:26,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 486 transitions, 5477 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:26,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:26,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:26,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,923 INFO L129 PetriNetUnfolder]: 1370/5689 cut-off events. [2022-07-12 10:25:27,923 INFO L130 PetriNetUnfolder]: For 31921/32052 co-relation queries the response was YES. [2022-07-12 10:25:27,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22719 conditions, 5689 events. 1370/5689 cut-off events. For 31921/32052 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 63951 event pairs, 697 based on Foata normal form. 11/5461 useless extension candidates. Maximal degree in co-relation 22581. Up to 1881 conditions per place. [2022-07-12 10:25:28,010 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 191 selfloop transitions, 116 changer transitions 24/527 dead transitions. [2022-07-12 10:25:28,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 527 transitions, 6531 flow [2022-07-12 10:25:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2022-07-12 10:25:28,014 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2022-07-12 10:25:28,015 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2022-07-12 10:25:28,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2022-07-12 10:25:28,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2022-07-12 10:25:28,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.83333333333334) internal successors, (3597), 18 states have internal predecessors, (3597), 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) [2022-07-12 10:25:28,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:28,023 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:28,023 INFO L186 Difference]: Start difference. First operand has 523 places, 486 transitions, 5477 flow. Second operand 18 states and 3597 transitions. [2022-07-12 10:25:28,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 527 transitions, 6531 flow [2022-07-12 10:25:28,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 527 transitions, 6394 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:28,426 INFO L242 Difference]: Finished difference. Result has 541 places, 495 transitions, 5838 flow [2022-07-12 10:25:28,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5838, PETRI_PLACES=541, PETRI_TRANSITIONS=495} [2022-07-12 10:25:28,427 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 327 predicate places. [2022-07-12 10:25:28,427 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 495 transitions, 5838 flow [2022-07-12 10:25:28,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:28,427 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,427 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] [2022-07-12 10:25:28,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:25:28,428 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash 869174098, now seen corresponding path program 13 times [2022-07-12 10:25:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748235564] [2022-07-12 10:25:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748235564] [2022-07-12 10:25:28,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748235564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:28,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531556935] [2022-07-12 10:25:28,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:28,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:28,518 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:28,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 495 transitions, 5838 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:28,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:28,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:30,000 INFO L129 PetriNetUnfolder]: 1468/6055 cut-off events. [2022-07-12 10:25:30,000 INFO L130 PetriNetUnfolder]: For 40574/40705 co-relation queries the response was YES. [2022-07-12 10:25:30,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25112 conditions, 6055 events. 1468/6055 cut-off events. For 40574/40705 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 68923 event pairs, 699 based on Foata normal form. 5/5832 useless extension candidates. Maximal degree in co-relation 24970. Up to 1920 conditions per place. [2022-07-12 10:25:30,256 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 215 selfloop transitions, 144 changer transitions 23/578 dead transitions. [2022-07-12 10:25:30,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 578 transitions, 7572 flow [2022-07-12 10:25:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2022-07-12 10:25:30,260 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2022-07-12 10:25:30,260 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2022-07-12 10:25:30,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2022-07-12 10:25:30,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:30,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2022-07-12 10:25:30,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.22727272727272) internal successors, (4383), 22 states have internal predecessors, (4383), 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) [2022-07-12 10:25:30,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 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) [2022-07-12 10:25:30,269 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 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) [2022-07-12 10:25:30,270 INFO L186 Difference]: Start difference. First operand has 541 places, 495 transitions, 5838 flow. Second operand 22 states and 4383 transitions. [2022-07-12 10:25:30,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 578 transitions, 7572 flow [2022-07-12 10:25:30,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 578 transitions, 7447 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:30,582 INFO L242 Difference]: Finished difference. Result has 571 places, 527 transitions, 6764 flow [2022-07-12 10:25:30,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6764, PETRI_PLACES=571, PETRI_TRANSITIONS=527} [2022-07-12 10:25:30,583 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 357 predicate places. [2022-07-12 10:25:30,583 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 6764 flow [2022-07-12 10:25:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:30,583 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,584 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] [2022-07-12 10:25:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:25:30,584 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash 173628278, now seen corresponding path program 14 times [2022-07-12 10:25:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811948104] [2022-07-12 10:25:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811948104] [2022-07-12 10:25:30,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811948104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11302879] [2022-07-12 10:25:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:30,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:30,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 527 transitions, 6764 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:30,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:30,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:32,370 INFO L129 PetriNetUnfolder]: 1502/6295 cut-off events. [2022-07-12 10:25:32,371 INFO L130 PetriNetUnfolder]: For 47419/47550 co-relation queries the response was YES. [2022-07-12 10:25:32,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27257 conditions, 6295 events. 1502/6295 cut-off events. For 47419/47550 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 72622 event pairs, 710 based on Foata normal form. 5/6063 useless extension candidates. Maximal degree in co-relation 27103. Up to 1945 conditions per place. [2022-07-12 10:25:32,448 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 270 selfloop transitions, 106 changer transitions 21/593 dead transitions. [2022-07-12 10:25:32,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 593 transitions, 8429 flow [2022-07-12 10:25:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2022-07-12 10:25:32,460 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2022-07-12 10:25:32,460 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2022-07-12 10:25:32,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2022-07-12 10:25:32,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:32,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2022-07-12 10:25:32,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.38095238095238) internal successors, (4187), 21 states have internal predecessors, (4187), 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) [2022-07-12 10:25:32,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 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) [2022-07-12 10:25:32,478 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 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) [2022-07-12 10:25:32,478 INFO L186 Difference]: Start difference. First operand has 571 places, 527 transitions, 6764 flow. Second operand 21 states and 4187 transitions. [2022-07-12 10:25:32,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 593 transitions, 8429 flow [2022-07-12 10:25:32,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 8239 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:32,844 INFO L242 Difference]: Finished difference. Result has 601 places, 551 transitions, 7438 flow [2022-07-12 10:25:32,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7438, PETRI_PLACES=601, PETRI_TRANSITIONS=551} [2022-07-12 10:25:32,845 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 387 predicate places. [2022-07-12 10:25:32,845 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 551 transitions, 7438 flow [2022-07-12 10:25:32,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:32,845 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:32,846 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] [2022-07-12 10:25:32,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:25:32,846 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1231041606, now seen corresponding path program 15 times [2022-07-12 10:25:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:32,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347797266] [2022-07-12 10:25:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:32,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347797266] [2022-07-12 10:25:32,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347797266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:32,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:32,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559059117] [2022-07-12 10:25:32,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:32,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:32,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:32,992 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:32,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 551 transitions, 7438 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:32,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:32,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:32,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:34,931 INFO L129 PetriNetUnfolder]: 1525/6442 cut-off events. [2022-07-12 10:25:34,932 INFO L130 PetriNetUnfolder]: For 52156/52287 co-relation queries the response was YES. [2022-07-12 10:25:35,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28522 conditions, 6442 events. 1525/6442 cut-off events. For 52156/52287 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 75161 event pairs, 702 based on Foata normal form. 5/6217 useless extension candidates. Maximal degree in co-relation 28355. Up to 2016 conditions per place. [2022-07-12 10:25:35,054 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 236 selfloop transitions, 162 changer transitions 18/612 dead transitions. [2022-07-12 10:25:35,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 612 transitions, 8986 flow [2022-07-12 10:25:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-12 10:25:35,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-12 10:25:35,058 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-12 10:25:35,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-12 10:25:35,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:35,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-12 10:25:35,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 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) [2022-07-12 10:25:35,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:35,065 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:35,065 INFO L186 Difference]: Start difference. First operand has 601 places, 551 transitions, 7438 flow. Second operand 18 states and 3593 transitions. [2022-07-12 10:25:35,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 612 transitions, 8986 flow [2022-07-12 10:25:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 612 transitions, 8796 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:35,507 INFO L242 Difference]: Finished difference. Result has 622 places, 572 transitions, 8094 flow [2022-07-12 10:25:35,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8094, PETRI_PLACES=622, PETRI_TRANSITIONS=572} [2022-07-12 10:25:35,509 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 408 predicate places. [2022-07-12 10:25:35,509 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 572 transitions, 8094 flow [2022-07-12 10:25:35,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:35,510 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,510 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] [2022-07-12 10:25:35,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:25:35,510 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 787764488, now seen corresponding path program 16 times [2022-07-12 10:25:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665078639] [2022-07-12 10:25:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665078639] [2022-07-12 10:25:35,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665078639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251236253] [2022-07-12 10:25:35,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:35,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:35,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 572 transitions, 8094 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:35,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:35,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:37,418 INFO L129 PetriNetUnfolder]: 1580/6607 cut-off events. [2022-07-12 10:25:37,419 INFO L130 PetriNetUnfolder]: For 57093/57224 co-relation queries the response was YES. [2022-07-12 10:25:37,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30514 conditions, 6607 events. 1580/6607 cut-off events. For 57093/57224 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 77398 event pairs, 713 based on Foata normal form. 5/6374 useless extension candidates. Maximal degree in co-relation 30340. Up to 2059 conditions per place. [2022-07-12 10:25:37,518 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 280 selfloop transitions, 135 changer transitions 16/627 dead transitions. [2022-07-12 10:25:37,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 627 transitions, 9692 flow [2022-07-12 10:25:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-12 10:25:37,520 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-12 10:25:37,520 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-12 10:25:37,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-12 10:25:37,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:37,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-12 10:25:37,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 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) [2022-07-12 10:25:37,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:37,526 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:37,526 INFO L186 Difference]: Start difference. First operand has 622 places, 572 transitions, 8094 flow. Second operand 17 states and 3397 transitions. [2022-07-12 10:25:37,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 627 transitions, 9692 flow [2022-07-12 10:25:37,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 627 transitions, 9474 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:37,988 INFO L242 Difference]: Finished difference. Result has 643 places, 593 transitions, 8730 flow [2022-07-12 10:25:37,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7920, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8730, PETRI_PLACES=643, PETRI_TRANSITIONS=593} [2022-07-12 10:25:37,988 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 429 predicate places. [2022-07-12 10:25:37,989 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 593 transitions, 8730 flow [2022-07-12 10:25:37,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:37,989 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:37,989 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] [2022-07-12 10:25:37,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:25:37,989 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:37,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:37,990 INFO L85 PathProgramCache]: Analyzing trace with hash 340551250, now seen corresponding path program 17 times [2022-07-12 10:25:37,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:37,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319030935] [2022-07-12 10:25:37,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:37,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:38,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:38,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319030935] [2022-07-12 10:25:38,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319030935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:38,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:38,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:38,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020872005] [2022-07-12 10:25:38,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:38,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:38,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:38,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:38,100 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:38,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 593 transitions, 8730 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:38,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:38,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:38,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:40,274 INFO L129 PetriNetUnfolder]: 1603/6826 cut-off events. [2022-07-12 10:25:40,274 INFO L130 PetriNetUnfolder]: For 61184/61315 co-relation queries the response was YES. [2022-07-12 10:25:40,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31933 conditions, 6826 events. 1603/6826 cut-off events. For 61184/61315 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81044 event pairs, 710 based on Foata normal form. 5/6592 useless extension candidates. Maximal degree in co-relation 31751. Up to 2094 conditions per place. [2022-07-12 10:25:40,392 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 305 selfloop transitions, 127 changer transitions 17/645 dead transitions. [2022-07-12 10:25:40,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 645 transitions, 10337 flow [2022-07-12 10:25:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-12 10:25:40,395 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-12 10:25:40,395 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-12 10:25:40,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-12 10:25:40,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:40,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-12 10:25:40,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 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) [2022-07-12 10:25:40,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:40,402 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:40,402 INFO L186 Difference]: Start difference. First operand has 643 places, 593 transitions, 8730 flow. Second operand 18 states and 3596 transitions. [2022-07-12 10:25:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 645 transitions, 10337 flow [2022-07-12 10:25:40,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 645 transitions, 10203 flow, removed 67 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:40,906 INFO L242 Difference]: Finished difference. Result has 664 places, 612 transitions, 9395 flow [2022-07-12 10:25:40,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8600, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9395, PETRI_PLACES=664, PETRI_TRANSITIONS=612} [2022-07-12 10:25:40,907 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 450 predicate places. [2022-07-12 10:25:40,907 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 612 transitions, 9395 flow [2022-07-12 10:25:40,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:40,908 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:40,908 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] [2022-07-12 10:25:40,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:25:40,908 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1026103542, now seen corresponding path program 18 times [2022-07-12 10:25:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:40,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019335899] [2022-07-12 10:25:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:40,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:40,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019335899] [2022-07-12 10:25:40,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019335899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:40,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:40,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:40,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554325344] [2022-07-12 10:25:40,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:40,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:40,993 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:40,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 612 transitions, 9395 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:40,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:40,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:40,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:43,042 INFO L129 PetriNetUnfolder]: 1606/6864 cut-off events. [2022-07-12 10:25:43,042 INFO L130 PetriNetUnfolder]: For 64603/64734 co-relation queries the response was YES. [2022-07-12 10:25:43,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32733 conditions, 6864 events. 1606/6864 cut-off events. For 64603/64734 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81596 event pairs, 704 based on Foata normal form. 5/6641 useless extension candidates. Maximal degree in co-relation 32544. Up to 2120 conditions per place. [2022-07-12 10:25:43,156 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 260 selfloop transitions, 179 changer transitions 22/657 dead transitions. [2022-07-12 10:25:43,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 657 transitions, 10708 flow [2022-07-12 10:25:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2022-07-12 10:25:43,159 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2022-07-12 10:25:43,159 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2022-07-12 10:25:43,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2022-07-12 10:25:43,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:43,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2022-07-12 10:25:43,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.0625) internal successors, (3201), 16 states have internal predecessors, (3201), 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) [2022-07-12 10:25:43,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 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) [2022-07-12 10:25:43,164 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 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) [2022-07-12 10:25:43,164 INFO L186 Difference]: Start difference. First operand has 664 places, 612 transitions, 9395 flow. Second operand 16 states and 3201 transitions. [2022-07-12 10:25:43,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 657 transitions, 10708 flow [2022-07-12 10:25:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 657 transitions, 10536 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:43,725 INFO L242 Difference]: Finished difference. Result has 682 places, 620 transitions, 9803 flow [2022-07-12 10:25:43,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9803, PETRI_PLACES=682, PETRI_TRANSITIONS=620} [2022-07-12 10:25:43,726 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 468 predicate places. [2022-07-12 10:25:43,726 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 620 transitions, 9803 flow [2022-07-12 10:25:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:43,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:43,727 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] [2022-07-12 10:25:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:25:43,727 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash 157105292, now seen corresponding path program 19 times [2022-07-12 10:25:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:43,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850478385] [2022-07-12 10:25:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:43,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:43,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:43,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850478385] [2022-07-12 10:25:43,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850478385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:43,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:43,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:43,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277702456] [2022-07-12 10:25:43,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:43,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:43,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:43,821 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:43,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 620 transitions, 9803 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:43,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:43,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:43,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,092 INFO L129 PetriNetUnfolder]: 1625/7174 cut-off events. [2022-07-12 10:25:46,093 INFO L130 PetriNetUnfolder]: For 70157/70288 co-relation queries the response was YES. [2022-07-12 10:25:46,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34320 conditions, 7174 events. 1625/7174 cut-off events. For 70157/70288 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 87072 event pairs, 717 based on Foata normal form. 5/6940 useless extension candidates. Maximal degree in co-relation 34125. Up to 2141 conditions per place. [2022-07-12 10:25:46,223 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 312 selfloop transitions, 135 changer transitions 22/665 dead transitions. [2022-07-12 10:25:46,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 665 transitions, 11273 flow [2022-07-12 10:25:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2022-07-12 10:25:46,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2022-07-12 10:25:46,226 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2022-07-12 10:25:46,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2022-07-12 10:25:46,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2022-07-12 10:25:46,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.05882352941177) internal successors, (3401), 17 states have internal predecessors, (3401), 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) [2022-07-12 10:25:46,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:46,232 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 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) [2022-07-12 10:25:46,232 INFO L186 Difference]: Start difference. First operand has 682 places, 620 transitions, 9803 flow. Second operand 17 states and 3401 transitions. [2022-07-12 10:25:46,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 665 transitions, 11273 flow [2022-07-12 10:25:46,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 665 transitions, 10968 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:46,963 INFO L242 Difference]: Finished difference. Result has 698 places, 633 transitions, 10169 flow [2022-07-12 10:25:46,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9518, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10169, PETRI_PLACES=698, PETRI_TRANSITIONS=633} [2022-07-12 10:25:46,964 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 484 predicate places. [2022-07-12 10:25:46,964 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 633 transitions, 10169 flow [2022-07-12 10:25:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:46,965 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,965 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] [2022-07-12 10:25:46,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:25:46,965 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,966 INFO L85 PathProgramCache]: Analyzing trace with hash 573914000, now seen corresponding path program 20 times [2022-07-12 10:25:46,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708059309] [2022-07-12 10:25:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:47,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:47,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708059309] [2022-07-12 10:25:47,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708059309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:47,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:47,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616131814] [2022-07-12 10:25:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:47,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:47,062 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:47,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 633 transitions, 10169 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:47,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:47,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:47,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:49,242 INFO L129 PetriNetUnfolder]: 1625/7156 cut-off events. [2022-07-12 10:25:49,242 INFO L130 PetriNetUnfolder]: For 70851/70982 co-relation queries the response was YES. [2022-07-12 10:25:49,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 7156 events. 1625/7156 cut-off events. For 70851/70982 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 86615 event pairs, 710 based on Foata normal form. 5/6929 useless extension candidates. Maximal degree in co-relation 34188. Up to 2137 conditions per place. [2022-07-12 10:25:49,372 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 298 selfloop transitions, 153 changer transitions 27/674 dead transitions. [2022-07-12 10:25:49,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 674 transitions, 11514 flow [2022-07-12 10:25:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-12 10:25:49,375 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-12 10:25:49,375 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-12 10:25:49,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-12 10:25:49,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:49,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-12 10:25:49,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 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) [2022-07-12 10:25:49,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:49,381 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 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) [2022-07-12 10:25:49,381 INFO L186 Difference]: Start difference. First operand has 698 places, 633 transitions, 10169 flow. Second operand 18 states and 3596 transitions. [2022-07-12 10:25:49,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 674 transitions, 11514 flow [2022-07-12 10:25:50,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 674 transitions, 11345 flow, removed 48 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:50,039 INFO L242 Difference]: Finished difference. Result has 717 places, 642 transitions, 10587 flow [2022-07-12 10:25:50,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10004, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10587, PETRI_PLACES=717, PETRI_TRANSITIONS=642} [2022-07-12 10:25:50,040 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 503 predicate places. [2022-07-12 10:25:50,040 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 642 transitions, 10587 flow [2022-07-12 10:25:50,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:50,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:50,041 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] [2022-07-12 10:25:50,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:25:50,041 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:50,042 INFO L85 PathProgramCache]: Analyzing trace with hash 324066382, now seen corresponding path program 1 times [2022-07-12 10:25:50,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:50,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380763801] [2022-07-12 10:25:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:50,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:50,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380763801] [2022-07-12 10:25:50,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380763801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:50,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:50,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:50,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013073987] [2022-07-12 10:25:50,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:50,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:50,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:50,142 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:50,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 642 transitions, 10587 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:50,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:50,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:50,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:52,546 INFO L129 PetriNetUnfolder]: 1623/6822 cut-off events. [2022-07-12 10:25:52,546 INFO L130 PetriNetUnfolder]: For 75736/75863 co-relation queries the response was YES. [2022-07-12 10:25:52,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 6822 events. 1623/6822 cut-off events. For 75736/75863 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 81227 event pairs, 205 based on Foata normal form. 3/6618 useless extension candidates. Maximal degree in co-relation 34034. Up to 2437 conditions per place. [2022-07-12 10:25:52,658 INFO L132 encePairwiseOnDemand]: 220/235 looper letters, 439 selfloop transitions, 88 changer transitions 18/739 dead transitions. [2022-07-12 10:25:52,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 739 transitions, 12323 flow [2022-07-12 10:25:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3227 transitions. [2022-07-12 10:25:52,661 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8582446808510639 [2022-07-12 10:25:52,661 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3227 transitions. [2022-07-12 10:25:52,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3227 transitions. [2022-07-12 10:25:52,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:52,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3227 transitions. [2022-07-12 10:25:52,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.6875) internal successors, (3227), 16 states have internal predecessors, (3227), 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) [2022-07-12 10:25:52,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 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) [2022-07-12 10:25:52,666 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 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) [2022-07-12 10:25:52,666 INFO L186 Difference]: Start difference. First operand has 717 places, 642 transitions, 10587 flow. Second operand 16 states and 3227 transitions. [2022-07-12 10:25:52,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 739 transitions, 12323 flow [2022-07-12 10:25:53,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 739 transitions, 12121 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:53,281 INFO L242 Difference]: Finished difference. Result has 738 places, 675 transitions, 10939 flow [2022-07-12 10:25:53,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10393, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10939, PETRI_PLACES=738, PETRI_TRANSITIONS=675} [2022-07-12 10:25:53,282 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 524 predicate places. [2022-07-12 10:25:53,282 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 675 transitions, 10939 flow [2022-07-12 10:25:53,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:53,283 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:53,283 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] [2022-07-12 10:25:53,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:25:53,284 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 809221024, now seen corresponding path program 1 times [2022-07-12 10:25:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:53,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503545601] [2022-07-12 10:25:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:53,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503545601] [2022-07-12 10:25:53,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503545601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:53,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:53,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:25:53,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877587579] [2022-07-12 10:25:53,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:53,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:25:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:25:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:25:53,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-12 10:25:53,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 675 transitions, 10939 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 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) [2022-07-12 10:25:53,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:53,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-12 10:25:53,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:54,271 INFO L129 PetriNetUnfolder]: 453/3449 cut-off events. [2022-07-12 10:25:54,272 INFO L130 PetriNetUnfolder]: For 37902/38341 co-relation queries the response was YES. [2022-07-12 10:25:54,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15939 conditions, 3449 events. 453/3449 cut-off events. For 37902/38341 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 35890 event pairs, 39 based on Foata normal form. 23/3358 useless extension candidates. Maximal degree in co-relation 15725. Up to 339 conditions per place. [2022-07-12 10:25:54,331 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 19 selfloop transitions, 0 changer transitions 475/695 dead transitions. [2022-07-12 10:25:54,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 695 transitions, 11076 flow [2022-07-12 10:25:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:25:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:25:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-12 10:25:54,332 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-12 10:25:54,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-12 10:25:54,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-12 10:25:54,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:54,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-12 10:25:54,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 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) [2022-07-12 10:25:54,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2022-07-12 10:25:54,335 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2022-07-12 10:25:54,335 INFO L186 Difference]: Start difference. First operand has 738 places, 675 transitions, 10939 flow. Second operand 9 states and 1861 transitions. [2022-07-12 10:25:54,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 695 transitions, 11076 flow [2022-07-12 10:25:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 695 transitions, 10500 flow, removed 132 selfloop flow, removed 62 redundant places. [2022-07-12 10:25:54,669 INFO L242 Difference]: Finished difference. Result has 688 places, 220 transitions, 786 flow [2022-07-12 10:25:54,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10363, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=786, PETRI_PLACES=688, PETRI_TRANSITIONS=220} [2022-07-12 10:25:54,670 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 474 predicate places. [2022-07-12 10:25:54,670 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 220 transitions, 786 flow [2022-07-12 10:25:54,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 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) [2022-07-12 10:25:54,671 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:54,671 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] [2022-07-12 10:25:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:25:54,671 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1449884105, now seen corresponding path program 1 times [2022-07-12 10:25:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:54,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011254918] [2022-07-12 10:25:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:54,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011254918] [2022-07-12 10:25:54,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011254918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:54,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:54,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:54,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362078603] [2022-07-12 10:25:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:54,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:54,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:54,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:54,765 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:54,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 220 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:54,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:54,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:54,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:55,352 INFO L129 PetriNetUnfolder]: 460/1907 cut-off events. [2022-07-12 10:25:55,352 INFO L130 PetriNetUnfolder]: For 5592/5633 co-relation queries the response was YES. [2022-07-12 10:25:55,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 1907 events. 460/1907 cut-off events. For 5592/5633 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15090 event pairs, 190 based on Foata normal form. 11/1809 useless extension candidates. Maximal degree in co-relation 5091. Up to 486 conditions per place. [2022-07-12 10:25:55,387 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 86 selfloop transitions, 33 changer transitions 28/328 dead transitions. [2022-07-12 10:25:55,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 328 transitions, 1567 flow [2022-07-12 10:25:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4790 transitions. [2022-07-12 10:25:55,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849290780141844 [2022-07-12 10:25:55,389 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4790 transitions. [2022-07-12 10:25:55,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4790 transitions. [2022-07-12 10:25:55,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:55,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4790 transitions. [2022-07-12 10:25:55,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.58333333333334) internal successors, (4790), 24 states have internal predecessors, (4790), 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) [2022-07-12 10:25:55,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 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) [2022-07-12 10:25:55,396 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 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) [2022-07-12 10:25:55,396 INFO L186 Difference]: Start difference. First operand has 688 places, 220 transitions, 786 flow. Second operand 24 states and 4790 transitions. [2022-07-12 10:25:55,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 328 transitions, 1567 flow [2022-07-12 10:25:55,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 1265 flow, removed 123 selfloop flow, removed 72 redundant places. [2022-07-12 10:25:55,430 INFO L242 Difference]: Finished difference. Result has 353 places, 250 transitions, 880 flow [2022-07-12 10:25:55,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=880, PETRI_PLACES=353, PETRI_TRANSITIONS=250} [2022-07-12 10:25:55,431 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 139 predicate places. [2022-07-12 10:25:55,431 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 250 transitions, 880 flow [2022-07-12 10:25:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:55,431 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:55,431 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] [2022-07-12 10:25:55,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:25:55,432 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1247485979, now seen corresponding path program 2 times [2022-07-12 10:25:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:55,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872764700] [2022-07-12 10:25:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:55,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:55,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872764700] [2022-07-12 10:25:55,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872764700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:55,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:55,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:55,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46230761] [2022-07-12 10:25:55,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:55,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:55,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:55,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:55,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:55,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-12 10:25:55,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 250 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 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) [2022-07-12 10:25:55,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:55,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-12 10:25:55,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand