./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:57:33,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:57:33,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:57:33,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:57:33,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:57:33,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:57:33,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:57:33,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:57:33,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:57:33,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:57:33,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:57:34,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:57:34,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:57:34,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:57:34,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:57:34,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:57:34,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:57:34,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:57:34,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:57:34,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:57:34,016 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:57:34,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:57:34,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:57:34,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:57:34,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:57:34,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:57:34,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:57:34,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:57:34,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:57:34,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:57:34,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:57:34,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:57:34,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:57:34,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:57:34,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:57:34,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:57:34,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:57:34,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:57:34,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:57:34,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:57:34,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:57:34,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:57:34,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:57:34,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:57:34,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:57:34,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:57:34,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:57:34,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:57:34,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:57:34,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:57:34,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:57:34,065 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:57:34,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:57:34,066 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:57:34,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:57:34,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:57:34,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:57:34,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:57:34,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:57:34,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:57:34,067 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:57:34,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:57:34,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:57:34,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:57:34,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:57:34,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:57:34,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:57:34,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:57:34,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:57:34,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:57:34,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:57:34,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:57:34,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:57:34,069 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:57:34,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:57:34,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:57:34,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2022-07-21 08:57:34,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:57:34,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:57:34,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:57:34,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:57:34,366 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:57:34,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-07-21 08:57:34,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09af0f699/ddc62d8075eb4c64816d2ad461953720/FLAG586b5a07e [2022-07-21 08:57:34,799 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:57:34,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-07-21 08:57:34,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09af0f699/ddc62d8075eb4c64816d2ad461953720/FLAG586b5a07e [2022-07-21 08:57:34,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09af0f699/ddc62d8075eb4c64816d2ad461953720 [2022-07-21 08:57:34,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:57:34,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:57:34,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:57:34,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:57:34,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:57:34,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:57:34" (1/1) ... [2022-07-21 08:57:34,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4902762e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:34, skipping insertion in model container [2022-07-21 08:57:34,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:57:34" (1/1) ... [2022-07-21 08:57:34,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:57:34,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:57:34,969 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-chromosome-opt-symm.wvr.c[2566,2579] [2022-07-21 08:57:34,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:57:34,996 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:57:35,032 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-chromosome-opt-symm.wvr.c[2566,2579] [2022-07-21 08:57:35,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:57:35,047 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:57:35,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35 WrapperNode [2022-07-21 08:57:35,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:57:35,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:57:35,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:57:35,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:57:35,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,090 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 182 [2022-07-21 08:57:35,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:57:35,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:57:35,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:57:35,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:57:35,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:57:35,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:57:35,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:57:35,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:57:35,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (1/1) ... [2022-07-21 08:57:35,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:57:35,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:35,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:57:35,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:57:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:57:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:57:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:57:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:57:35,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:57:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:57:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:57:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:57:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:57:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:57:35,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:57:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:57:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:57:35,230 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:57:35,342 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:57:35,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:57:35,682 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:57:35,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:57:35,703 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 08:57:35,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:57:35 BoogieIcfgContainer [2022-07-21 08:57:35,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:57:35,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:57:35,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:57:35,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:57:35,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:57:34" (1/3) ... [2022-07-21 08:57:35,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cfc0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:57:35, skipping insertion in model container [2022-07-21 08:57:35,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:57:35" (2/3) ... [2022-07-21 08:57:35,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cfc0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:57:35, skipping insertion in model container [2022-07-21 08:57:35,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:57:35" (3/3) ... [2022-07-21 08:57:35,712 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-07-21 08:57:35,715 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:57:35,722 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:57:35,722 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:57:35,723 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:57:35,803 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:57:35,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 208 places, 222 transitions, 460 flow [2022-07-21 08:57:35,927 INFO L129 PetriNetUnfolder]: 21/220 cut-off events. [2022-07-21 08:57:35,927 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:57:35,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 21/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 155. Up to 3 conditions per place. [2022-07-21 08:57:35,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 222 transitions, 460 flow [2022-07-21 08:57:35,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 211 transitions, 434 flow [2022-07-21 08:57:35,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:57:35,951 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@71aa13eb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a6b5fc [2022-07-21 08:57:35,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:57:36,006 INFO L129 PetriNetUnfolder]: 21/210 cut-off events. [2022-07-21 08:57:36,010 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:57:36,010 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:36,011 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:36,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1581105035, now seen corresponding path program 1 times [2022-07-21 08:57:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:36,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719894727] [2022-07-21 08:57:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719894727] [2022-07-21 08:57:36,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719894727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:36,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:36,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:57:36,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323733729] [2022-07-21 08:57:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:36,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:57:36,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:57:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:57:36,231 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 222 [2022-07-21 08:57:36,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 211 transitions, 434 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:36,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 222 [2022-07-21 08:57:36,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:36,290 INFO L129 PetriNetUnfolder]: 10/200 cut-off events. [2022-07-21 08:57:36,291 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-07-21 08:57:36,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 200 events. 10/200 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 13/196 useless extension candidates. Maximal degree in co-relation 148. Up to 5 conditions per place. [2022-07-21 08:57:36,293 INFO L132 encePairwiseOnDemand]: 211/222 looper letters, 4 selfloop transitions, 0 changer transitions 5/200 dead transitions. [2022-07-21 08:57:36,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 200 transitions, 420 flow [2022-07-21 08:57:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:57:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:57:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2022-07-21 08:57:36,312 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9617117117117117 [2022-07-21 08:57:36,314 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2022-07-21 08:57:36,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2022-07-21 08:57:36,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:36,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2022-07-21 08:57:36,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,326 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,328 INFO L186 Difference]: Start difference. First operand has 197 places, 211 transitions, 434 flow. Second operand 2 states and 427 transitions. [2022-07-21 08:57:36,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 200 transitions, 420 flow [2022-07-21 08:57:36,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 200 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:57:36,334 INFO L242 Difference]: Finished difference. Result has 194 places, 195 transitions, 394 flow [2022-07-21 08:57:36,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=194, PETRI_TRANSITIONS=195} [2022-07-21 08:57:36,339 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -3 predicate places. [2022-07-21 08:57:36,339 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 195 transitions, 394 flow [2022-07-21 08:57:36,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,340 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:36,340 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] [2022-07-21 08:57:36,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:57:36,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:36,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:36,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1879356573, now seen corresponding path program 1 times [2022-07-21 08:57:36,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:36,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495845464] [2022-07-21 08:57:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:36,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:36,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495845464] [2022-07-21 08:57:36,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495845464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:36,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:36,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:57:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699839510] [2022-07-21 08:57:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:36,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:57:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:36,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:57:36,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:57:36,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 222 [2022-07-21 08:57:36,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 195 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:36,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 222 [2022-07-21 08:57:36,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:36,590 INFO L129 PetriNetUnfolder]: 10/207 cut-off events. [2022-07-21 08:57:36,590 INFO L130 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-07-21 08:57:36,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 207 events. 10/207 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 242 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 245. Up to 25 conditions per place. [2022-07-21 08:57:36,592 INFO L132 encePairwiseOnDemand]: 212/222 looper letters, 28 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-07-21 08:57:36,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 203 transitions, 482 flow [2022-07-21 08:57:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:57:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:57:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 948 transitions. [2022-07-21 08:57:36,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8540540540540541 [2022-07-21 08:57:36,596 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 948 transitions. [2022-07-21 08:57:36,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 948 transitions. [2022-07-21 08:57:36,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:36,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 948 transitions. [2022-07-21 08:57:36,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,602 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,602 INFO L186 Difference]: Start difference. First operand has 194 places, 195 transitions, 394 flow. Second operand 5 states and 948 transitions. [2022-07-21 08:57:36,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 203 transitions, 482 flow [2022-07-21 08:57:36,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 203 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:57:36,606 INFO L242 Difference]: Finished difference. Result has 194 places, 197 transitions, 426 flow [2022-07-21 08:57:36,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=194, PETRI_TRANSITIONS=197} [2022-07-21 08:57:36,607 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -3 predicate places. [2022-07-21 08:57:36,607 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 197 transitions, 426 flow [2022-07-21 08:57:36,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:36,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:36,608 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:57:36,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -419875030, now seen corresponding path program 1 times [2022-07-21 08:57:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:36,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308701231] [2022-07-21 08:57:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:36,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:57:36,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308701231] [2022-07-21 08:57:36,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308701231] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:36,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677829463] [2022-07-21 08:57:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:36,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:36,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:57:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:36,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:57:36,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:57:37,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:57:37,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677829463] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:57:37,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:57:37,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-21 08:57:37,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030542940] [2022-07-21 08:57:37,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:57:37,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:57:37,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:37,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:57:37,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:57:37,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-07-21 08:57:37,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 197 transitions, 426 flow. Second operand has 15 states, 15 states have (on average 183.33333333333334) internal successors, (2750), 15 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:37,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:37,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-07-21 08:57:37,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:37,294 INFO L129 PetriNetUnfolder]: 10/225 cut-off events. [2022-07-21 08:57:37,294 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-07-21 08:57:37,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 225 events. 10/225 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 224 event pairs, 0 based on Foata normal form. 4/219 useless extension candidates. Maximal degree in co-relation 295. Up to 19 conditions per place. [2022-07-21 08:57:37,296 INFO L132 encePairwiseOnDemand]: 206/222 looper letters, 30 selfloop transitions, 22 changer transitions 0/217 dead transitions. [2022-07-21 08:57:37,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 217 transitions, 574 flow [2022-07-21 08:57:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:57:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:57:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2036 transitions. [2022-07-21 08:57:37,321 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8337428337428338 [2022-07-21 08:57:37,321 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2036 transitions. [2022-07-21 08:57:37,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2036 transitions. [2022-07-21 08:57:37,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:37,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2036 transitions. [2022-07-21 08:57:37,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.0909090909091) internal successors, (2036), 11 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:37,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 222.0) internal successors, (2664), 12 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:37,331 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 222.0) internal successors, (2664), 12 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:37,331 INFO L186 Difference]: Start difference. First operand has 194 places, 197 transitions, 426 flow. Second operand 11 states and 2036 transitions. [2022-07-21 08:57:37,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 217 transitions, 574 flow [2022-07-21 08:57:37,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 217 transitions, 562 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:57:37,349 INFO L242 Difference]: Finished difference. Result has 204 places, 209 transitions, 525 flow [2022-07-21 08:57:37,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=525, PETRI_PLACES=204, PETRI_TRANSITIONS=209} [2022-07-21 08:57:37,350 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 7 predicate places. [2022-07-21 08:57:37,350 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 209 transitions, 525 flow [2022-07-21 08:57:37,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.33333333333334) internal successors, (2750), 15 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:37,351 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:37,352 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:37,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:57:37,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:37,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:37,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:37,560 INFO L85 PathProgramCache]: Analyzing trace with hash -970353476, now seen corresponding path program 2 times [2022-07-21 08:57:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:37,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348023869] [2022-07-21 08:57:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:37,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:57:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348023869] [2022-07-21 08:57:37,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348023869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844028387] [2022-07-21 08:57:37,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 08:57:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:37,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:37,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:37,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:57:37,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 08:57:37,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:57:37,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:57:37,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 08:57:37,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:57:37,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844028387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:37,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:57:37,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-21 08:57:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802895793] [2022-07-21 08:57:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:37,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:57:37,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:37,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 209 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:37,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:37,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:37,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:38,110 INFO L129 PetriNetUnfolder]: 111/654 cut-off events. [2022-07-21 08:57:38,111 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-21 08:57:38,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 654 events. 111/654 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3171 event pairs, 7 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 883. Up to 70 conditions per place. [2022-07-21 08:57:38,115 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 50 selfloop transitions, 10 changer transitions 1/250 dead transitions. [2022-07-21 08:57:38,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 250 transitions, 734 flow [2022-07-21 08:57:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:57:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:57:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1583 transitions. [2022-07-21 08:57:38,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8913288288288288 [2022-07-21 08:57:38,118 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1583 transitions. [2022-07-21 08:57:38,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1583 transitions. [2022-07-21 08:57:38,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:38,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1583 transitions. [2022-07-21 08:57:38,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.875) internal successors, (1583), 8 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,123 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,124 INFO L186 Difference]: Start difference. First operand has 204 places, 209 transitions, 525 flow. Second operand 8 states and 1583 transitions. [2022-07-21 08:57:38,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 250 transitions, 734 flow [2022-07-21 08:57:38,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 250 transitions, 717 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-21 08:57:38,128 INFO L242 Difference]: Finished difference. Result has 213 places, 216 transitions, 571 flow [2022-07-21 08:57:38,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=571, PETRI_PLACES=213, PETRI_TRANSITIONS=216} [2022-07-21 08:57:38,129 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 16 predicate places. [2022-07-21 08:57:38,130 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 216 transitions, 571 flow [2022-07-21 08:57:38,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:38,130 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:38,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 08:57:38,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 08:57:38,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1651109514, now seen corresponding path program 3 times [2022-07-21 08:57:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:38,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999577252] [2022-07-21 08:57:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:57:38,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999577252] [2022-07-21 08:57:38,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999577252] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212503746] [2022-07-21 08:57:38,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 08:57:38,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:38,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:38,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:38,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:57:38,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-21 08:57:38,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:57:38,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:57:38,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 08:57:38,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:57:38,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212503746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:38,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:57:38,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-21 08:57:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943134761] [2022-07-21 08:57:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:57:38,648 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:38,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 216 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:38,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:38,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:38,976 INFO L129 PetriNetUnfolder]: 251/1448 cut-off events. [2022-07-21 08:57:38,976 INFO L130 PetriNetUnfolder]: For 153/156 co-relation queries the response was YES. [2022-07-21 08:57:38,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 1448 events. 251/1448 cut-off events. For 153/156 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10540 event pairs, 4 based on Foata normal form. 0/1300 useless extension candidates. Maximal degree in co-relation 1987. Up to 112 conditions per place. [2022-07-21 08:57:38,983 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 53 selfloop transitions, 10 changer transitions 1/260 dead transitions. [2022-07-21 08:57:38,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 260 transitions, 795 flow [2022-07-21 08:57:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:57:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:57:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1586 transitions. [2022-07-21 08:57:38,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8930180180180181 [2022-07-21 08:57:38,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1586 transitions. [2022-07-21 08:57:38,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1586 transitions. [2022-07-21 08:57:38,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:38,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1586 transitions. [2022-07-21 08:57:38,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.25) internal successors, (1586), 8 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,993 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:38,993 INFO L186 Difference]: Start difference. First operand has 213 places, 216 transitions, 571 flow. Second operand 8 states and 1586 transitions. [2022-07-21 08:57:38,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 260 transitions, 795 flow [2022-07-21 08:57:38,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 260 transitions, 795 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:57:38,999 INFO L242 Difference]: Finished difference. Result has 224 places, 223 transitions, 634 flow [2022-07-21 08:57:38,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=224, PETRI_TRANSITIONS=223} [2022-07-21 08:57:39,000 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 27 predicate places. [2022-07-21 08:57:39,000 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 223 transitions, 634 flow [2022-07-21 08:57:39,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:39,001 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:39,001 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:39,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 08:57:39,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:39,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1582815960, now seen corresponding path program 4 times [2022-07-21 08:57:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:39,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410299517] [2022-07-21 08:57:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:57:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:39,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410299517] [2022-07-21 08:57:39,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410299517] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:39,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622112756] [2022-07-21 08:57:39,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 08:57:39,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:39,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:39,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:57:39,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 08:57:39,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:57:39,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 08:57:39,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:57:39,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:57:39,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622112756] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:57:39,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:57:39,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-21 08:57:39,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004657483] [2022-07-21 08:57:39,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:57:39,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:57:39,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:57:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:57:39,647 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-07-21 08:57:39,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 223 transitions, 634 flow. Second operand has 22 states, 22 states have (on average 183.1818181818182) internal successors, (4030), 22 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:39,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:39,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-07-21 08:57:39,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:39,972 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([615] thread2EXIT-->L90-2: Formula: (and (= 0 v_thread2Thread1of1ForFork1_thidvar2_4) (= v_thread2Thread1of1ForFork1_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem24#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) (= 0 v_thread2Thread1of1ForFork1_thidvar1_4)) InVars {thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} OutVars{thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} AuxVars[] AssignedVars[][232], [Black: 1501#(or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0)))), Black: 222#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 2155#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1089#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 1095#(and (< |ULTIMATE.start_create_fresh_int_array_~i~2#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), 211#true, Black: 2157#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 2052#(or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0))), Black: 1633#true, 1622#(and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), Black: 2153#(and (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 0))) (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0)))), 3197#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), Black: 1100#true, 126#L90-2true, Black: 1620#(and (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0) (= ~isNullA~0 0))) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))))), Black: 1624#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), 1081#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|))]) [2022-07-21 08:57:39,973 INFO L384 tUnfolder$Statistics]: this new event has 218 ancestors and is cut-off event [2022-07-21 08:57:39,973 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-21 08:57:39,973 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-21 08:57:39,973 INFO L387 tUnfolder$Statistics]: existing Event has 189 ancestors and is cut-off event [2022-07-21 08:57:39,974 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([615] thread2EXIT-->L90-2: Formula: (and (= 0 v_thread2Thread1of1ForFork1_thidvar2_4) (= v_thread2Thread1of1ForFork1_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem24#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) (= 0 v_thread2Thread1of1ForFork1_thidvar1_4)) InVars {thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} OutVars{thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} AuxVars[] AssignedVars[][232], [Black: 222#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), Black: 1501#(or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0)))), 2155#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1089#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 1095#(and (< |ULTIMATE.start_create_fresh_int_array_~i~2#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), 211#true, Black: 2157#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 2052#(or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0))), Black: 1633#true, 1622#(and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), Black: 2153#(and (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 0))) (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0)))), 3197#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), Black: 1100#true, 126#L90-2true, Black: 1620#(and (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0) (= ~isNullA~0 0))) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))))), Black: 1624#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), 1081#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|))]) [2022-07-21 08:57:39,974 INFO L384 tUnfolder$Statistics]: this new event has 205 ancestors and is cut-off event [2022-07-21 08:57:39,974 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-21 08:57:39,974 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-21 08:57:39,974 INFO L387 tUnfolder$Statistics]: existing Event has 189 ancestors and is cut-off event [2022-07-21 08:57:39,974 INFO L387 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event [2022-07-21 08:57:39,976 INFO L129 PetriNetUnfolder]: 75/703 cut-off events. [2022-07-21 08:57:39,976 INFO L130 PetriNetUnfolder]: For 139/150 co-relation queries the response was YES. [2022-07-21 08:57:39,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 703 events. 75/703 cut-off events. For 139/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3455 event pairs, 0 based on Foata normal form. 4/660 useless extension candidates. Maximal degree in co-relation 1027. Up to 32 conditions per place. [2022-07-21 08:57:39,980 INFO L132 encePairwiseOnDemand]: 206/222 looper letters, 38 selfloop transitions, 34 changer transitions 0/251 dead transitions. [2022-07-21 08:57:39,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 251 transitions, 890 flow [2022-07-21 08:57:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:57:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:57:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3136 transitions. [2022-07-21 08:57:39,985 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.830948595654478 [2022-07-21 08:57:39,986 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3136 transitions. [2022-07-21 08:57:39,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3136 transitions. [2022-07-21 08:57:39,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:39,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3136 transitions. [2022-07-21 08:57:39,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.47058823529412) internal successors, (3136), 17 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:39,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 222.0) internal successors, (3996), 18 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:39,997 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 222.0) internal successors, (3996), 18 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:39,997 INFO L186 Difference]: Start difference. First operand has 224 places, 223 transitions, 634 flow. Second operand 17 states and 3136 transitions. [2022-07-21 08:57:39,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 251 transitions, 890 flow [2022-07-21 08:57:39,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 251 transitions, 890 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:57:40,002 INFO L242 Difference]: Finished difference. Result has 242 places, 237 transitions, 809 flow [2022-07-21 08:57:40,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=809, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2022-07-21 08:57:40,003 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 45 predicate places. [2022-07-21 08:57:40,003 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 809 flow [2022-07-21 08:57:40,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 183.1818181818182) internal successors, (4030), 22 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,005 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:40,005 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:40,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:57:40,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:40,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:40,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash -6964142, now seen corresponding path program 5 times [2022-07-21 08:57:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:40,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115530679] [2022-07-21 08:57:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:40,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:40,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115530679] [2022-07-21 08:57:40,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115530679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:40,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:40,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418811659] [2022-07-21 08:57:40,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:40,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:40,339 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:40,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:40,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:40,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:40,605 INFO L129 PetriNetUnfolder]: 364/1845 cut-off events. [2022-07-21 08:57:40,605 INFO L130 PetriNetUnfolder]: For 641/672 co-relation queries the response was YES. [2022-07-21 08:57:40,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 1845 events. 364/1845 cut-off events. For 641/672 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12641 event pairs, 48 based on Foata normal form. 21/1703 useless extension candidates. Maximal degree in co-relation 2962. Up to 239 conditions per place. [2022-07-21 08:57:40,617 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 40 selfloop transitions, 15 changer transitions 0/265 dead transitions. [2022-07-21 08:57:40,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 265 transitions, 1033 flow [2022-07-21 08:57:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2022-07-21 08:57:40,620 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8918918918918919 [2022-07-21 08:57:40,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2022-07-21 08:57:40,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2022-07-21 08:57:40,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:40,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2022-07-21 08:57:40,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,625 INFO L186 Difference]: Start difference. First operand has 242 places, 237 transitions, 809 flow. Second operand 6 states and 1188 transitions. [2022-07-21 08:57:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 265 transitions, 1033 flow [2022-07-21 08:57:40,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 265 transitions, 988 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-21 08:57:40,631 INFO L242 Difference]: Finished difference. Result has 243 places, 244 transitions, 871 flow [2022-07-21 08:57:40,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=871, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2022-07-21 08:57:40,632 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 46 predicate places. [2022-07-21 08:57:40,632 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 871 flow [2022-07-21 08:57:40,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,632 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:40,633 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:40,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:57:40,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:40,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1210663556, now seen corresponding path program 6 times [2022-07-21 08:57:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:40,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263485588] [2022-07-21 08:57:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:40,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263485588] [2022-07-21 08:57:40,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263485588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:40,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:40,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115099592] [2022-07-21 08:57:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:40,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:40,710 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:40,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 871 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:40,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:40,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:40,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:41,026 INFO L129 PetriNetUnfolder]: 412/1902 cut-off events. [2022-07-21 08:57:41,026 INFO L130 PetriNetUnfolder]: For 1228/1292 co-relation queries the response was YES. [2022-07-21 08:57:41,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1902 events. 412/1902 cut-off events. For 1228/1292 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13762 event pairs, 38 based on Foata normal form. 25/1756 useless extension candidates. Maximal degree in co-relation 3351. Up to 424 conditions per place. [2022-07-21 08:57:41,040 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 50 selfloop transitions, 15 changer transitions 0/275 dead transitions. [2022-07-21 08:57:41,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 275 transitions, 1142 flow [2022-07-21 08:57:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1190 transitions. [2022-07-21 08:57:41,043 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8933933933933934 [2022-07-21 08:57:41,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1190 transitions. [2022-07-21 08:57:41,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1190 transitions. [2022-07-21 08:57:41,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:41,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1190 transitions. [2022-07-21 08:57:41,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,047 INFO L186 Difference]: Start difference. First operand has 243 places, 244 transitions, 871 flow. Second operand 6 states and 1190 transitions. [2022-07-21 08:57:41,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 275 transitions, 1142 flow [2022-07-21 08:57:41,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 275 transitions, 1132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:57:41,054 INFO L242 Difference]: Finished difference. Result has 251 places, 250 transitions, 971 flow [2022-07-21 08:57:41,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=971, PETRI_PLACES=251, PETRI_TRANSITIONS=250} [2022-07-21 08:57:41,055 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 54 predicate places. [2022-07-21 08:57:41,055 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 250 transitions, 971 flow [2022-07-21 08:57:41,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:41,057 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:41,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:57:41,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:41,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:41,058 INFO L85 PathProgramCache]: Analyzing trace with hash 218927882, now seen corresponding path program 7 times [2022-07-21 08:57:41,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:41,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881231092] [2022-07-21 08:57:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:41,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:41,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881231092] [2022-07-21 08:57:41,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881231092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:41,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:41,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858747326] [2022-07-21 08:57:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:41,180 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:41,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 250 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:41,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:41,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:41,534 INFO L129 PetriNetUnfolder]: 471/2206 cut-off events. [2022-07-21 08:57:41,534 INFO L130 PetriNetUnfolder]: For 2089/2173 co-relation queries the response was YES. [2022-07-21 08:57:41,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4105 conditions, 2206 events. 471/2206 cut-off events. For 2089/2173 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17083 event pairs, 49 based on Foata normal form. 20/2018 useless extension candidates. Maximal degree in co-relation 4076. Up to 485 conditions per place. [2022-07-21 08:57:41,551 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 56 selfloop transitions, 17 changer transitions 0/283 dead transitions. [2022-07-21 08:57:41,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 283 transitions, 1290 flow [2022-07-21 08:57:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1193 transitions. [2022-07-21 08:57:41,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8956456456456456 [2022-07-21 08:57:41,554 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1193 transitions. [2022-07-21 08:57:41,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1193 transitions. [2022-07-21 08:57:41,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:41,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1193 transitions. [2022-07-21 08:57:41,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.83333333333334) internal successors, (1193), 6 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,559 INFO L186 Difference]: Start difference. First operand has 251 places, 250 transitions, 971 flow. Second operand 6 states and 1193 transitions. [2022-07-21 08:57:41,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 283 transitions, 1290 flow [2022-07-21 08:57:41,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 283 transitions, 1283 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 08:57:41,568 INFO L242 Difference]: Finished difference. Result has 259 places, 259 transitions, 1128 flow [2022-07-21 08:57:41,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1128, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-07-21 08:57:41,569 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 62 predicate places. [2022-07-21 08:57:41,569 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 1128 flow [2022-07-21 08:57:41,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,569 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:41,569 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:41,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:57:41,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2103399656, now seen corresponding path program 8 times [2022-07-21 08:57:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:41,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701569005] [2022-07-21 08:57:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:41,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:41,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701569005] [2022-07-21 08:57:41,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701569005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:41,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:41,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:41,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304359789] [2022-07-21 08:57:41,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:41,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:41,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 1128 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:41,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:41,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:41,914 INFO L129 PetriNetUnfolder]: 459/2121 cut-off events. [2022-07-21 08:57:41,915 INFO L130 PetriNetUnfolder]: For 2777/2870 co-relation queries the response was YES. [2022-07-21 08:57:41,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2121 events. 459/2121 cut-off events. For 2777/2870 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16141 event pairs, 35 based on Foata normal form. 38/1964 useless extension candidates. Maximal degree in co-relation 4179. Up to 494 conditions per place. [2022-07-21 08:57:41,969 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 50 selfloop transitions, 20 changer transitions 1/281 dead transitions. [2022-07-21 08:57:41,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 281 transitions, 1373 flow [2022-07-21 08:57:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2022-07-21 08:57:41,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8941441441441441 [2022-07-21 08:57:41,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2022-07-21 08:57:41,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2022-07-21 08:57:41,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:41,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2022-07-21 08:57:41,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,976 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,976 INFO L186 Difference]: Start difference. First operand has 259 places, 259 transitions, 1128 flow. Second operand 6 states and 1191 transitions. [2022-07-21 08:57:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 281 transitions, 1373 flow [2022-07-21 08:57:41,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 281 transitions, 1364 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-21 08:57:41,987 INFO L242 Difference]: Finished difference. Result has 264 places, 260 transitions, 1186 flow [2022-07-21 08:57:41,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1186, PETRI_PLACES=264, PETRI_TRANSITIONS=260} [2022-07-21 08:57:41,988 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 67 predicate places. [2022-07-21 08:57:41,988 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 260 transitions, 1186 flow [2022-07-21 08:57:41,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,988 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:41,988 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:41,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:57:41,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1785670614, now seen corresponding path program 9 times [2022-07-21 08:57:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:41,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404048179] [2022-07-21 08:57:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:42,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:42,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404048179] [2022-07-21 08:57:42,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404048179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:42,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:42,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252192956] [2022-07-21 08:57:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:42,053 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:42,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 260 transitions, 1186 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:42,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:42,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:42,373 INFO L129 PetriNetUnfolder]: 466/2163 cut-off events. [2022-07-21 08:57:42,374 INFO L130 PetriNetUnfolder]: For 3289/3375 co-relation queries the response was YES. [2022-07-21 08:57:42,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 2163 events. 466/2163 cut-off events. For 3289/3375 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16540 event pairs, 65 based on Foata normal form. 17/1972 useless extension candidates. Maximal degree in co-relation 4317. Up to 485 conditions per place. [2022-07-21 08:57:42,389 INFO L132 encePairwiseOnDemand]: 215/222 looper letters, 54 selfloop transitions, 11 changer transitions 3/278 dead transitions. [2022-07-21 08:57:42,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 278 transitions, 1416 flow [2022-07-21 08:57:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1182 transitions. [2022-07-21 08:57:42,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8873873873873874 [2022-07-21 08:57:42,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1182 transitions. [2022-07-21 08:57:42,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1182 transitions. [2022-07-21 08:57:42,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:42,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1182 transitions. [2022-07-21 08:57:42,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,396 INFO L186 Difference]: Start difference. First operand has 264 places, 260 transitions, 1186 flow. Second operand 6 states and 1182 transitions. [2022-07-21 08:57:42,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 278 transitions, 1416 flow [2022-07-21 08:57:42,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 278 transitions, 1368 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-21 08:57:42,406 INFO L242 Difference]: Finished difference. Result has 266 places, 260 transitions, 1179 flow [2022-07-21 08:57:42,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1179, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2022-07-21 08:57:42,407 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 69 predicate places. [2022-07-21 08:57:42,407 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 1179 flow [2022-07-21 08:57:42,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,407 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:42,408 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:42,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:57:42,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1499166498, now seen corresponding path program 10 times [2022-07-21 08:57:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:42,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917146765] [2022-07-21 08:57:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:42,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:42,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917146765] [2022-07-21 08:57:42,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917146765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:42,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:42,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:42,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67999399] [2022-07-21 08:57:42,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:42,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:42,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:42,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:42,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:42,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:42,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 1179 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:42,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:42,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:42,781 INFO L129 PetriNetUnfolder]: 462/2141 cut-off events. [2022-07-21 08:57:42,781 INFO L130 PetriNetUnfolder]: For 3174/3260 co-relation queries the response was YES. [2022-07-21 08:57:42,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 2141 events. 462/2141 cut-off events. For 3174/3260 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16262 event pairs, 64 based on Foata normal form. 29/1965 useless extension candidates. Maximal degree in co-relation 4208. Up to 485 conditions per place. [2022-07-21 08:57:42,798 INFO L132 encePairwiseOnDemand]: 215/222 looper letters, 46 selfloop transitions, 17 changer transitions 1/274 dead transitions. [2022-07-21 08:57:42,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 274 transitions, 1370 flow [2022-07-21 08:57:42,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:42,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1185 transitions. [2022-07-21 08:57:42,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8896396396396397 [2022-07-21 08:57:42,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1185 transitions. [2022-07-21 08:57:42,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1185 transitions. [2022-07-21 08:57:42,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:42,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1185 transitions. [2022-07-21 08:57:42,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,805 INFO L186 Difference]: Start difference. First operand has 266 places, 260 transitions, 1179 flow. Second operand 6 states and 1185 transitions. [2022-07-21 08:57:42,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 274 transitions, 1370 flow [2022-07-21 08:57:42,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 274 transitions, 1342 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-21 08:57:42,816 INFO L242 Difference]: Finished difference. Result has 266 places, 260 transitions, 1190 flow [2022-07-21 08:57:42,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2022-07-21 08:57:42,817 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 69 predicate places. [2022-07-21 08:57:42,817 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 1190 flow [2022-07-21 08:57:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:42,818 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:42,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:57:42,818 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:42,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2013126836, now seen corresponding path program 11 times [2022-07-21 08:57:42,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:42,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934779472] [2022-07-21 08:57:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:42,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:42,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:42,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934779472] [2022-07-21 08:57:42,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934779472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:42,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:42,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:42,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155043628] [2022-07-21 08:57:42,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:42,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:42,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:42,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:42,896 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:42,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 1190 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:42,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:42,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:43,502 INFO L129 PetriNetUnfolder]: 838/5234 cut-off events. [2022-07-21 08:57:43,503 INFO L130 PetriNetUnfolder]: For 4988/5051 co-relation queries the response was YES. [2022-07-21 08:57:43,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 5234 events. 838/5234 cut-off events. For 4988/5051 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 53127 event pairs, 194 based on Foata normal form. 29/4752 useless extension candidates. Maximal degree in co-relation 8614. Up to 386 conditions per place. [2022-07-21 08:57:43,543 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 44 selfloop transitions, 15 changer transitions 0/292 dead transitions. [2022-07-21 08:57:43,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 292 transitions, 1434 flow [2022-07-21 08:57:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2022-07-21 08:57:43,545 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8948948948948949 [2022-07-21 08:57:43,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1192 transitions. [2022-07-21 08:57:43,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1192 transitions. [2022-07-21 08:57:43,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:43,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1192 transitions. [2022-07-21 08:57:43,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:43,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:43,549 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:43,549 INFO L186 Difference]: Start difference. First operand has 266 places, 260 transitions, 1190 flow. Second operand 6 states and 1192 transitions. [2022-07-21 08:57:43,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 292 transitions, 1434 flow [2022-07-21 08:57:43,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 292 transitions, 1411 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-07-21 08:57:43,565 INFO L242 Difference]: Finished difference. Result has 270 places, 267 transitions, 1274 flow [2022-07-21 08:57:43,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1274, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-07-21 08:57:43,566 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 73 predicate places. [2022-07-21 08:57:43,566 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 1274 flow [2022-07-21 08:57:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:43,566 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:43,566 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:57:43,567 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash 742349944, now seen corresponding path program 12 times [2022-07-21 08:57:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:43,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198162749] [2022-07-21 08:57:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:43,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:43,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198162749] [2022-07-21 08:57:43,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198162749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:43,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:43,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331269852] [2022-07-21 08:57:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:43,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:43,632 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:43,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 1274 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:43,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:43,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:43,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:44,231 INFO L129 PetriNetUnfolder]: 923/5375 cut-off events. [2022-07-21 08:57:44,231 INFO L130 PetriNetUnfolder]: For 5506/5596 co-relation queries the response was YES. [2022-07-21 08:57:44,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9291 conditions, 5375 events. 923/5375 cut-off events. For 5506/5596 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 56125 event pairs, 165 based on Foata normal form. 38/4948 useless extension candidates. Maximal degree in co-relation 9253. Up to 707 conditions per place. [2022-07-21 08:57:44,274 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 55 selfloop transitions, 20 changer transitions 0/308 dead transitions. [2022-07-21 08:57:44,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 308 transitions, 1614 flow [2022-07-21 08:57:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2022-07-21 08:57:44,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8993993993993994 [2022-07-21 08:57:44,277 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2022-07-21 08:57:44,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2022-07-21 08:57:44,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:44,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2022-07-21 08:57:44,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:44,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:44,280 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:44,280 INFO L186 Difference]: Start difference. First operand has 270 places, 267 transitions, 1274 flow. Second operand 6 states and 1198 transitions. [2022-07-21 08:57:44,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 308 transitions, 1614 flow [2022-07-21 08:57:44,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 1603 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:57:44,300 INFO L242 Difference]: Finished difference. Result has 279 places, 278 transitions, 1446 flow [2022-07-21 08:57:44,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1446, PETRI_PLACES=279, PETRI_TRANSITIONS=278} [2022-07-21 08:57:44,301 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 82 predicate places. [2022-07-21 08:57:44,301 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 278 transitions, 1446 flow [2022-07-21 08:57:44,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:44,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:44,301 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:44,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:57:44,302 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1311793190, now seen corresponding path program 13 times [2022-07-21 08:57:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:44,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111008529] [2022-07-21 08:57:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111008529] [2022-07-21 08:57:44,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111008529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:44,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:44,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181776314] [2022-07-21 08:57:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:44,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:44,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 278 transitions, 1446 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:44,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:44,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:44,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:45,063 INFO L129 PetriNetUnfolder]: 933/5364 cut-off events. [2022-07-21 08:57:45,063 INFO L130 PetriNetUnfolder]: For 6813/6981 co-relation queries the response was YES. [2022-07-21 08:57:45,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9964 conditions, 5364 events. 933/5364 cut-off events. For 6813/6981 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 56673 event pairs, 253 based on Foata normal form. 50/4944 useless extension candidates. Maximal degree in co-relation 9922. Up to 909 conditions per place. [2022-07-21 08:57:45,173 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 57 selfloop transitions, 19 changer transitions 0/309 dead transitions. [2022-07-21 08:57:45,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 309 transitions, 1756 flow [2022-07-21 08:57:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1195 transitions. [2022-07-21 08:57:45,176 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8971471471471472 [2022-07-21 08:57:45,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1195 transitions. [2022-07-21 08:57:45,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1195 transitions. [2022-07-21 08:57:45,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:45,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1195 transitions. [2022-07-21 08:57:45,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:45,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:45,180 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:45,180 INFO L186 Difference]: Start difference. First operand has 279 places, 278 transitions, 1446 flow. Second operand 6 states and 1195 transitions. [2022-07-21 08:57:45,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 309 transitions, 1756 flow [2022-07-21 08:57:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 309 transitions, 1742 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-07-21 08:57:45,202 INFO L242 Difference]: Finished difference. Result has 288 places, 283 transitions, 1566 flow [2022-07-21 08:57:45,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1566, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2022-07-21 08:57:45,203 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 91 predicate places. [2022-07-21 08:57:45,203 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 1566 flow [2022-07-21 08:57:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:45,204 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:45,204 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:45,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:57:45,204 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1190843316, now seen corresponding path program 1 times [2022-07-21 08:57:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:45,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343526483] [2022-07-21 08:57:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:45,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:45,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343526483] [2022-07-21 08:57:45,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343526483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:45,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:45,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:45,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313914228] [2022-07-21 08:57:45,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:45,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:45,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:45,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:45,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:45,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:45,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 1566 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:45,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:45,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:45,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:46,127 INFO L129 PetriNetUnfolder]: 951/5605 cut-off events. [2022-07-21 08:57:46,128 INFO L130 PetriNetUnfolder]: For 7884/8052 co-relation queries the response was YES. [2022-07-21 08:57:46,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10459 conditions, 5605 events. 951/5605 cut-off events. For 7884/8052 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 59678 event pairs, 153 based on Foata normal form. 34/5135 useless extension candidates. Maximal degree in co-relation 10412. Up to 509 conditions per place. [2022-07-21 08:57:46,161 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 65 selfloop transitions, 11 changer transitions 6/315 dead transitions. [2022-07-21 08:57:46,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 315 transitions, 1950 flow [2022-07-21 08:57:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1186 transitions. [2022-07-21 08:57:46,163 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8903903903903904 [2022-07-21 08:57:46,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1186 transitions. [2022-07-21 08:57:46,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1186 transitions. [2022-07-21 08:57:46,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:46,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1186 transitions. [2022-07-21 08:57:46,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:46,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:46,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:46,167 INFO L186 Difference]: Start difference. First operand has 288 places, 283 transitions, 1566 flow. Second operand 6 states and 1186 transitions. [2022-07-21 08:57:46,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 315 transitions, 1950 flow [2022-07-21 08:57:46,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 315 transitions, 1925 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-07-21 08:57:46,190 INFO L242 Difference]: Finished difference. Result has 296 places, 284 transitions, 1602 flow [2022-07-21 08:57:46,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1602, PETRI_PLACES=296, PETRI_TRANSITIONS=284} [2022-07-21 08:57:46,191 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 99 predicate places. [2022-07-21 08:57:46,191 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 284 transitions, 1602 flow [2022-07-21 08:57:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:46,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:46,192 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:57:46,192 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1309811676, now seen corresponding path program 2 times [2022-07-21 08:57:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:46,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177148534] [2022-07-21 08:57:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:46,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177148534] [2022-07-21 08:57:46,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177148534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:46,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:46,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734368882] [2022-07-21 08:57:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:46,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:46,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 284 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:46,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:46,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:46,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:47,109 INFO L129 PetriNetUnfolder]: 931/5551 cut-off events. [2022-07-21 08:57:47,109 INFO L130 PetriNetUnfolder]: For 8187/8352 co-relation queries the response was YES. [2022-07-21 08:57:47,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 5551 events. 931/5551 cut-off events. For 8187/8352 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 58997 event pairs, 103 based on Foata normal form. 55/5124 useless extension candidates. Maximal degree in co-relation 10405. Up to 509 conditions per place. [2022-07-21 08:57:47,145 INFO L132 encePairwiseOnDemand]: 211/222 looper letters, 59 selfloop transitions, 27 changer transitions 2/321 dead transitions. [2022-07-21 08:57:47,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 321 transitions, 1971 flow [2022-07-21 08:57:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2022-07-21 08:57:47,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9024024024024024 [2022-07-21 08:57:47,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2022-07-21 08:57:47,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2022-07-21 08:57:47,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:47,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2022-07-21 08:57:47,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:47,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:47,151 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:47,151 INFO L186 Difference]: Start difference. First operand has 296 places, 284 transitions, 1602 flow. Second operand 6 states and 1202 transitions. [2022-07-21 08:57:47,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 321 transitions, 1971 flow [2022-07-21 08:57:47,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 321 transitions, 1949 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-21 08:57:47,176 INFO L242 Difference]: Finished difference. Result has 299 places, 291 transitions, 1764 flow [2022-07-21 08:57:47,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1764, PETRI_PLACES=299, PETRI_TRANSITIONS=291} [2022-07-21 08:57:47,177 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 102 predicate places. [2022-07-21 08:57:47,177 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 291 transitions, 1764 flow [2022-07-21 08:57:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:47,177 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:47,178 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:47,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:57:47,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1311903992, now seen corresponding path program 3 times [2022-07-21 08:57:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:47,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868255127] [2022-07-21 08:57:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:47,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868255127] [2022-07-21 08:57:47,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868255127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:47,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:47,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:47,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130737253] [2022-07-21 08:57:47,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:47,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:47,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:47,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:47,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:47,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 291 transitions, 1764 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:47,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:47,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:47,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:47,968 INFO L129 PetriNetUnfolder]: 899/5206 cut-off events. [2022-07-21 08:57:47,969 INFO L130 PetriNetUnfolder]: For 9083/9251 co-relation queries the response was YES. [2022-07-21 08:57:47,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10263 conditions, 5206 events. 899/5206 cut-off events. For 9083/9251 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 53997 event pairs, 145 based on Foata normal form. 50/4793 useless extension candidates. Maximal degree in co-relation 10210. Up to 509 conditions per place. [2022-07-21 08:57:48,012 INFO L132 encePairwiseOnDemand]: 212/222 looper letters, 56 selfloop transitions, 23 changer transitions 5/317 dead transitions. [2022-07-21 08:57:48,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 317 transitions, 2049 flow [2022-07-21 08:57:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1194 transitions. [2022-07-21 08:57:48,014 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8963963963963963 [2022-07-21 08:57:48,014 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1194 transitions. [2022-07-21 08:57:48,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1194 transitions. [2022-07-21 08:57:48,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:48,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1194 transitions. [2022-07-21 08:57:48,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,018 INFO L186 Difference]: Start difference. First operand has 299 places, 291 transitions, 1764 flow. Second operand 6 states and 1194 transitions. [2022-07-21 08:57:48,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 317 transitions, 2049 flow [2022-07-21 08:57:48,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 317 transitions, 2034 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 08:57:48,047 INFO L242 Difference]: Finished difference. Result has 304 places, 291 transitions, 1817 flow [2022-07-21 08:57:48,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1817, PETRI_PLACES=304, PETRI_TRANSITIONS=291} [2022-07-21 08:57:48,048 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 107 predicate places. [2022-07-21 08:57:48,048 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 291 transitions, 1817 flow [2022-07-21 08:57:48,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:48,049 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:57:48,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1139579204, now seen corresponding path program 1 times [2022-07-21 08:57:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:48,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240187335] [2022-07-21 08:57:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:48,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240187335] [2022-07-21 08:57:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240187335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:48,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:48,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235415336] [2022-07-21 08:57:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:48,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:48,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 291 transitions, 1817 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:48,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:48,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:48,823 INFO L129 PetriNetUnfolder]: 921/4700 cut-off events. [2022-07-21 08:57:48,823 INFO L130 PetriNetUnfolder]: For 8728/8854 co-relation queries the response was YES. [2022-07-21 08:57:48,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 4700 events. 921/4700 cut-off events. For 8728/8854 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 47431 event pairs, 122 based on Foata normal form. 43/4286 useless extension candidates. Maximal degree in co-relation 9447. Up to 596 conditions per place. [2022-07-21 08:57:48,868 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 52 selfloop transitions, 24 changer transitions 1/316 dead transitions. [2022-07-21 08:57:48,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 316 transitions, 2100 flow [2022-07-21 08:57:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2022-07-21 08:57:48,870 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8941441441441441 [2022-07-21 08:57:48,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2022-07-21 08:57:48,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2022-07-21 08:57:48,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:48,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2022-07-21 08:57:48,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,873 INFO L186 Difference]: Start difference. First operand has 304 places, 291 transitions, 1817 flow. Second operand 6 states and 1191 transitions. [2022-07-21 08:57:48,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 316 transitions, 2100 flow [2022-07-21 08:57:48,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 316 transitions, 2042 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-21 08:57:48,900 INFO L242 Difference]: Finished difference. Result has 305 places, 294 transitions, 1870 flow [2022-07-21 08:57:48,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1870, PETRI_PLACES=305, PETRI_TRANSITIONS=294} [2022-07-21 08:57:48,900 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 108 predicate places. [2022-07-21 08:57:48,901 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 294 transitions, 1870 flow [2022-07-21 08:57:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,901 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:48,901 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:48,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:57:48,901 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash 551726720, now seen corresponding path program 2 times [2022-07-21 08:57:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:48,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404860420] [2022-07-21 08:57:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:48,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404860420] [2022-07-21 08:57:48,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404860420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:48,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:48,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688489155] [2022-07-21 08:57:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:48,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:48,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:48,954 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:48,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 294 transitions, 1870 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:48,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:48,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:48,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:49,717 INFO L129 PetriNetUnfolder]: 910/4864 cut-off events. [2022-07-21 08:57:49,717 INFO L130 PetriNetUnfolder]: For 10201/10319 co-relation queries the response was YES. [2022-07-21 08:57:49,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10035 conditions, 4864 events. 910/4864 cut-off events. For 10201/10319 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 49884 event pairs, 133 based on Foata normal form. 27/4416 useless extension candidates. Maximal degree in co-relation 9979. Up to 662 conditions per place. [2022-07-21 08:57:49,768 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 60 selfloop transitions, 13 changer transitions 3/315 dead transitions. [2022-07-21 08:57:49,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 315 transitions, 2162 flow [2022-07-21 08:57:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1182 transitions. [2022-07-21 08:57:49,770 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8873873873873874 [2022-07-21 08:57:49,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1182 transitions. [2022-07-21 08:57:49,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1182 transitions. [2022-07-21 08:57:49,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:49,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1182 transitions. [2022-07-21 08:57:49,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:49,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:49,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:49,773 INFO L186 Difference]: Start difference. First operand has 305 places, 294 transitions, 1870 flow. Second operand 6 states and 1182 transitions. [2022-07-21 08:57:49,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 315 transitions, 2162 flow [2022-07-21 08:57:49,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 315 transitions, 2133 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-21 08:57:49,803 INFO L242 Difference]: Finished difference. Result has 310 places, 295 transitions, 1906 flow [2022-07-21 08:57:49,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1906, PETRI_PLACES=310, PETRI_TRANSITIONS=295} [2022-07-21 08:57:49,803 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 113 predicate places. [2022-07-21 08:57:49,803 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 295 transitions, 1906 flow [2022-07-21 08:57:49,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:49,804 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:49,804 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:57:49,804 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2024842678, now seen corresponding path program 3 times [2022-07-21 08:57:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224741416] [2022-07-21 08:57:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:49,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224741416] [2022-07-21 08:57:49,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224741416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:49,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:49,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468832182] [2022-07-21 08:57:49,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:49,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:49,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:49,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 295 transitions, 1906 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:49,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:49,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:49,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:50,646 INFO L129 PetriNetUnfolder]: 895/4656 cut-off events. [2022-07-21 08:57:50,647 INFO L130 PetriNetUnfolder]: For 10414/10538 co-relation queries the response was YES. [2022-07-21 08:57:50,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9772 conditions, 4656 events. 895/4656 cut-off events. For 10414/10538 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 46983 event pairs, 132 based on Foata normal form. 39/4243 useless extension candidates. Maximal degree in co-relation 9713. Up to 621 conditions per place. [2022-07-21 08:57:50,699 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 49 selfloop transitions, 20 changer transitions 4/312 dead transitions. [2022-07-21 08:57:50,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 312 transitions, 2148 flow [2022-07-21 08:57:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1183 transitions. [2022-07-21 08:57:50,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8881381381381381 [2022-07-21 08:57:50,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1183 transitions. [2022-07-21 08:57:50,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1183 transitions. [2022-07-21 08:57:50,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:50,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1183 transitions. [2022-07-21 08:57:50,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.16666666666666) internal successors, (1183), 6 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:50,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:50,704 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:50,704 INFO L186 Difference]: Start difference. First operand has 310 places, 295 transitions, 1906 flow. Second operand 6 states and 1183 transitions. [2022-07-21 08:57:50,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 312 transitions, 2148 flow [2022-07-21 08:57:50,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 312 transitions, 2122 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-21 08:57:50,735 INFO L242 Difference]: Finished difference. Result has 311 places, 294 transitions, 1910 flow [2022-07-21 08:57:50,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1910, PETRI_PLACES=311, PETRI_TRANSITIONS=294} [2022-07-21 08:57:50,736 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 114 predicate places. [2022-07-21 08:57:50,736 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 294 transitions, 1910 flow [2022-07-21 08:57:50,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:50,737 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:50,737 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:50,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:57:50,737 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1667159910, now seen corresponding path program 4 times [2022-07-21 08:57:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:50,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901025331] [2022-07-21 08:57:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:50,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:50,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:50,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901025331] [2022-07-21 08:57:50,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901025331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:50,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:50,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:50,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660484701] [2022-07-21 08:57:50,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:50,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:50,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:50,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:50,831 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:50,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 294 transitions, 1910 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:50,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:50,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:50,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:51,647 INFO L129 PetriNetUnfolder]: 860/5033 cut-off events. [2022-07-21 08:57:51,648 INFO L130 PetriNetUnfolder]: For 11341/11516 co-relation queries the response was YES. [2022-07-21 08:57:51,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 5033 events. 860/5033 cut-off events. For 11341/11516 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 51583 event pairs, 209 based on Foata normal form. 41/4640 useless extension candidates. Maximal degree in co-relation 10212. Up to 830 conditions per place. [2022-07-21 08:57:51,705 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 66 selfloop transitions, 16 changer transitions 4/322 dead transitions. [2022-07-21 08:57:51,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 322 transitions, 2231 flow [2022-07-21 08:57:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2022-07-21 08:57:51,707 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8941441441441441 [2022-07-21 08:57:51,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2022-07-21 08:57:51,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2022-07-21 08:57:51,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:51,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2022-07-21 08:57:51,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:51,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:51,710 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:51,710 INFO L186 Difference]: Start difference. First operand has 311 places, 294 transitions, 1910 flow. Second operand 6 states and 1191 transitions. [2022-07-21 08:57:51,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 322 transitions, 2231 flow [2022-07-21 08:57:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 322 transitions, 2156 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-21 08:57:51,749 INFO L242 Difference]: Finished difference. Result has 308 places, 294 transitions, 1872 flow [2022-07-21 08:57:51,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1872, PETRI_PLACES=308, PETRI_TRANSITIONS=294} [2022-07-21 08:57:51,750 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 111 predicate places. [2022-07-21 08:57:51,750 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 294 transitions, 1872 flow [2022-07-21 08:57:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:51,751 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:51,751 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:51,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:57:51,751 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1828288132, now seen corresponding path program 5 times [2022-07-21 08:57:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:51,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865613333] [2022-07-21 08:57:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:51,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865613333] [2022-07-21 08:57:51,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865613333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:51,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:51,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:51,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177762151] [2022-07-21 08:57:51,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:51,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:51,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:51,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:51,828 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:51,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 294 transitions, 1872 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:51,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:51,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:51,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:52,607 INFO L129 PetriNetUnfolder]: 843/4837 cut-off events. [2022-07-21 08:57:52,607 INFO L130 PetriNetUnfolder]: For 9543/9697 co-relation queries the response was YES. [2022-07-21 08:57:52,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 4837 events. 843/4837 cut-off events. For 9543/9697 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 48991 event pairs, 199 based on Foata normal form. 43/4463 useless extension candidates. Maximal degree in co-relation 9718. Up to 830 conditions per place. [2022-07-21 08:57:52,659 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 63 selfloop transitions, 22 changer transitions 2/323 dead transitions. [2022-07-21 08:57:52,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 323 transitions, 2170 flow [2022-07-21 08:57:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1199 transitions. [2022-07-21 08:57:52,661 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9001501501501501 [2022-07-21 08:57:52,661 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1199 transitions. [2022-07-21 08:57:52,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1199 transitions. [2022-07-21 08:57:52,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:52,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1199 transitions. [2022-07-21 08:57:52,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.83333333333334) internal successors, (1199), 6 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:52,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:52,664 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:52,664 INFO L186 Difference]: Start difference. First operand has 308 places, 294 transitions, 1872 flow. Second operand 6 states and 1199 transitions. [2022-07-21 08:57:52,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 323 transitions, 2170 flow [2022-07-21 08:57:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 323 transitions, 2122 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-21 08:57:52,700 INFO L242 Difference]: Finished difference. Result has 310 places, 296 transitions, 1924 flow [2022-07-21 08:57:52,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=310, PETRI_TRANSITIONS=296} [2022-07-21 08:57:52,700 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 113 predicate places. [2022-07-21 08:57:52,700 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 296 transitions, 1924 flow [2022-07-21 08:57:52,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:52,701 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:52,701 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:52,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:57:52,701 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1434153486, now seen corresponding path program 6 times [2022-07-21 08:57:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:52,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119269021] [2022-07-21 08:57:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:52,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:52,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119269021] [2022-07-21 08:57:52,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119269021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:52,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:52,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:57:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177034489] [2022-07-21 08:57:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:57:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:57:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:57:52,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-21 08:57:52,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 296 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:52,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:52,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-21 08:57:52,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:53,457 INFO L129 PetriNetUnfolder]: 828/4698 cut-off events. [2022-07-21 08:57:53,457 INFO L130 PetriNetUnfolder]: For 9511/9662 co-relation queries the response was YES. [2022-07-21 08:57:53,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9658 conditions, 4698 events. 828/4698 cut-off events. For 9511/9662 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 47325 event pairs, 141 based on Foata normal form. 43/4352 useless extension candidates. Maximal degree in co-relation 9600. Up to 699 conditions per place. [2022-07-21 08:57:53,502 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 59 selfloop transitions, 24 changer transitions 3/322 dead transitions. [2022-07-21 08:57:53,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 322 transitions, 2197 flow [2022-07-21 08:57:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:57:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:57:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-07-21 08:57:53,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8978978978978979 [2022-07-21 08:57:53,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-07-21 08:57:53,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-07-21 08:57:53,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:53,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-07-21 08:57:53,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:53,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:53,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:53,506 INFO L186 Difference]: Start difference. First operand has 310 places, 296 transitions, 1924 flow. Second operand 6 states and 1196 transitions. [2022-07-21 08:57:53,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 322 transitions, 2197 flow [2022-07-21 08:57:53,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 322 transitions, 2166 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-21 08:57:53,542 INFO L242 Difference]: Finished difference. Result has 312 places, 295 transitions, 1927 flow [2022-07-21 08:57:53,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1927, PETRI_PLACES=312, PETRI_TRANSITIONS=295} [2022-07-21 08:57:53,543 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 115 predicate places. [2022-07-21 08:57:53,543 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 295 transitions, 1927 flow [2022-07-21 08:57:53,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:53,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:53,544 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:53,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:57:53,544 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:57:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash -458541530, now seen corresponding path program 1 times [2022-07-21 08:57:53,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:53,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283115565] [2022-07-21 08:57:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:57:53,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:53,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283115565] [2022-07-21 08:57:53,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283115565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:53,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:53,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:57:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795435895] [2022-07-21 08:57:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:57:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:57:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:57:53,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-21 08:57:53,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 295 transitions, 1927 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:53,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:53,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-21 08:57:53,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:00,064 INFO L129 PetriNetUnfolder]: 14111/37252 cut-off events. [2022-07-21 08:58:00,064 INFO L130 PetriNetUnfolder]: For 75199/75319 co-relation queries the response was YES. [2022-07-21 08:58:00,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81343 conditions, 37252 events. 14111/37252 cut-off events. For 75199/75319 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 449104 event pairs, 4300 based on Foata normal form. 35/33847 useless extension candidates. Maximal degree in co-relation 81285. Up to 6886 conditions per place. [2022-07-21 08:58:00,556 INFO L132 encePairwiseOnDemand]: 194/222 looper letters, 276 selfloop transitions, 81 changer transitions 0/551 dead transitions. [2022-07-21 08:58:00,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 551 transitions, 4212 flow [2022-07-21 08:58:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:58:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:58:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3740 transitions. [2022-07-21 08:58:00,561 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7324716020368194 [2022-07-21 08:58:00,561 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3740 transitions. [2022-07-21 08:58:00,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3740 transitions. [2022-07-21 08:58:00,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:00,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3740 transitions. [2022-07-21 08:58:00,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 162.6086956521739) internal successors, (3740), 23 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:00,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:00,570 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:00,570 INFO L186 Difference]: Start difference. First operand has 312 places, 295 transitions, 1927 flow. Second operand 23 states and 3740 transitions. [2022-07-21 08:58:00,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 551 transitions, 4212 flow [2022-07-21 08:58:00,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 551 transitions, 4122 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:00,736 INFO L242 Difference]: Finished difference. Result has 337 places, 347 transitions, 2748 flow [2022-07-21 08:58:00,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2748, PETRI_PLACES=337, PETRI_TRANSITIONS=347} [2022-07-21 08:58:00,737 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 140 predicate places. [2022-07-21 08:58:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 347 transitions, 2748 flow [2022-07-21 08:58:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:00,738 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:00,738 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:58:00,739 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:00,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1248568524, now seen corresponding path program 2 times [2022-07-21 08:58:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:00,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567159703] [2022-07-21 08:58:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:01,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567159703] [2022-07-21 08:58:01,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567159703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:01,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:01,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:58:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625631296] [2022-07-21 08:58:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:01,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:58:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:58:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:58:01,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-21 08:58:01,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 347 transitions, 2748 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:01,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:01,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-21 08:58:01,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:10,063 INFO L129 PetriNetUnfolder]: 18134/47926 cut-off events. [2022-07-21 08:58:10,063 INFO L130 PetriNetUnfolder]: For 136420/136587 co-relation queries the response was YES. [2022-07-21 08:58:10,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124699 conditions, 47926 events. 18134/47926 cut-off events. For 136420/136587 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 601724 event pairs, 4026 based on Foata normal form. 79/45238 useless extension candidates. Maximal degree in co-relation 124631. Up to 7484 conditions per place. [2022-07-21 08:58:10,979 INFO L132 encePairwiseOnDemand]: 193/222 looper letters, 349 selfloop transitions, 85 changer transitions 0/628 dead transitions. [2022-07-21 08:58:10,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 628 transitions, 5734 flow [2022-07-21 08:58:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 08:58:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-21 08:58:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4076 transitions. [2022-07-21 08:58:10,983 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7344144144144145 [2022-07-21 08:58:10,983 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4076 transitions. [2022-07-21 08:58:10,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4076 transitions. [2022-07-21 08:58:10,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:10,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4076 transitions. [2022-07-21 08:58:10,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 163.04) internal successors, (4076), 25 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 222.0) internal successors, (5772), 26 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,992 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 222.0) internal successors, (5772), 26 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,992 INFO L186 Difference]: Start difference. First operand has 337 places, 347 transitions, 2748 flow. Second operand 25 states and 4076 transitions. [2022-07-21 08:58:10,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 628 transitions, 5734 flow [2022-07-21 08:58:11,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 628 transitions, 5629 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:11,380 INFO L242 Difference]: Finished difference. Result has 368 places, 391 transitions, 3521 flow [2022-07-21 08:58:11,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3521, PETRI_PLACES=368, PETRI_TRANSITIONS=391} [2022-07-21 08:58:11,381 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 171 predicate places. [2022-07-21 08:58:11,381 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 391 transitions, 3521 flow [2022-07-21 08:58:11,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,382 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:11,382 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:58:11,382 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash -60582770, now seen corresponding path program 3 times [2022-07-21 08:58:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:11,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980102069] [2022-07-21 08:58:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:11,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980102069] [2022-07-21 08:58:11,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980102069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:11,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:11,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:58:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059754787] [2022-07-21 08:58:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:11,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:58:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:58:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:58:11,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-21 08:58:11,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 391 transitions, 3521 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:11,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-21 08:58:11,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:22,011 INFO L129 PetriNetUnfolder]: 19685/50127 cut-off events. [2022-07-21 08:58:22,012 INFO L130 PetriNetUnfolder]: For 234935/235172 co-relation queries the response was YES. [2022-07-21 08:58:22,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150952 conditions, 50127 events. 19685/50127 cut-off events. For 234935/235172 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 622660 event pairs, 8485 based on Foata normal form. 102/46760 useless extension candidates. Maximal degree in co-relation 150869. Up to 13045 conditions per place. [2022-07-21 08:58:22,917 INFO L132 encePairwiseOnDemand]: 193/222 looper letters, 314 selfloop transitions, 94 changer transitions 0/602 dead transitions. [2022-07-21 08:58:22,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 602 transitions, 5951 flow [2022-07-21 08:58:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:58:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:58:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3741 transitions. [2022-07-21 08:58:22,921 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7326674500587544 [2022-07-21 08:58:22,921 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3741 transitions. [2022-07-21 08:58:22,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3741 transitions. [2022-07-21 08:58:22,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:22,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3741 transitions. [2022-07-21 08:58:22,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 162.65217391304347) internal successors, (3741), 23 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:22,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:22,956 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:22,956 INFO L186 Difference]: Start difference. First operand has 368 places, 391 transitions, 3521 flow. Second operand 23 states and 3741 transitions. [2022-07-21 08:58:22,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 602 transitions, 5951 flow [2022-07-21 08:58:23,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 602 transitions, 5830 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:23,768 INFO L242 Difference]: Finished difference. Result has 394 places, 419 transitions, 4158 flow [2022-07-21 08:58:23,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4158, PETRI_PLACES=394, PETRI_TRANSITIONS=419} [2022-07-21 08:58:23,768 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 197 predicate places. [2022-07-21 08:58:23,769 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 419 transitions, 4158 flow [2022-07-21 08:58:23,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:23,769 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:23,770 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:23,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:58:23,770 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:23,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1084506938, now seen corresponding path program 4 times [2022-07-21 08:58:23,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:23,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142578649] [2022-07-21 08:58:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:24,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:24,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142578649] [2022-07-21 08:58:24,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142578649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:24,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:24,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:58:24,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648371850] [2022-07-21 08:58:24,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:24,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:58:24,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:58:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:58:24,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-21 08:58:24,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 419 transitions, 4158 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:24,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:24,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-21 08:58:24,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand