./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-sre-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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:05:45,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:05:45,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:05:45,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:05:45,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:05:45,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:05:45,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:05:45,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:05:45,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:05:45,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:05:45,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:05:45,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:05:45,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:05:45,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:05:45,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:05:45,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:05:45,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:05:45,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:05:45,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:05:45,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:05:45,102 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:05:45,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:05:45,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:05:45,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:05:45,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:05:45,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:05:45,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:05:45,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:05:45,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:05:45,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:05:45,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:05:45,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:05:45,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:05:45,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:05:45,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:05:45,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:05:45,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:05:45,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:05:45,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:05:45,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:05:45,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:05:45,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:05:45,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:05:45,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:05:45,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:05:45,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:05:45,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:05:45,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:05:45,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:05:45,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:05:45,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:05:45,142 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:05:45,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:05:45,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:05:45,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:05:45,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:05:45,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:05:45,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:05:45,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:05:45,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:05:45,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:45,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:05:45,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:05:45,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2022-07-13 22:05:45,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:05:45,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:05:45,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:05:45,349 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:05:45,349 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:05:45,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-07-13 22:05:45,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab471102/bc896197d40243c8a2fd94c4bb19b0ed/FLAG7e34c4477 [2022-07-13 22:05:45,758 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:05:45,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-07-13 22:05:45,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab471102/bc896197d40243c8a2fd94c4bb19b0ed/FLAG7e34c4477 [2022-07-13 22:05:45,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab471102/bc896197d40243c8a2fd94c4bb19b0ed [2022-07-13 22:05:45,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:05:45,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:05:45,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:45,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:05:45,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:05:45,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7785d6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45, skipping insertion in model container [2022-07-13 22:05:45,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:05:45,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:05:45,919 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-sre-symm.wvr.c[2133,2146] [2022-07-13 22:05:45,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:45,926 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:05:45,938 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-sre-symm.wvr.c[2133,2146] [2022-07-13 22:05:45,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:45,947 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:05:45,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45 WrapperNode [2022-07-13 22:05:45,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:45,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:45,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:05:45,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:05:45,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,976 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-07-13 22:05:45,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:45,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:05:45,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:05:45,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:05:45,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:45,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:46,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:05:46,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:05:46,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:05:46,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:05:46,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (1/1) ... [2022-07-13 22:05:46,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:46,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:46,031 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) [2022-07-13 22:05:46,033 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 [2022-07-13 22:05:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:05:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:05:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:05:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:05:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:05:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:05:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:05:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:05:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:05:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:05:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:05:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:05:46,066 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:05:46,116 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:05:46,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:05:46,253 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:05:46,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:05:46,263 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:05:46,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:46 BoogieIcfgContainer [2022-07-13 22:05:46,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:05:46,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:05:46,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:05:46,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:05:46,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:05:45" (1/3) ... [2022-07-13 22:05:46,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f5b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:46, skipping insertion in model container [2022-07-13 22:05:46,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:45" (2/3) ... [2022-07-13 22:05:46,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161f5b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:46, skipping insertion in model container [2022-07-13 22:05:46,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:46" (3/3) ... [2022-07-13 22:05:46,280 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-07-13 22:05:46,283 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:05:46,289 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:05:46,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:05:46,289 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:05:46,327 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:05:46,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-07-13 22:05:46,395 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2022-07-13 22:05:46,395 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:05:46,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-07-13 22:05:46,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-07-13 22:05:46,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-07-13 22:05:46,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:05:46,413 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@7eb249ca, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6acde16d [2022-07-13 22:05:46,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:05:46,452 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2022-07-13 22:05:46,452 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:05:46,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:46,453 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] [2022-07-13 22:05:46,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1122200234, now seen corresponding path program 1 times [2022-07-13 22:05:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:46,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597114139] [2022-07-13 22:05:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:46,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597114139] [2022-07-13 22:05:46,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597114139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:46,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:46,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:05:46,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030583849] [2022-07-13 22:05:46,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:46,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:05:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:46,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:05:46,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:05:46,855 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-07-13 22:05:46,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:46,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-07-13 22:05:46,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,080 INFO L129 PetriNetUnfolder]: 55/297 cut-off events. [2022-07-13 22:05:47,081 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-13 22:05:47,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 297 events. 55/297 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1144 event pairs, 11 based on Foata normal form. 9/290 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-07-13 22:05:47,087 INFO L132 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-07-13 22:05:47,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-07-13 22:05:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:05:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:05:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-07-13 22:05:47,106 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-07-13 22:05:47,107 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-07-13 22:05:47,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-07-13 22:05:47,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-07-13 22:05:47,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,121 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,122 INFO L186 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-07-13 22:05:47,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-07-13 22:05:47,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:47,128 INFO L242 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-07-13 22:05:47,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=253, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2022-07-13 22:05:47,131 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-07-13 22:05:47,132 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-07-13 22:05:47,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,132 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,132 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] [2022-07-13 22:05:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:05:47,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -569889743, now seen corresponding path program 1 times [2022-07-13 22:05:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020995081] [2022-07-13 22:05:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020995081] [2022-07-13 22:05:47,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020995081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199783919] [2022-07-13 22:05:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:47,233 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-13 22:05:47,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-13 22:05:47,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,316 INFO L129 PetriNetUnfolder]: 41/342 cut-off events. [2022-07-13 22:05:47,320 INFO L130 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2022-07-13 22:05:47,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 342 events. 41/342 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1582 event pairs, 19 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 562. Up to 46 conditions per place. [2022-07-13 22:05:47,323 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 20 selfloop transitions, 2 changer transitions 3/102 dead transitions. [2022-07-13 22:05:47,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 324 flow [2022-07-13 22:05:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-07-13 22:05:47,325 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-07-13 22:05:47,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-07-13 22:05:47,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-07-13 22:05:47,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-07-13 22:05:47,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,327 INFO L186 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 273 transitions. [2022-07-13 22:05:47,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 324 flow [2022-07-13 22:05:47,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 313 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:47,334 INFO L242 Difference]: Finished difference. Result has 99 places, 93 transitions, 252 flow [2022-07-13 22:05:47,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-07-13 22:05:47,335 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-07-13 22:05:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 252 flow [2022-07-13 22:05:47,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,336 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] [2022-07-13 22:05:47,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:05:47,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1322121675, now seen corresponding path program 2 times [2022-07-13 22:05:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628151358] [2022-07-13 22:05:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628151358] [2022-07-13 22:05:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628151358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404056821] [2022-07-13 22:05:47,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:47,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:47,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:47,415 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-13 22:05:47,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-13 22:05:47,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,449 INFO L129 PetriNetUnfolder]: 26/184 cut-off events. [2022-07-13 22:05:47,449 INFO L130 PetriNetUnfolder]: For 65/66 co-relation queries the response was YES. [2022-07-13 22:05:47,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 184 events. 26/184 cut-off events. For 65/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 539 event pairs, 13 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 287. Up to 39 conditions per place. [2022-07-13 22:05:47,451 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 15 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2022-07-13 22:05:47,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 288 flow [2022-07-13 22:05:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-07-13 22:05:47,452 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2022-07-13 22:05:47,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-07-13 22:05:47,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-07-13 22:05:47,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-07-13 22:05:47,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,455 INFO L186 Difference]: Start difference. First operand has 99 places, 93 transitions, 252 flow. Second operand 3 states and 268 transitions. [2022-07-13 22:05:47,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 288 flow [2022-07-13 22:05:47,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 278 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:47,461 INFO L242 Difference]: Finished difference. Result has 99 places, 83 transitions, 204 flow [2022-07-13 22:05:47,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-07-13 22:05:47,463 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-07-13 22:05:47,463 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 204 flow [2022-07-13 22:05:47,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,463 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] [2022-07-13 22:05:47,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:05:47,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1194239646, now seen corresponding path program 1 times [2022-07-13 22:05:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219985973] [2022-07-13 22:05:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219985973] [2022-07-13 22:05:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219985973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747702744] [2022-07-13 22:05:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:47,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:47,651 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:47,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:47,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,964 INFO L129 PetriNetUnfolder]: 96/368 cut-off events. [2022-07-13 22:05:47,964 INFO L130 PetriNetUnfolder]: For 155/157 co-relation queries the response was YES. [2022-07-13 22:05:47,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 368 events. 96/368 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1618 event pairs, 35 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 693. Up to 112 conditions per place. [2022-07-13 22:05:47,966 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/167 dead transitions. [2022-07-13 22:05:47,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 697 flow [2022-07-13 22:05:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-07-13 22:05:47,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-07-13 22:05:47,970 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-07-13 22:05:47,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-07-13 22:05:47,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-07-13 22:05:47,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.79166666666667) internal successors, (1627), 24 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,980 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,980 INFO L186 Difference]: Start difference. First operand has 99 places, 83 transitions, 204 flow. Second operand 24 states and 1627 transitions. [2022-07-13 22:05:47,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 697 flow [2022-07-13 22:05:47,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 643 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-07-13 22:05:47,984 INFO L242 Difference]: Finished difference. Result has 132 places, 87 transitions, 283 flow [2022-07-13 22:05:47,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=87} [2022-07-13 22:05:47,985 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2022-07-13 22:05:47,986 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 87 transitions, 283 flow [2022-07-13 22:05:47,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,987 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,987 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] [2022-07-13 22:05:47,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:05:47,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1572308048, now seen corresponding path program 2 times [2022-07-13 22:05:47,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984628032] [2022-07-13 22:05:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:48,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:48,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984628032] [2022-07-13 22:05:48,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984628032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:48,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:48,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:48,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684570043] [2022-07-13 22:05:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:48,129 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:48,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 87 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:48,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,331 INFO L129 PetriNetUnfolder]: 94/370 cut-off events. [2022-07-13 22:05:48,332 INFO L130 PetriNetUnfolder]: For 885/886 co-relation queries the response was YES. [2022-07-13 22:05:48,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 370 events. 94/370 cut-off events. For 885/886 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1614 event pairs, 44 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1108. Up to 149 conditions per place. [2022-07-13 22:05:48,334 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 14 changer transitions 18/130 dead transitions. [2022-07-13 22:05:48,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 757 flow [2022-07-13 22:05:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1086 transitions. [2022-07-13 22:05:48,337 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6654411764705882 [2022-07-13 22:05:48,337 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1086 transitions. [2022-07-13 22:05:48,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1086 transitions. [2022-07-13 22:05:48,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:48,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1086 transitions. [2022-07-13 22:05:48,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.875) internal successors, (1086), 16 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,342 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,342 INFO L186 Difference]: Start difference. First operand has 132 places, 87 transitions, 283 flow. Second operand 16 states and 1086 transitions. [2022-07-13 22:05:48,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 757 flow [2022-07-13 22:05:48,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 682 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:48,347 INFO L242 Difference]: Finished difference. Result has 130 places, 97 transitions, 405 flow [2022-07-13 22:05:48,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=405, PETRI_PLACES=130, PETRI_TRANSITIONS=97} [2022-07-13 22:05:48,348 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 39 predicate places. [2022-07-13 22:05:48,348 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 97 transitions, 405 flow [2022-07-13 22:05:48,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,349 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:48,349 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] [2022-07-13 22:05:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:05:48,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 74872556, now seen corresponding path program 3 times [2022-07-13 22:05:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542005976] [2022-07-13 22:05:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:48,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:48,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542005976] [2022-07-13 22:05:48,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542005976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:48,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:48,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:48,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626777587] [2022-07-13 22:05:48,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:48,470 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:48,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 97 transitions, 405 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:48,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,729 INFO L129 PetriNetUnfolder]: 118/436 cut-off events. [2022-07-13 22:05:48,729 INFO L130 PetriNetUnfolder]: For 1405/1409 co-relation queries the response was YES. [2022-07-13 22:05:48,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 436 events. 118/436 cut-off events. For 1405/1409 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2051 event pairs, 55 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1521. Up to 155 conditions per place. [2022-07-13 22:05:48,732 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 60 selfloop transitions, 15 changer transitions 28/156 dead transitions. [2022-07-13 22:05:48,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 156 transitions, 1112 flow [2022-07-13 22:05:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1418 transitions. [2022-07-13 22:05:48,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6619981325863679 [2022-07-13 22:05:48,736 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1418 transitions. [2022-07-13 22:05:48,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1418 transitions. [2022-07-13 22:05:48,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:48,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1418 transitions. [2022-07-13 22:05:48,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.52380952380952) internal successors, (1418), 21 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,743 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,743 INFO L186 Difference]: Start difference. First operand has 130 places, 97 transitions, 405 flow. Second operand 21 states and 1418 transitions. [2022-07-13 22:05:48,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 156 transitions, 1112 flow [2022-07-13 22:05:48,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 156 transitions, 1001 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-07-13 22:05:48,751 INFO L242 Difference]: Finished difference. Result has 152 places, 109 transitions, 552 flow [2022-07-13 22:05:48,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=152, PETRI_TRANSITIONS=109} [2022-07-13 22:05:48,753 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2022-07-13 22:05:48,753 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 109 transitions, 552 flow [2022-07-13 22:05:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,753 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:48,753 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] [2022-07-13 22:05:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:05:48,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash 397407754, now seen corresponding path program 4 times [2022-07-13 22:05:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:48,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152718474] [2022-07-13 22:05:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152718474] [2022-07-13 22:05:48,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152718474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:48,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:48,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:48,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171624067] [2022-07-13 22:05:48,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:48,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:48,885 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:48,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 109 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:48,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,102 INFO L129 PetriNetUnfolder]: 113/436 cut-off events. [2022-07-13 22:05:49,102 INFO L130 PetriNetUnfolder]: For 2600/2606 co-relation queries the response was YES. [2022-07-13 22:05:49,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 436 events. 113/436 cut-off events. For 2600/2606 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2145 event pairs, 60 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1786. Up to 168 conditions per place. [2022-07-13 22:05:49,106 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 23 changer transitions 28/160 dead transitions. [2022-07-13 22:05:49,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 160 transitions, 1387 flow [2022-07-13 22:05:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1348 transitions. [2022-07-13 22:05:49,109 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2022-07-13 22:05:49,109 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1348 transitions. [2022-07-13 22:05:49,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1348 transitions. [2022-07-13 22:05:49,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1348 transitions. [2022-07-13 22:05:49,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.4) internal successors, (1348), 20 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,115 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,115 INFO L186 Difference]: Start difference. First operand has 152 places, 109 transitions, 552 flow. Second operand 20 states and 1348 transitions. [2022-07-13 22:05:49,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 160 transitions, 1387 flow [2022-07-13 22:05:49,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 1227 flow, removed 80 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:49,124 INFO L242 Difference]: Finished difference. Result has 164 places, 118 transitions, 696 flow [2022-07-13 22:05:49,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=696, PETRI_PLACES=164, PETRI_TRANSITIONS=118} [2022-07-13 22:05:49,125 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-07-13 22:05:49,125 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 118 transitions, 696 flow [2022-07-13 22:05:49,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,126 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] [2022-07-13 22:05:49,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:05:49,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1790540224, now seen corresponding path program 1 times [2022-07-13 22:05:49,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455556318] [2022-07-13 22:05:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455556318] [2022-07-13 22:05:49,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455556318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2239945] [2022-07-13 22:05:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:49,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:49,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-13 22:05:49,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 118 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-13 22:05:49,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,228 INFO L129 PetriNetUnfolder]: 69/417 cut-off events. [2022-07-13 22:05:49,229 INFO L130 PetriNetUnfolder]: For 2279/2291 co-relation queries the response was YES. [2022-07-13 22:05:49,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 417 events. 69/417 cut-off events. For 2279/2291 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2099 event pairs, 34 based on Foata normal form. 8/401 useless extension candidates. Maximal degree in co-relation 1501. Up to 52 conditions per place. [2022-07-13 22:05:49,233 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 20 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2022-07-13 22:05:49,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 130 transitions, 786 flow [2022-07-13 22:05:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:05:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:05:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-07-13 22:05:49,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-07-13 22:05:49,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-07-13 22:05:49,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-07-13 22:05:49,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-07-13 22:05:49,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,238 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,238 INFO L186 Difference]: Start difference. First operand has 164 places, 118 transitions, 696 flow. Second operand 5 states and 440 transitions. [2022-07-13 22:05:49,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 130 transitions, 786 flow [2022-07-13 22:05:49,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 728 flow, removed 22 selfloop flow, removed 12 redundant places. [2022-07-13 22:05:49,270 INFO L242 Difference]: Finished difference. Result has 147 places, 122 transitions, 686 flow [2022-07-13 22:05:49,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2022-07-13 22:05:49,271 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-07-13 22:05:49,271 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 686 flow [2022-07-13 22:05:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,272 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,272 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] [2022-07-13 22:05:49,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:05:49,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2048059198, now seen corresponding path program 2 times [2022-07-13 22:05:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447906307] [2022-07-13 22:05:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447906307] [2022-07-13 22:05:49,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447906307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:05:49,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391140906] [2022-07-13 22:05:49,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:05:49,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:05:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:05:49,314 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-13 22:05:49,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-13 22:05:49,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,365 INFO L129 PetriNetUnfolder]: 61/391 cut-off events. [2022-07-13 22:05:49,365 INFO L130 PetriNetUnfolder]: For 1285/1297 co-relation queries the response was YES. [2022-07-13 22:05:49,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 391 events. 61/391 cut-off events. For 1285/1297 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1915 event pairs, 31 based on Foata normal form. 7/385 useless extension candidates. Maximal degree in co-relation 1082. Up to 47 conditions per place. [2022-07-13 22:05:49,368 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 22 selfloop transitions, 7 changer transitions 0/131 dead transitions. [2022-07-13 22:05:49,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 131 transitions, 780 flow [2022-07-13 22:05:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:05:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 22:05:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-07-13 22:05:49,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-07-13 22:05:49,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-07-13 22:05:49,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-07-13 22:05:49,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-07-13 22:05:49,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,372 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,372 INFO L186 Difference]: Start difference. First operand has 147 places, 122 transitions, 686 flow. Second operand 4 states and 354 transitions. [2022-07-13 22:05:49,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 131 transitions, 780 flow [2022-07-13 22:05:49,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 131 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:49,379 INFO L242 Difference]: Finished difference. Result has 151 places, 124 transitions, 722 flow [2022-07-13 22:05:49,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=722, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2022-07-13 22:05:49,380 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-07-13 22:05:49,381 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 722 flow [2022-07-13 22:05:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,381 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] [2022-07-13 22:05:49,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:05:49,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash 973234580, now seen corresponding path program 5 times [2022-07-13 22:05:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021630987] [2022-07-13 22:05:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021630987] [2022-07-13 22:05:49,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021630987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651571648] [2022-07-13 22:05:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:49,483 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:49,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:49,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,732 INFO L129 PetriNetUnfolder]: 134/552 cut-off events. [2022-07-13 22:05:49,733 INFO L130 PetriNetUnfolder]: For 2245/2261 co-relation queries the response was YES. [2022-07-13 22:05:49,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 552 events. 134/552 cut-off events. For 2245/2261 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3033 event pairs, 57 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 2055. Up to 193 conditions per place. [2022-07-13 22:05:49,737 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 20 changer transitions 28/185 dead transitions. [2022-07-13 22:05:49,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 185 transitions, 1533 flow [2022-07-13 22:05:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1352 transitions. [2022-07-13 22:05:49,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6627450980392157 [2022-07-13 22:05:49,739 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1352 transitions. [2022-07-13 22:05:49,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1352 transitions. [2022-07-13 22:05:49,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1352 transitions. [2022-07-13 22:05:49,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.6) internal successors, (1352), 20 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,744 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,744 INFO L186 Difference]: Start difference. First operand has 151 places, 124 transitions, 722 flow. Second operand 20 states and 1352 transitions. [2022-07-13 22:05:49,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 185 transitions, 1533 flow [2022-07-13 22:05:49,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 185 transitions, 1521 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:49,755 INFO L242 Difference]: Finished difference. Result has 185 places, 134 transitions, 917 flow [2022-07-13 22:05:49,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=917, PETRI_PLACES=185, PETRI_TRANSITIONS=134} [2022-07-13 22:05:49,756 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-07-13 22:05:49,756 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 134 transitions, 917 flow [2022-07-13 22:05:49,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,757 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,757 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] [2022-07-13 22:05:49,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:05:49,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1649984722, now seen corresponding path program 6 times [2022-07-13 22:05:49,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237585321] [2022-07-13 22:05:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237585321] [2022-07-13 22:05:49,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237585321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820659522] [2022-07-13 22:05:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:49,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:49,842 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:49,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 134 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:49,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,105 INFO L129 PetriNetUnfolder]: 131/559 cut-off events. [2022-07-13 22:05:50,105 INFO L130 PetriNetUnfolder]: For 4526/4545 co-relation queries the response was YES. [2022-07-13 22:05:50,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 559 events. 131/559 cut-off events. For 4526/4545 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3189 event pairs, 40 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 2569. Up to 125 conditions per place. [2022-07-13 22:05:50,111 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 115 selfloop transitions, 24 changer transitions 40/238 dead transitions. [2022-07-13 22:05:50,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 238 transitions, 2380 flow [2022-07-13 22:05:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1624 transitions. [2022-07-13 22:05:50,113 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-07-13 22:05:50,113 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1624 transitions. [2022-07-13 22:05:50,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1624 transitions. [2022-07-13 22:05:50,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1624 transitions. [2022-07-13 22:05:50,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.66666666666667) internal successors, (1624), 24 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,119 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,119 INFO L186 Difference]: Start difference. First operand has 185 places, 134 transitions, 917 flow. Second operand 24 states and 1624 transitions. [2022-07-13 22:05:50,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 238 transitions, 2380 flow [2022-07-13 22:05:50,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 238 transitions, 2170 flow, removed 105 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:50,136 INFO L242 Difference]: Finished difference. Result has 208 places, 137 transitions, 1042 flow [2022-07-13 22:05:50,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1042, PETRI_PLACES=208, PETRI_TRANSITIONS=137} [2022-07-13 22:05:50,136 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-07-13 22:05:50,137 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 137 transitions, 1042 flow [2022-07-13 22:05:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,137 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] [2022-07-13 22:05:50,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:05:50,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash 624016976, now seen corresponding path program 7 times [2022-07-13 22:05:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223955996] [2022-07-13 22:05:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:50,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223955996] [2022-07-13 22:05:50,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223955996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092864970] [2022-07-13 22:05:50,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:50,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:50,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:50,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 137 transitions, 1042 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:50,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,508 INFO L129 PetriNetUnfolder]: 127/562 cut-off events. [2022-07-13 22:05:50,508 INFO L130 PetriNetUnfolder]: For 4693/4705 co-relation queries the response was YES. [2022-07-13 22:05:50,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 562 events. 127/562 cut-off events. For 4693/4705 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3230 event pairs, 74 based on Foata normal form. 3/556 useless extension candidates. Maximal degree in co-relation 2639. Up to 245 conditions per place. [2022-07-13 22:05:50,516 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 68 selfloop transitions, 26 changer transitions 34/187 dead transitions. [2022-07-13 22:05:50,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 187 transitions, 1910 flow [2022-07-13 22:05:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1478 transitions. [2022-07-13 22:05:50,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6586452762923352 [2022-07-13 22:05:50,518 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1478 transitions. [2022-07-13 22:05:50,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1478 transitions. [2022-07-13 22:05:50,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1478 transitions. [2022-07-13 22:05:50,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.18181818181819) internal successors, (1478), 22 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,524 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,524 INFO L186 Difference]: Start difference. First operand has 208 places, 137 transitions, 1042 flow. Second operand 22 states and 1478 transitions. [2022-07-13 22:05:50,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 187 transitions, 1910 flow [2022-07-13 22:05:50,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 187 transitions, 1840 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:50,544 INFO L242 Difference]: Finished difference. Result has 208 places, 137 transitions, 1097 flow [2022-07-13 22:05:50,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1097, PETRI_PLACES=208, PETRI_TRANSITIONS=137} [2022-07-13 22:05:50,545 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-07-13 22:05:50,545 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 137 transitions, 1097 flow [2022-07-13 22:05:50,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,546 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] [2022-07-13 22:05:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:05:50,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1308203306, now seen corresponding path program 8 times [2022-07-13 22:05:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351220471] [2022-07-13 22:05:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:50,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351220471] [2022-07-13 22:05:50,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351220471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596960831] [2022-07-13 22:05:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:50,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:50,626 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:50,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 137 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:50,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,826 INFO L129 PetriNetUnfolder]: 114/512 cut-off events. [2022-07-13 22:05:50,827 INFO L130 PetriNetUnfolder]: For 4368/4387 co-relation queries the response was YES. [2022-07-13 22:05:50,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 512 events. 114/512 cut-off events. For 4368/4387 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2793 event pairs, 74 based on Foata normal form. 7/510 useless extension candidates. Maximal degree in co-relation 2395. Up to 243 conditions per place. [2022-07-13 22:05:50,832 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 14 changer transitions 31/163 dead transitions. [2022-07-13 22:05:50,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 163 transitions, 1631 flow [2022-07-13 22:05:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-07-13 22:05:50,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-07-13 22:05:50,834 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-07-13 22:05:50,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-07-13 22:05:50,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-07-13 22:05:50,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,838 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,839 INFO L186 Difference]: Start difference. First operand has 208 places, 137 transitions, 1097 flow. Second operand 18 states and 1209 transitions. [2022-07-13 22:05:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 163 transitions, 1631 flow [2022-07-13 22:05:50,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 163 transitions, 1506 flow, removed 45 selfloop flow, removed 17 redundant places. [2022-07-13 22:05:50,855 INFO L242 Difference]: Finished difference. Result has 201 places, 122 transitions, 848 flow [2022-07-13 22:05:50,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=201, PETRI_TRANSITIONS=122} [2022-07-13 22:05:50,856 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 110 predicate places. [2022-07-13 22:05:50,856 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 122 transitions, 848 flow [2022-07-13 22:05:50,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,857 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,857 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] [2022-07-13 22:05:50,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:05:50,857 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1813419210, now seen corresponding path program 9 times [2022-07-13 22:05:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512662293] [2022-07-13 22:05:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:50,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512662293] [2022-07-13 22:05:50,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512662293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540099060] [2022-07-13 22:05:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:50,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:50,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:50,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 122 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:50,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:51,179 INFO L129 PetriNetUnfolder]: 116/511 cut-off events. [2022-07-13 22:05:51,180 INFO L130 PetriNetUnfolder]: For 3976/3991 co-relation queries the response was YES. [2022-07-13 22:05:51,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 511 events. 116/511 cut-off events. For 3976/3991 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2752 event pairs, 80 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 2444. Up to 243 conditions per place. [2022-07-13 22:05:51,184 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 22 changer transitions 21/158 dead transitions. [2022-07-13 22:05:51,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 158 transitions, 1551 flow [2022-07-13 22:05:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1215 transitions. [2022-07-13 22:05:51,186 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-07-13 22:05:51,186 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1215 transitions. [2022-07-13 22:05:51,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1215 transitions. [2022-07-13 22:05:51,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1215 transitions. [2022-07-13 22:05:51,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.5) internal successors, (1215), 18 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,191 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,191 INFO L186 Difference]: Start difference. First operand has 201 places, 122 transitions, 848 flow. Second operand 18 states and 1215 transitions. [2022-07-13 22:05:51,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 158 transitions, 1551 flow [2022-07-13 22:05:51,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 158 transitions, 1378 flow, removed 40 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:51,205 INFO L242 Difference]: Finished difference. Result has 186 places, 131 transitions, 971 flow [2022-07-13 22:05:51,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=971, PETRI_PLACES=186, PETRI_TRANSITIONS=131} [2022-07-13 22:05:51,205 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2022-07-13 22:05:51,206 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 131 transitions, 971 flow [2022-07-13 22:05:51,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,206 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,207 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] [2022-07-13 22:05:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:05:51,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1811456982, now seen corresponding path program 10 times [2022-07-13 22:05:51,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708712234] [2022-07-13 22:05:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708712234] [2022-07-13 22:05:51,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708712234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510136366] [2022-07-13 22:05:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:51,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 131 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:51,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:51,505 INFO L129 PetriNetUnfolder]: 113/513 cut-off events. [2022-07-13 22:05:51,506 INFO L130 PetriNetUnfolder]: For 3249/3262 co-relation queries the response was YES. [2022-07-13 22:05:51,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 513 events. 113/513 cut-off events. For 3249/3262 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2784 event pairs, 78 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 2309. Up to 243 conditions per place. [2022-07-13 22:05:51,510 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 24 changer transitions 22/162 dead transitions. [2022-07-13 22:05:51,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 162 transitions, 1583 flow [2022-07-13 22:05:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1151 transitions. [2022-07-13 22:05:51,511 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6637831603229527 [2022-07-13 22:05:51,512 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1151 transitions. [2022-07-13 22:05:51,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1151 transitions. [2022-07-13 22:05:51,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1151 transitions. [2022-07-13 22:05:51,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.70588235294117) internal successors, (1151), 17 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,515 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,516 INFO L186 Difference]: Start difference. First operand has 186 places, 131 transitions, 971 flow. Second operand 17 states and 1151 transitions. [2022-07-13 22:05:51,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 162 transitions, 1583 flow [2022-07-13 22:05:51,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 162 transitions, 1512 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-07-13 22:05:51,528 INFO L242 Difference]: Finished difference. Result has 198 places, 135 transitions, 1074 flow [2022-07-13 22:05:51,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1074, PETRI_PLACES=198, PETRI_TRANSITIONS=135} [2022-07-13 22:05:51,529 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-07-13 22:05:51,529 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 135 transitions, 1074 flow [2022-07-13 22:05:51,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,530 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] [2022-07-13 22:05:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:05:51,530 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash -66650394, now seen corresponding path program 11 times [2022-07-13 22:05:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211937454] [2022-07-13 22:05:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211937454] [2022-07-13 22:05:51,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211937454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535256969] [2022-07-13 22:05:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:51,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 135 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:51,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:51,836 INFO L129 PetriNetUnfolder]: 110/508 cut-off events. [2022-07-13 22:05:51,837 INFO L130 PetriNetUnfolder]: For 3304/3317 co-relation queries the response was YES. [2022-07-13 22:05:51,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 508 events. 110/508 cut-off events. For 3304/3317 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2758 event pairs, 78 based on Foata normal form. 3/500 useless extension candidates. Maximal degree in co-relation 2284. Up to 243 conditions per place. [2022-07-13 22:05:51,842 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 14 changer transitions 30/160 dead transitions. [2022-07-13 22:05:51,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 160 transitions, 1566 flow [2022-07-13 22:05:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1150 transitions. [2022-07-13 22:05:51,844 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6632064590542099 [2022-07-13 22:05:51,844 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1150 transitions. [2022-07-13 22:05:51,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1150 transitions. [2022-07-13 22:05:51,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1150 transitions. [2022-07-13 22:05:51,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,849 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,849 INFO L186 Difference]: Start difference. First operand has 198 places, 135 transitions, 1074 flow. Second operand 17 states and 1150 transitions. [2022-07-13 22:05:51,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 160 transitions, 1566 flow [2022-07-13 22:05:51,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 160 transitions, 1471 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:51,864 INFO L242 Difference]: Finished difference. Result has 205 places, 126 transitions, 900 flow [2022-07-13 22:05:51,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=900, PETRI_PLACES=205, PETRI_TRANSITIONS=126} [2022-07-13 22:05:51,865 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 114 predicate places. [2022-07-13 22:05:51,865 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 126 transitions, 900 flow [2022-07-13 22:05:51,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,865 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,865 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] [2022-07-13 22:05:51,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:05:51,866 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1478253392, now seen corresponding path program 12 times [2022-07-13 22:05:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327869634] [2022-07-13 22:05:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327869634] [2022-07-13 22:05:51,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327869634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147020840] [2022-07-13 22:05:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,941 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:51,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 126 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:51,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,148 INFO L129 PetriNetUnfolder]: 100/468 cut-off events. [2022-07-13 22:05:52,148 INFO L130 PetriNetUnfolder]: For 3049/3063 co-relation queries the response was YES. [2022-07-13 22:05:52,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 468 events. 100/468 cut-off events. For 3049/3063 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2403 event pairs, 74 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2023. Up to 230 conditions per place. [2022-07-13 22:05:52,153 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 3 changer transitions 33/142 dead transitions. [2022-07-13 22:05:52,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 142 transitions, 1230 flow [2022-07-13 22:05:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-07-13 22:05:52,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-07-13 22:05:52,155 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-07-13 22:05:52,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-07-13 22:05:52,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-07-13 22:05:52,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,159 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,159 INFO L186 Difference]: Start difference. First operand has 205 places, 126 transitions, 900 flow. Second operand 18 states and 1205 transitions. [2022-07-13 22:05:52,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 142 transitions, 1230 flow [2022-07-13 22:05:52,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 142 transitions, 1112 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-07-13 22:05:52,171 INFO L242 Difference]: Finished difference. Result has 189 places, 106 transitions, 575 flow [2022-07-13 22:05:52,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=575, PETRI_PLACES=189, PETRI_TRANSITIONS=106} [2022-07-13 22:05:52,172 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 98 predicate places. [2022-07-13 22:05:52,172 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 106 transitions, 575 flow [2022-07-13 22:05:52,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,172 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,172 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] [2022-07-13 22:05:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:05:52,173 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1540170770, now seen corresponding path program 13 times [2022-07-13 22:05:52,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130428459] [2022-07-13 22:05:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:52,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130428459] [2022-07-13 22:05:52,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130428459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:52,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908090429] [2022-07-13 22:05:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:52,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:52,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:52,249 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:52,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 106 transitions, 575 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:52,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,522 INFO L129 PetriNetUnfolder]: 105/471 cut-off events. [2022-07-13 22:05:52,522 INFO L130 PetriNetUnfolder]: For 2883/2889 co-relation queries the response was YES. [2022-07-13 22:05:52,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 471 events. 105/471 cut-off events. For 2883/2889 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2406 event pairs, 46 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 2040. Up to 162 conditions per place. [2022-07-13 22:05:52,526 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 19 changer transitions 28/169 dead transitions. [2022-07-13 22:05:52,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1480 flow [2022-07-13 22:05:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1477 transitions. [2022-07-13 22:05:52,528 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6581996434937611 [2022-07-13 22:05:52,528 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1477 transitions. [2022-07-13 22:05:52,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1477 transitions. [2022-07-13 22:05:52,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1477 transitions. [2022-07-13 22:05:52,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.13636363636364) internal successors, (1477), 22 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,536 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,536 INFO L186 Difference]: Start difference. First operand has 189 places, 106 transitions, 575 flow. Second operand 22 states and 1477 transitions. [2022-07-13 22:05:52,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1480 flow [2022-07-13 22:05:52,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 169 transitions, 1295 flow, removed 40 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:52,545 INFO L242 Difference]: Finished difference. Result has 175 places, 117 transitions, 709 flow [2022-07-13 22:05:52,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=709, PETRI_PLACES=175, PETRI_TRANSITIONS=117} [2022-07-13 22:05:52,546 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-07-13 22:05:52,546 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 117 transitions, 709 flow [2022-07-13 22:05:52,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,546 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] [2022-07-13 22:05:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:05:52,546 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:52,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash 498665044, now seen corresponding path program 14 times [2022-07-13 22:05:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135601516] [2022-07-13 22:05:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135601516] [2022-07-13 22:05:52,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135601516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450378905] [2022-07-13 22:05:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:52,648 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:52,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 117 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:52,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,899 INFO L129 PetriNetUnfolder]: 102/455 cut-off events. [2022-07-13 22:05:52,899 INFO L130 PetriNetUnfolder]: For 2221/2227 co-relation queries the response was YES. [2022-07-13 22:05:52,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 455 events. 102/455 cut-off events. For 2221/2227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2282 event pairs, 47 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 1970. Up to 160 conditions per place. [2022-07-13 22:05:52,903 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 54 selfloop transitions, 21 changer transitions 28/162 dead transitions. [2022-07-13 22:05:52,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 162 transitions, 1445 flow [2022-07-13 22:05:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1414 transitions. [2022-07-13 22:05:52,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-07-13 22:05:52,905 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1414 transitions. [2022-07-13 22:05:52,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1414 transitions. [2022-07-13 22:05:52,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1414 transitions. [2022-07-13 22:05:52,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.33333333333333) internal successors, (1414), 21 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,910 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,910 INFO L186 Difference]: Start difference. First operand has 175 places, 117 transitions, 709 flow. Second operand 21 states and 1414 transitions. [2022-07-13 22:05:52,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 162 transitions, 1445 flow [2022-07-13 22:05:52,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1347 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:52,920 INFO L242 Difference]: Finished difference. Result has 184 places, 119 transitions, 808 flow [2022-07-13 22:05:52,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=808, PETRI_PLACES=184, PETRI_TRANSITIONS=119} [2022-07-13 22:05:52,920 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2022-07-13 22:05:52,920 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 119 transitions, 808 flow [2022-07-13 22:05:52,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,921 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,921 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] [2022-07-13 22:05:52,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:05:52,922 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2009897988, now seen corresponding path program 15 times [2022-07-13 22:05:52,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739325097] [2022-07-13 22:05:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739325097] [2022-07-13 22:05:52,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739325097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:52,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543934579] [2022-07-13 22:05:52,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:52,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:52,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:52,994 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:52,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 119 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:52,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,196 INFO L129 PetriNetUnfolder]: 99/458 cut-off events. [2022-07-13 22:05:53,197 INFO L130 PetriNetUnfolder]: For 2894/2900 co-relation queries the response was YES. [2022-07-13 22:05:53,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 458 events. 99/458 cut-off events. For 2894/2900 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2293 event pairs, 44 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2069. Up to 165 conditions per place. [2022-07-13 22:05:53,201 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 22 changer transitions 25/165 dead transitions. [2022-07-13 22:05:53,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 165 transitions, 1527 flow [2022-07-13 22:05:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1088 transitions. [2022-07-13 22:05:53,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-07-13 22:05:53,203 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1088 transitions. [2022-07-13 22:05:53,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1088 transitions. [2022-07-13 22:05:53,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1088 transitions. [2022-07-13 22:05:53,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,207 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,207 INFO L186 Difference]: Start difference. First operand has 184 places, 119 transitions, 808 flow. Second operand 16 states and 1088 transitions. [2022-07-13 22:05:53,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 165 transitions, 1527 flow [2022-07-13 22:05:53,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 1382 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-13 22:05:53,240 INFO L242 Difference]: Finished difference. Result has 179 places, 124 transitions, 870 flow [2022-07-13 22:05:53,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=870, PETRI_PLACES=179, PETRI_TRANSITIONS=124} [2022-07-13 22:05:53,241 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-07-13 22:05:53,241 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 124 transitions, 870 flow [2022-07-13 22:05:53,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,241 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] [2022-07-13 22:05:53,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:05:53,242 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1611609298, now seen corresponding path program 16 times [2022-07-13 22:05:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411342677] [2022-07-13 22:05:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411342677] [2022-07-13 22:05:53,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411342677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947052800] [2022-07-13 22:05:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:53,316 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:53,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 124 transitions, 870 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:53,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,506 INFO L129 PetriNetUnfolder]: 90/424 cut-off events. [2022-07-13 22:05:53,506 INFO L130 PetriNetUnfolder]: For 2145/2151 co-relation queries the response was YES. [2022-07-13 22:05:53,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 424 events. 90/424 cut-off events. For 2145/2151 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2078 event pairs, 44 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1834. Up to 159 conditions per place. [2022-07-13 22:05:53,510 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 10 changer transitions 30/154 dead transitions. [2022-07-13 22:05:53,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 154 transitions, 1324 flow [2022-07-13 22:05:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-07-13 22:05:53,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-07-13 22:05:53,512 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-07-13 22:05:53,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-07-13 22:05:53,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-07-13 22:05:53,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,516 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,516 INFO L186 Difference]: Start difference. First operand has 179 places, 124 transitions, 870 flow. Second operand 18 states and 1210 transitions. [2022-07-13 22:05:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 154 transitions, 1324 flow [2022-07-13 22:05:53,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1220 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:53,526 INFO L242 Difference]: Finished difference. Result has 187 places, 109 transitions, 629 flow [2022-07-13 22:05:53,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=629, PETRI_PLACES=187, PETRI_TRANSITIONS=109} [2022-07-13 22:05:53,526 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2022-07-13 22:05:53,527 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 109 transitions, 629 flow [2022-07-13 22:05:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,527 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,527 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] [2022-07-13 22:05:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:05:53,527 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1377986538, now seen corresponding path program 17 times [2022-07-13 22:05:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815779331] [2022-07-13 22:05:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815779331] [2022-07-13 22:05:53,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815779331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228041672] [2022-07-13 22:05:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:53,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:53,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:53,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 109 transitions, 629 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:53,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,863 INFO L129 PetriNetUnfolder]: 95/429 cut-off events. [2022-07-13 22:05:53,864 INFO L130 PetriNetUnfolder]: For 2214/2220 co-relation queries the response was YES. [2022-07-13 22:05:53,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 429 events. 95/429 cut-off events. For 2214/2220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2078 event pairs, 45 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1871. Up to 159 conditions per place. [2022-07-13 22:05:53,868 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 20 changer transitions 23/150 dead transitions. [2022-07-13 22:05:53,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 150 transitions, 1283 flow [2022-07-13 22:05:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1218 transitions. [2022-07-13 22:05:53,870 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-07-13 22:05:53,870 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1218 transitions. [2022-07-13 22:05:53,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1218 transitions. [2022-07-13 22:05:53,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1218 transitions. [2022-07-13 22:05:53,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,873 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,873 INFO L186 Difference]: Start difference. First operand has 187 places, 109 transitions, 629 flow. Second operand 18 states and 1218 transitions. [2022-07-13 22:05:53,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 150 transitions, 1283 flow [2022-07-13 22:05:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 150 transitions, 1156 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-13 22:05:53,882 INFO L242 Difference]: Finished difference. Result has 173 places, 118 transitions, 780 flow [2022-07-13 22:05:53,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=173, PETRI_TRANSITIONS=118} [2022-07-13 22:05:53,882 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 82 predicate places. [2022-07-13 22:05:53,882 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 118 transitions, 780 flow [2022-07-13 22:05:53,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,883 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,883 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] [2022-07-13 22:05:53,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:05:53,883 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -56417466, now seen corresponding path program 18 times [2022-07-13 22:05:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480158126] [2022-07-13 22:05:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480158126] [2022-07-13 22:05:53,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480158126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60883878] [2022-07-13 22:05:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:53,960 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:53,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 118 transitions, 780 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:53,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,169 INFO L129 PetriNetUnfolder]: 91/433 cut-off events. [2022-07-13 22:05:54,169 INFO L130 PetriNetUnfolder]: For 2017/2023 co-relation queries the response was YES. [2022-07-13 22:05:54,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 433 events. 91/433 cut-off events. For 2017/2023 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2112 event pairs, 41 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1817. Up to 159 conditions per place. [2022-07-13 22:05:54,173 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 22 changer transitions 24/154 dead transitions. [2022-07-13 22:05:54,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 154 transitions, 1365 flow [2022-07-13 22:05:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1154 transitions. [2022-07-13 22:05:54,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6655132641291811 [2022-07-13 22:05:54,174 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1154 transitions. [2022-07-13 22:05:54,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1154 transitions. [2022-07-13 22:05:54,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1154 transitions. [2022-07-13 22:05:54,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.88235294117646) internal successors, (1154), 17 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,178 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,178 INFO L186 Difference]: Start difference. First operand has 173 places, 118 transitions, 780 flow. Second operand 17 states and 1154 transitions. [2022-07-13 22:05:54,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 154 transitions, 1365 flow [2022-07-13 22:05:54,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 154 transitions, 1282 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-13 22:05:54,188 INFO L242 Difference]: Finished difference. Result has 185 places, 122 transitions, 877 flow [2022-07-13 22:05:54,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=877, PETRI_PLACES=185, PETRI_TRANSITIONS=122} [2022-07-13 22:05:54,188 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-07-13 22:05:54,188 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 122 transitions, 877 flow [2022-07-13 22:05:54,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,189 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:54,189 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] [2022-07-13 22:05:54,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:05:54,189 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:54,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:54,189 INFO L85 PathProgramCache]: Analyzing trace with hash 679177784, now seen corresponding path program 19 times [2022-07-13 22:05:54,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:54,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25979885] [2022-07-13 22:05:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:54,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25979885] [2022-07-13 22:05:54,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25979885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147416667] [2022-07-13 22:05:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:54,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:54,270 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:54,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 122 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:54,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,452 INFO L129 PetriNetUnfolder]: 85/416 cut-off events. [2022-07-13 22:05:54,452 INFO L130 PetriNetUnfolder]: For 1946/1952 co-relation queries the response was YES. [2022-07-13 22:05:54,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 416 events. 85/416 cut-off events. For 1946/1952 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1972 event pairs, 41 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1752. Up to 159 conditions per place. [2022-07-13 22:05:54,456 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 13 changer transitions 28/147 dead transitions. [2022-07-13 22:05:54,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 147 transitions, 1301 flow [2022-07-13 22:05:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-07-13 22:05:54,458 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-07-13 22:05:54,458 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-07-13 22:05:54,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-07-13 22:05:54,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-07-13 22:05:54,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,461 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,461 INFO L186 Difference]: Start difference. First operand has 185 places, 122 transitions, 877 flow. Second operand 18 states and 1213 transitions. [2022-07-13 22:05:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 147 transitions, 1301 flow [2022-07-13 22:05:54,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 147 transitions, 1194 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:54,470 INFO L242 Difference]: Finished difference. Result has 194 places, 113 transitions, 712 flow [2022-07-13 22:05:54,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=712, PETRI_PLACES=194, PETRI_TRANSITIONS=113} [2022-07-13 22:05:54,471 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 103 predicate places. [2022-07-13 22:05:54,471 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 113 transitions, 712 flow [2022-07-13 22:05:54,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:54,471 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] [2022-07-13 22:05:54,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:05:54,471 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1228370036, now seen corresponding path program 20 times [2022-07-13 22:05:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:54,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266987571] [2022-07-13 22:05:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266987571] [2022-07-13 22:05:54,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266987571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:54,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380319125] [2022-07-13 22:05:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:54,544 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:54,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 113 transitions, 712 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:54,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,725 INFO L129 PetriNetUnfolder]: 77/347 cut-off events. [2022-07-13 22:05:54,725 INFO L130 PetriNetUnfolder]: For 1602/1608 co-relation queries the response was YES. [2022-07-13 22:05:54,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 347 events. 77/347 cut-off events. For 1602/1608 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1513 event pairs, 42 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1439. Up to 137 conditions per place. [2022-07-13 22:05:54,729 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 2 changer transitions 36/129 dead transitions. [2022-07-13 22:05:54,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 129 transitions, 973 flow [2022-07-13 22:05:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-07-13 22:05:54,730 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-07-13 22:05:54,730 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-07-13 22:05:54,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-07-13 22:05:54,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-07-13 22:05:54,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,734 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,734 INFO L186 Difference]: Start difference. First operand has 194 places, 113 transitions, 712 flow. Second operand 17 states and 1141 transitions. [2022-07-13 22:05:54,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 129 transitions, 973 flow [2022-07-13 22:05:54,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 129 transitions, 869 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:54,741 INFO L242 Difference]: Finished difference. Result has 175 places, 87 transitions, 355 flow [2022-07-13 22:05:54,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=355, PETRI_PLACES=175, PETRI_TRANSITIONS=87} [2022-07-13 22:05:54,742 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-07-13 22:05:54,742 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 87 transitions, 355 flow [2022-07-13 22:05:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:54,742 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] [2022-07-13 22:05:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:05:54,742 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1641653018, now seen corresponding path program 1 times [2022-07-13 22:05:54,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:54,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267246657] [2022-07-13 22:05:54,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267246657] [2022-07-13 22:05:54,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267246657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:05:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820782895] [2022-07-13 22:05:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:05:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:05:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:05:54,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-13 22:05:54,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 87 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-13 22:05:54,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,806 INFO L129 PetriNetUnfolder]: 30/224 cut-off events. [2022-07-13 22:05:54,806 INFO L130 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-07-13 22:05:54,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 224 events. 30/224 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 751 event pairs, 25 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 703. Up to 25 conditions per place. [2022-07-13 22:05:54,808 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 17 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-07-13 22:05:54,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 90 transitions, 404 flow [2022-07-13 22:05:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:05:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 22:05:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2022-07-13 22:05:54,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8504901960784313 [2022-07-13 22:05:54,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2022-07-13 22:05:54,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2022-07-13 22:05:54,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2022-07-13 22:05:54,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,810 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,810 INFO L186 Difference]: Start difference. First operand has 175 places, 87 transitions, 355 flow. Second operand 4 states and 347 transitions. [2022-07-13 22:05:54,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 90 transitions, 404 flow [2022-07-13 22:05:54,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 90 transitions, 347 flow, removed 16 selfloop flow, removed 23 redundant places. [2022-07-13 22:05:54,813 INFO L242 Difference]: Finished difference. Result has 120 places, 87 transitions, 307 flow [2022-07-13 22:05:54,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=120, PETRI_TRANSITIONS=87} [2022-07-13 22:05:54,814 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2022-07-13 22:05:54,814 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 87 transitions, 307 flow [2022-07-13 22:05:54,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:54,814 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] [2022-07-13 22:05:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:05:54,814 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2143138146, now seen corresponding path program 2 times [2022-07-13 22:05:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:54,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974910746] [2022-07-13 22:05:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974910746] [2022-07-13 22:05:54,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974910746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096531729] [2022-07-13 22:05:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:54,848 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-13 22:05:54,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 87 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-13 22:05:54,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:54,878 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2022-07-13 22:05:54,878 INFO L130 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2022-07-13 22:05:54,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 172 events. 17/172 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 493 event pairs, 10 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 440. Up to 17 conditions per place. [2022-07-13 22:05:54,879 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 15 selfloop transitions, 6 changer transitions 6/92 dead transitions. [2022-07-13 22:05:54,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 92 transitions, 371 flow [2022-07-13 22:05:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:05:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:05:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-07-13 22:05:54,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490196078431372 [2022-07-13 22:05:54,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-07-13 22:05:54,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-07-13 22:05:54,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:54,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-07-13 22:05:54,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,881 INFO L186 Difference]: Start difference. First operand has 120 places, 87 transitions, 307 flow. Second operand 5 states and 433 transitions. [2022-07-13 22:05:54,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 92 transitions, 371 flow [2022-07-13 22:05:54,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 92 transitions, 340 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:54,884 INFO L242 Difference]: Finished difference. Result has 121 places, 83 transitions, 273 flow [2022-07-13 22:05:54,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=121, PETRI_TRANSITIONS=83} [2022-07-13 22:05:54,884 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2022-07-13 22:05:54,884 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 83 transitions, 273 flow [2022-07-13 22:05:54,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,885 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:54,885 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] [2022-07-13 22:05:54,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:05:54,885 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -384437336, now seen corresponding path program 1 times [2022-07-13 22:05:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:54,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306272645] [2022-07-13 22:05:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306272645] [2022-07-13 22:05:54,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306272645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573376741] [2022-07-13 22:05:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:54,953 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:54,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 83 transitions, 273 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:54,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:55,192 INFO L129 PetriNetUnfolder]: 49/241 cut-off events. [2022-07-13 22:05:55,192 INFO L130 PetriNetUnfolder]: For 426/427 co-relation queries the response was YES. [2022-07-13 22:05:55,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 241 events. 49/241 cut-off events. For 426/427 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 859 event pairs, 0 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 700. Up to 35 conditions per place. [2022-07-13 22:05:55,194 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 5 changer transitions 41/148 dead transitions. [2022-07-13 22:05:55,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 148 transitions, 888 flow [2022-07-13 22:05:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1606 transitions. [2022-07-13 22:05:55,196 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6560457516339869 [2022-07-13 22:05:55,196 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1606 transitions. [2022-07-13 22:05:55,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1606 transitions. [2022-07-13 22:05:55,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:55,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1606 transitions. [2022-07-13 22:05:55,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.91666666666667) internal successors, (1606), 24 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,200 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,200 INFO L186 Difference]: Start difference. First operand has 121 places, 83 transitions, 273 flow. Second operand 24 states and 1606 transitions. [2022-07-13 22:05:55,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 148 transitions, 888 flow [2022-07-13 22:05:55,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 148 transitions, 796 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:55,203 INFO L242 Difference]: Finished difference. Result has 147 places, 83 transitions, 296 flow [2022-07-13 22:05:55,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=296, PETRI_PLACES=147, PETRI_TRANSITIONS=83} [2022-07-13 22:05:55,203 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-07-13 22:05:55,203 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 83 transitions, 296 flow [2022-07-13 22:05:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,204 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:55,204 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] [2022-07-13 22:05:55,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:05:55,204 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1395475274, now seen corresponding path program 2 times [2022-07-13 22:05:55,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:55,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126060445] [2022-07-13 22:05:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:55,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:55,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:55,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126060445] [2022-07-13 22:05:55,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126060445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:55,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:55,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301544856] [2022-07-13 22:05:55,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:55,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:55,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:55,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:55,274 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:55,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 83 transitions, 296 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:55,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:55,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:55,514 INFO L129 PetriNetUnfolder]: 43/235 cut-off events. [2022-07-13 22:05:55,514 INFO L130 PetriNetUnfolder]: For 937/938 co-relation queries the response was YES. [2022-07-13 22:05:55,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 235 events. 43/235 cut-off events. For 937/938 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 798 event pairs, 5 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 837. Up to 27 conditions per place. [2022-07-13 22:05:55,516 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 5 changer transitions 40/146 dead transitions. [2022-07-13 22:05:55,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 985 flow [2022-07-13 22:05:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1604 transitions. [2022-07-13 22:05:55,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-07-13 22:05:55,518 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1604 transitions. [2022-07-13 22:05:55,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1604 transitions. [2022-07-13 22:05:55,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:55,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1604 transitions. [2022-07-13 22:05:55,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.83333333333333) internal successors, (1604), 24 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,522 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,522 INFO L186 Difference]: Start difference. First operand has 147 places, 83 transitions, 296 flow. Second operand 24 states and 1604 transitions. [2022-07-13 22:05:55,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 985 flow [2022-07-13 22:05:55,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 146 transitions, 816 flow, removed 47 selfloop flow, removed 20 redundant places. [2022-07-13 22:05:55,525 INFO L242 Difference]: Finished difference. Result has 151 places, 83 transitions, 308 flow [2022-07-13 22:05:55,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=308, PETRI_PLACES=151, PETRI_TRANSITIONS=83} [2022-07-13 22:05:55,526 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-07-13 22:05:55,526 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 83 transitions, 308 flow [2022-07-13 22:05:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,526 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:55,526 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] [2022-07-13 22:05:55,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:05:55,526 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash 751505554, now seen corresponding path program 3 times [2022-07-13 22:05:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:55,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160589011] [2022-07-13 22:05:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:55,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:55,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160589011] [2022-07-13 22:05:55,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160589011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:55,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:55,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083981775] [2022-07-13 22:05:55,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:55,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:55,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:55,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:55,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 83 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:55,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:55,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:55,859 INFO L129 PetriNetUnfolder]: 55/276 cut-off events. [2022-07-13 22:05:55,859 INFO L130 PetriNetUnfolder]: For 1467/1469 co-relation queries the response was YES. [2022-07-13 22:05:55,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 276 events. 55/276 cut-off events. For 1467/1469 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1067 event pairs, 9 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 1093. Up to 57 conditions per place. [2022-07-13 22:05:55,861 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 12 changer transitions 32/144 dead transitions. [2022-07-13 22:05:55,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 1071 flow [2022-07-13 22:05:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1476 transitions. [2022-07-13 22:05:55,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6577540106951871 [2022-07-13 22:05:55,863 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1476 transitions. [2022-07-13 22:05:55,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1476 transitions. [2022-07-13 22:05:55,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:55,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1476 transitions. [2022-07-13 22:05:55,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.0909090909091) internal successors, (1476), 22 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,867 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,867 INFO L186 Difference]: Start difference. First operand has 151 places, 83 transitions, 308 flow. Second operand 22 states and 1476 transitions. [2022-07-13 22:05:55,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 1071 flow [2022-07-13 22:05:55,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 144 transitions, 901 flow, removed 50 selfloop flow, removed 20 redundant places. [2022-07-13 22:05:55,871 INFO L242 Difference]: Finished difference. Result has 149 places, 93 transitions, 435 flow [2022-07-13 22:05:55,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=435, PETRI_PLACES=149, PETRI_TRANSITIONS=93} [2022-07-13 22:05:55,871 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 58 predicate places. [2022-07-13 22:05:55,871 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 93 transitions, 435 flow [2022-07-13 22:05:55,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,872 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:55,872 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] [2022-07-13 22:05:55,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:05:55,872 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1149913502, now seen corresponding path program 4 times [2022-07-13 22:05:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:55,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243307334] [2022-07-13 22:05:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:55,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:55,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:55,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243307334] [2022-07-13 22:05:55,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243307334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:55,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:55,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774234401] [2022-07-13 22:05:55,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:55,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:55,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:55,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:55,952 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:55,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 93 transitions, 435 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:55,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:55,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:55,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,230 INFO L129 PetriNetUnfolder]: 71/322 cut-off events. [2022-07-13 22:05:56,230 INFO L130 PetriNetUnfolder]: For 2027/2035 co-relation queries the response was YES. [2022-07-13 22:05:56,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 322 events. 71/322 cut-off events. For 2027/2035 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1371 event pairs, 19 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1414. Up to 71 conditions per place. [2022-07-13 22:05:56,233 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 17 changer transitions 32/152 dead transitions. [2022-07-13 22:05:56,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 152 transitions, 1261 flow [2022-07-13 22:05:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1415 transitions. [2022-07-13 22:05:56,236 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6605975723622782 [2022-07-13 22:05:56,236 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1415 transitions. [2022-07-13 22:05:56,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1415 transitions. [2022-07-13 22:05:56,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1415 transitions. [2022-07-13 22:05:56,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.38095238095238) internal successors, (1415), 21 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,241 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,241 INFO L186 Difference]: Start difference. First operand has 149 places, 93 transitions, 435 flow. Second operand 21 states and 1415 transitions. [2022-07-13 22:05:56,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 152 transitions, 1261 flow [2022-07-13 22:05:56,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 1035 flow, removed 113 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:56,246 INFO L242 Difference]: Finished difference. Result has 161 places, 103 transitions, 566 flow [2022-07-13 22:05:56,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=566, PETRI_PLACES=161, PETRI_TRANSITIONS=103} [2022-07-13 22:05:56,247 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2022-07-13 22:05:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 103 transitions, 566 flow [2022-07-13 22:05:56,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:56,248 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] [2022-07-13 22:05:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:05:56,248 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1840832138, now seen corresponding path program 5 times [2022-07-13 22:05:56,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253572499] [2022-07-13 22:05:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:56,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:56,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253572499] [2022-07-13 22:05:56,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253572499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:56,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:56,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:56,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3994970] [2022-07-13 22:05:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:56,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:56,322 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:56,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 103 transitions, 566 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:56,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:56,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,528 INFO L129 PetriNetUnfolder]: 66/321 cut-off events. [2022-07-13 22:05:56,528 INFO L130 PetriNetUnfolder]: For 2439/2452 co-relation queries the response was YES. [2022-07-13 22:05:56,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 321 events. 66/321 cut-off events. For 2439/2452 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1431 event pairs, 17 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 1504. Up to 84 conditions per place. [2022-07-13 22:05:56,533 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 50 selfloop transitions, 20 changer transitions 36/161 dead transitions. [2022-07-13 22:05:56,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 1468 flow [2022-07-13 22:05:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1345 transitions. [2022-07-13 22:05:56,535 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2022-07-13 22:05:56,536 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1345 transitions. [2022-07-13 22:05:56,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1345 transitions. [2022-07-13 22:05:56,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1345 transitions. [2022-07-13 22:05:56,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.25) internal successors, (1345), 20 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,540 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,540 INFO L186 Difference]: Start difference. First operand has 161 places, 103 transitions, 566 flow. Second operand 20 states and 1345 transitions. [2022-07-13 22:05:56,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 1468 flow [2022-07-13 22:05:56,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1302 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:56,546 INFO L242 Difference]: Finished difference. Result has 169 places, 110 transitions, 716 flow [2022-07-13 22:05:56,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=716, PETRI_PLACES=169, PETRI_TRANSITIONS=110} [2022-07-13 22:05:56,547 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 78 predicate places. [2022-07-13 22:05:56,548 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 110 transitions, 716 flow [2022-07-13 22:05:56,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,548 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:56,548 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] [2022-07-13 22:05:56,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:05:56,548 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:56,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 894008134, now seen corresponding path program 6 times [2022-07-13 22:05:56,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:56,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859605989] [2022-07-13 22:05:56,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:56,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:56,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:56,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859605989] [2022-07-13 22:05:56,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859605989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:56,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:56,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611035539] [2022-07-13 22:05:56,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:56,627 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:56,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 110 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:56,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:56,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,969 INFO L129 PetriNetUnfolder]: 64/307 cut-off events. [2022-07-13 22:05:56,969 INFO L130 PetriNetUnfolder]: For 2312/2325 co-relation queries the response was YES. [2022-07-13 22:05:56,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 307 events. 64/307 cut-off events. For 2312/2325 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1291 event pairs, 18 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1445. Up to 69 conditions per place. [2022-07-13 22:05:56,972 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 22 changer transitions 32/164 dead transitions. [2022-07-13 22:05:56,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 164 transitions, 1527 flow [2022-07-13 22:05:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1349 transitions. [2022-07-13 22:05:56,974 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6612745098039216 [2022-07-13 22:05:56,974 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1349 transitions. [2022-07-13 22:05:56,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1349 transitions. [2022-07-13 22:05:56,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1349 transitions. [2022-07-13 22:05:56,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.45) internal successors, (1349), 20 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,977 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,977 INFO L186 Difference]: Start difference. First operand has 169 places, 110 transitions, 716 flow. Second operand 20 states and 1349 transitions. [2022-07-13 22:05:56,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 164 transitions, 1527 flow [2022-07-13 22:05:56,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 164 transitions, 1345 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:56,984 INFO L242 Difference]: Finished difference. Result has 180 places, 118 transitions, 828 flow [2022-07-13 22:05:56,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=828, PETRI_PLACES=180, PETRI_TRANSITIONS=118} [2022-07-13 22:05:56,985 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2022-07-13 22:05:56,985 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 118 transitions, 828 flow [2022-07-13 22:05:56,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,985 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:56,985 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] [2022-07-13 22:05:56,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:05:56,985 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash -122420418, now seen corresponding path program 7 times [2022-07-13 22:05:56,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:56,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942393330] [2022-07-13 22:05:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:57,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:57,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942393330] [2022-07-13 22:05:57,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942393330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:57,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:57,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:57,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715347495] [2022-07-13 22:05:57,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:57,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:57,057 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:57,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 118 transitions, 828 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:57,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:57,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:57,215 INFO L129 PetriNetUnfolder]: 57/309 cut-off events. [2022-07-13 22:05:57,215 INFO L130 PetriNetUnfolder]: For 2525/2539 co-relation queries the response was YES. [2022-07-13 22:05:57,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 309 events. 57/309 cut-off events. For 2525/2539 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1362 event pairs, 13 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 1460. Up to 78 conditions per place. [2022-07-13 22:05:57,218 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 53 selfloop transitions, 26 changer transitions 27/161 dead transitions. [2022-07-13 22:05:57,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 161 transitions, 1509 flow [2022-07-13 22:05:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1082 transitions. [2022-07-13 22:05:57,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-07-13 22:05:57,220 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1082 transitions. [2022-07-13 22:05:57,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1082 transitions. [2022-07-13 22:05:57,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:57,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1082 transitions. [2022-07-13 22:05:57,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,223 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,223 INFO L186 Difference]: Start difference. First operand has 180 places, 118 transitions, 828 flow. Second operand 16 states and 1082 transitions. [2022-07-13 22:05:57,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 161 transitions, 1509 flow [2022-07-13 22:05:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 1373 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:57,231 INFO L242 Difference]: Finished difference. Result has 179 places, 123 transitions, 886 flow [2022-07-13 22:05:57,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=886, PETRI_PLACES=179, PETRI_TRANSITIONS=123} [2022-07-13 22:05:57,232 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-07-13 22:05:57,232 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 123 transitions, 886 flow [2022-07-13 22:05:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:57,233 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] [2022-07-13 22:05:57,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:05:57,233 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -427302442, now seen corresponding path program 8 times [2022-07-13 22:05:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:57,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108512053] [2022-07-13 22:05:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:57,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:57,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108512053] [2022-07-13 22:05:57,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108512053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:57,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:57,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196642985] [2022-07-13 22:05:57,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:57,302 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:57,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 123 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:57,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:57,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:57,487 INFO L129 PetriNetUnfolder]: 48/274 cut-off events. [2022-07-13 22:05:57,487 INFO L130 PetriNetUnfolder]: For 1694/1713 co-relation queries the response was YES. [2022-07-13 22:05:57,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 274 events. 48/274 cut-off events. For 1694/1713 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1096 event pairs, 9 based on Foata normal form. 7/279 useless extension candidates. Maximal degree in co-relation 1214. Up to 66 conditions per place. [2022-07-13 22:05:57,489 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 14 changer transitions 35/153 dead transitions. [2022-07-13 22:05:57,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 153 transitions, 1341 flow [2022-07-13 22:05:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1207 transitions. [2022-07-13 22:05:57,491 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2022-07-13 22:05:57,491 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1207 transitions. [2022-07-13 22:05:57,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1207 transitions. [2022-07-13 22:05:57,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:57,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1207 transitions. [2022-07-13 22:05:57,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.05555555555556) internal successors, (1207), 18 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,494 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,494 INFO L186 Difference]: Start difference. First operand has 179 places, 123 transitions, 886 flow. Second operand 18 states and 1207 transitions. [2022-07-13 22:05:57,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 153 transitions, 1341 flow [2022-07-13 22:05:57,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 153 transitions, 1210 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:57,501 INFO L242 Difference]: Finished difference. Result has 186 places, 108 transitions, 644 flow [2022-07-13 22:05:57,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=644, PETRI_PLACES=186, PETRI_TRANSITIONS=108} [2022-07-13 22:05:57,502 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2022-07-13 22:05:57,502 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 108 transitions, 644 flow [2022-07-13 22:05:57,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:57,502 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] [2022-07-13 22:05:57,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:05:57,503 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:57,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash -290657432, now seen corresponding path program 9 times [2022-07-13 22:05:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:57,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620303504] [2022-07-13 22:05:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620303504] [2022-07-13 22:05:57,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620303504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:57,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:57,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587287971] [2022-07-13 22:05:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:57,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:57,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:57,569 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:57,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 108 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:57,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:57,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:57,784 INFO L129 PetriNetUnfolder]: 50/275 cut-off events. [2022-07-13 22:05:57,784 INFO L130 PetriNetUnfolder]: For 1683/1696 co-relation queries the response was YES. [2022-07-13 22:05:57,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 275 events. 50/275 cut-off events. For 1683/1696 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1070 event pairs, 13 based on Foata normal form. 3/275 useless extension candidates. Maximal degree in co-relation 1233. Up to 66 conditions per place. [2022-07-13 22:05:57,786 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 22 changer transitions 25/148 dead transitions. [2022-07-13 22:05:57,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 148 transitions, 1273 flow [2022-07-13 22:05:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-07-13 22:05:57,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-07-13 22:05:57,788 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-07-13 22:05:57,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-07-13 22:05:57,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:57,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-07-13 22:05:57,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,792 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,792 INFO L186 Difference]: Start difference. First operand has 186 places, 108 transitions, 644 flow. Second operand 18 states and 1213 transitions. [2022-07-13 22:05:57,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 148 transitions, 1273 flow [2022-07-13 22:05:57,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 148 transitions, 1101 flow, removed 30 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:57,799 INFO L242 Difference]: Finished difference. Result has 171 places, 117 transitions, 751 flow [2022-07-13 22:05:57,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=751, PETRI_PLACES=171, PETRI_TRANSITIONS=117} [2022-07-13 22:05:57,800 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 80 predicate places. [2022-07-13 22:05:57,800 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 117 transitions, 751 flow [2022-07-13 22:05:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,801 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:57,801 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 22:05:57,801 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:57,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash 957146222, now seen corresponding path program 10 times [2022-07-13 22:05:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:57,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789666307] [2022-07-13 22:05:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:57,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:57,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789666307] [2022-07-13 22:05:57,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789666307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:57,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:57,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898027505] [2022-07-13 22:05:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:57,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:57,876 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:57,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 117 transitions, 751 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:57,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:57,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:57,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:58,114 INFO L129 PetriNetUnfolder]: 47/278 cut-off events. [2022-07-13 22:05:58,114 INFO L130 PetriNetUnfolder]: For 1271/1277 co-relation queries the response was YES. [2022-07-13 22:05:58,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 278 events. 47/278 cut-off events. For 1271/1277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1117 event pairs, 16 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 1148. Up to 66 conditions per place. [2022-07-13 22:05:58,116 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 24 changer transitions 26/152 dead transitions. [2022-07-13 22:05:58,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 152 transitions, 1300 flow [2022-07-13 22:05:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-07-13 22:05:58,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-07-13 22:05:58,118 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-07-13 22:05:58,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-07-13 22:05:58,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:58,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-07-13 22:05:58,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,121 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,121 INFO L186 Difference]: Start difference. First operand has 171 places, 117 transitions, 751 flow. Second operand 17 states and 1149 transitions. [2022-07-13 22:05:58,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 152 transitions, 1300 flow [2022-07-13 22:05:58,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 152 transitions, 1215 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-13 22:05:58,128 INFO L242 Difference]: Finished difference. Result has 183 places, 121 transitions, 835 flow [2022-07-13 22:05:58,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=835, PETRI_PLACES=183, PETRI_TRANSITIONS=121} [2022-07-13 22:05:58,129 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-07-13 22:05:58,129 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 121 transitions, 835 flow [2022-07-13 22:05:58,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:58,129 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] [2022-07-13 22:05:58,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 22:05:58,130 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash -269503326, now seen corresponding path program 11 times [2022-07-13 22:05:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:58,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544459745] [2022-07-13 22:05:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:58,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:58,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:58,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544459745] [2022-07-13 22:05:58,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544459745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:58,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:58,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360747917] [2022-07-13 22:05:58,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:58,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:58,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:58,218 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:58,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 121 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:58,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:58,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:58,395 INFO L129 PetriNetUnfolder]: 44/270 cut-off events. [2022-07-13 22:05:58,395 INFO L130 PetriNetUnfolder]: For 1325/1337 co-relation queries the response was YES. [2022-07-13 22:05:58,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 270 events. 44/270 cut-off events. For 1325/1337 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1067 event pairs, 12 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 1120. Up to 66 conditions per place. [2022-07-13 22:05:58,398 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 14 changer transitions 34/150 dead transitions. [2022-07-13 22:05:58,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 150 transitions, 1283 flow [2022-07-13 22:05:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1148 transitions. [2022-07-13 22:05:58,399 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6620530565167243 [2022-07-13 22:05:58,399 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1148 transitions. [2022-07-13 22:05:58,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1148 transitions. [2022-07-13 22:05:58,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:58,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1148 transitions. [2022-07-13 22:05:58,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.52941176470588) internal successors, (1148), 17 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,403 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,403 INFO L186 Difference]: Start difference. First operand has 183 places, 121 transitions, 835 flow. Second operand 17 states and 1148 transitions. [2022-07-13 22:05:58,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 150 transitions, 1283 flow [2022-07-13 22:05:58,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 150 transitions, 1184 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:58,410 INFO L242 Difference]: Finished difference. Result has 190 places, 112 transitions, 684 flow [2022-07-13 22:05:58,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=684, PETRI_PLACES=190, PETRI_TRANSITIONS=112} [2022-07-13 22:05:58,410 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2022-07-13 22:05:58,410 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 112 transitions, 684 flow [2022-07-13 22:05:58,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:58,411 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] [2022-07-13 22:05:58,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 22:05:58,411 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1429820720, now seen corresponding path program 12 times [2022-07-13 22:05:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:58,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586266311] [2022-07-13 22:05:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:58,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586266311] [2022-07-13 22:05:58,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586266311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:58,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:58,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:58,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478170345] [2022-07-13 22:05:58,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:58,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:58,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:58,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 112 transitions, 684 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:58,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:58,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:58,671 INFO L129 PetriNetUnfolder]: 34/228 cut-off events. [2022-07-13 22:05:58,671 INFO L130 PetriNetUnfolder]: For 1175/1187 co-relation queries the response was YES. [2022-07-13 22:05:58,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 228 events. 34/228 cut-off events. For 1175/1187 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 782 event pairs, 9 based on Foata normal form. 3/229 useless extension candidates. Maximal degree in co-relation 889. Up to 53 conditions per place. [2022-07-13 22:05:58,673 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 3 changer transitions 37/132 dead transitions. [2022-07-13 22:05:58,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 132 transitions, 979 flow [2022-07-13 22:05:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1203 transitions. [2022-07-13 22:05:58,674 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-07-13 22:05:58,675 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1203 transitions. [2022-07-13 22:05:58,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1203 transitions. [2022-07-13 22:05:58,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:58,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1203 transitions. [2022-07-13 22:05:58,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.83333333333333) internal successors, (1203), 18 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,678 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,678 INFO L186 Difference]: Start difference. First operand has 190 places, 112 transitions, 684 flow. Second operand 18 states and 1203 transitions. [2022-07-13 22:05:58,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 132 transitions, 979 flow [2022-07-13 22:05:58,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 132 transitions, 859 flow, removed 26 selfloop flow, removed 22 redundant places. [2022-07-13 22:05:58,683 INFO L242 Difference]: Finished difference. Result has 174 places, 92 transitions, 398 flow [2022-07-13 22:05:58,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=174, PETRI_TRANSITIONS=92} [2022-07-13 22:05:58,684 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2022-07-13 22:05:58,684 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 92 transitions, 398 flow [2022-07-13 22:05:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,684 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:58,684 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] [2022-07-13 22:05:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 22:05:58,685 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1540704440, now seen corresponding path program 13 times [2022-07-13 22:05:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:58,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211511316] [2022-07-13 22:05:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:58,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211511316] [2022-07-13 22:05:58,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211511316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:58,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:58,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717232651] [2022-07-13 22:05:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:58,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:58,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:58,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 92 transitions, 398 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:58,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:58,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:59,009 INFO L129 PetriNetUnfolder]: 39/251 cut-off events. [2022-07-13 22:05:59,010 INFO L130 PetriNetUnfolder]: For 1096/1097 co-relation queries the response was YES. [2022-07-13 22:05:59,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 251 events. 39/251 cut-off events. For 1096/1097 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 889 event pairs, 5 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 915. Up to 33 conditions per place. [2022-07-13 22:05:59,012 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 19 changer transitions 32/149 dead transitions. [2022-07-13 22:05:59,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 149 transitions, 1122 flow [2022-07-13 22:05:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1473 transitions. [2022-07-13 22:05:59,013 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6564171122994652 [2022-07-13 22:05:59,013 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1473 transitions. [2022-07-13 22:05:59,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1473 transitions. [2022-07-13 22:05:59,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:59,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1473 transitions. [2022-07-13 22:05:59,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.95454545454545) internal successors, (1473), 22 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,017 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,017 INFO L186 Difference]: Start difference. First operand has 174 places, 92 transitions, 398 flow. Second operand 22 states and 1473 transitions. [2022-07-13 22:05:59,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 149 transitions, 1122 flow [2022-07-13 22:05:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 149 transitions, 905 flow, removed 40 selfloop flow, removed 24 redundant places. [2022-07-13 22:05:59,021 INFO L242 Difference]: Finished difference. Result has 157 places, 103 transitions, 514 flow [2022-07-13 22:05:59,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=514, PETRI_PLACES=157, PETRI_TRANSITIONS=103} [2022-07-13 22:05:59,021 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 66 predicate places. [2022-07-13 22:05:59,022 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 103 transitions, 514 flow [2022-07-13 22:05:59,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,022 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:59,022 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] [2022-07-13 22:05:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 22:05:59,022 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1542843278, now seen corresponding path program 14 times [2022-07-13 22:05:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:59,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42973934] [2022-07-13 22:05:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:59,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42973934] [2022-07-13 22:05:59,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42973934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:59,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248606523] [2022-07-13 22:05:59,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:59,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:59,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 103 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:59,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:59,334 INFO L129 PetriNetUnfolder]: 36/233 cut-off events. [2022-07-13 22:05:59,334 INFO L130 PetriNetUnfolder]: For 740/741 co-relation queries the response was YES. [2022-07-13 22:05:59,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 233 events. 36/233 cut-off events. For 740/741 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 779 event pairs, 6 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 868. Up to 31 conditions per place. [2022-07-13 22:05:59,336 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 21 changer transitions 32/147 dead transitions. [2022-07-13 22:05:59,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 147 transitions, 1106 flow [2022-07-13 22:05:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1406 transitions. [2022-07-13 22:05:59,338 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563958916900093 [2022-07-13 22:05:59,338 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1406 transitions. [2022-07-13 22:05:59,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1406 transitions. [2022-07-13 22:05:59,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:59,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1406 transitions. [2022-07-13 22:05:59,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.95238095238095) internal successors, (1406), 21 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,341 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,341 INFO L186 Difference]: Start difference. First operand has 157 places, 103 transitions, 514 flow. Second operand 21 states and 1406 transitions. [2022-07-13 22:05:59,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 147 transitions, 1106 flow [2022-07-13 22:05:59,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 964 flow, removed 65 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:59,345 INFO L242 Difference]: Finished difference. Result has 166 places, 105 transitions, 579 flow [2022-07-13 22:05:59,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=579, PETRI_PLACES=166, PETRI_TRANSITIONS=105} [2022-07-13 22:05:59,346 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-07-13 22:05:59,346 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 105 transitions, 579 flow [2022-07-13 22:05:59,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,346 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:59,347 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] [2022-07-13 22:05:59,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 22:05:59,347 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1087685708, now seen corresponding path program 15 times [2022-07-13 22:05:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:59,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082297245] [2022-07-13 22:05:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082297245] [2022-07-13 22:05:59,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082297245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919401827] [2022-07-13 22:05:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:59,424 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:59,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 105 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:59,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:59,607 INFO L129 PetriNetUnfolder]: 33/230 cut-off events. [2022-07-13 22:05:59,607 INFO L130 PetriNetUnfolder]: For 970/971 co-relation queries the response was YES. [2022-07-13 22:05:59,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 230 events. 33/230 cut-off events. For 970/971 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 770 event pairs, 3 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-13 22:05:59,609 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 22 changer transitions 29/145 dead transitions. [2022-07-13 22:05:59,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 145 transitions, 1119 flow [2022-07-13 22:05:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1083 transitions. [2022-07-13 22:05:59,610 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6636029411764706 [2022-07-13 22:05:59,610 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1083 transitions. [2022-07-13 22:05:59,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1083 transitions. [2022-07-13 22:05:59,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:59,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1083 transitions. [2022-07-13 22:05:59,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.6875) internal successors, (1083), 16 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,613 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,613 INFO L186 Difference]: Start difference. First operand has 166 places, 105 transitions, 579 flow. Second operand 16 states and 1083 transitions. [2022-07-13 22:05:59,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 145 transitions, 1119 flow [2022-07-13 22:05:59,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 976 flow, removed 46 selfloop flow, removed 17 redundant places. [2022-07-13 22:05:59,618 INFO L242 Difference]: Finished difference. Result has 160 places, 110 transitions, 626 flow [2022-07-13 22:05:59,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=626, PETRI_PLACES=160, PETRI_TRANSITIONS=110} [2022-07-13 22:05:59,618 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 69 predicate places. [2022-07-13 22:05:59,618 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 110 transitions, 626 flow [2022-07-13 22:05:59,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,619 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:59,619 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] [2022-07-13 22:05:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 22:05:59,619 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -470595522, now seen corresponding path program 16 times [2022-07-13 22:05:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:59,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557733087] [2022-07-13 22:05:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557733087] [2022-07-13 22:05:59,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557733087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397872974] [2022-07-13 22:05:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:59,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:59,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 110 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:59,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:59,854 INFO L129 PetriNetUnfolder]: 24/200 cut-off events. [2022-07-13 22:05:59,854 INFO L130 PetriNetUnfolder]: For 629/630 co-relation queries the response was YES. [2022-07-13 22:05:59,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 200 events. 24/200 cut-off events. For 629/630 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 571 event pairs, 3 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 724. Up to 30 conditions per place. [2022-07-13 22:05:59,856 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 34/134 dead transitions. [2022-07-13 22:05:59,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 134 transitions, 943 flow [2022-07-13 22:05:59,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-07-13 22:05:59,858 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-07-13 22:05:59,858 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-07-13 22:05:59,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-07-13 22:05:59,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:59,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-07-13 22:05:59,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,861 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,861 INFO L186 Difference]: Start difference. First operand has 160 places, 110 transitions, 626 flow. Second operand 18 states and 1205 transitions. [2022-07-13 22:05:59,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 134 transitions, 943 flow [2022-07-13 22:05:59,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 134 transitions, 839 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:59,866 INFO L242 Difference]: Finished difference. Result has 167 places, 95 transitions, 426 flow [2022-07-13 22:05:59,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=426, PETRI_PLACES=167, PETRI_TRANSITIONS=95} [2022-07-13 22:05:59,867 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 76 predicate places. [2022-07-13 22:05:59,867 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 95 transitions, 426 flow [2022-07-13 22:05:59,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,868 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:59,868 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] [2022-07-13 22:05:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 22:05:59,868 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1047995534, now seen corresponding path program 17 times [2022-07-13 22:05:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:59,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366076655] [2022-07-13 22:05:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366076655] [2022-07-13 22:05:59,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366076655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:59,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831339402] [2022-07-13 22:05:59,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:59,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:05:59,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 95 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:05:59,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:00,137 INFO L129 PetriNetUnfolder]: 29/213 cut-off events. [2022-07-13 22:06:00,138 INFO L130 PetriNetUnfolder]: For 695/696 co-relation queries the response was YES. [2022-07-13 22:06:00,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 213 events. 29/213 cut-off events. For 695/696 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 646 event pairs, 4 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 756. Up to 30 conditions per place. [2022-07-13 22:06:00,139 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 27/135 dead transitions. [2022-07-13 22:06:00,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 135 transitions, 946 flow [2022-07-13 22:06:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-07-13 22:06:00,141 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-07-13 22:06:00,141 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-07-13 22:06:00,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-07-13 22:06:00,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-07-13 22:06:00,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,144 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,144 INFO L186 Difference]: Start difference. First operand has 167 places, 95 transitions, 426 flow. Second operand 18 states and 1210 transitions. [2022-07-13 22:06:00,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 135 transitions, 946 flow [2022-07-13 22:06:00,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 135 transitions, 800 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-13 22:06:00,147 INFO L242 Difference]: Finished difference. Result has 152 places, 104 transitions, 539 flow [2022-07-13 22:06:00,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=539, PETRI_PLACES=152, PETRI_TRANSITIONS=104} [2022-07-13 22:06:00,148 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2022-07-13 22:06:00,148 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 104 transitions, 539 flow [2022-07-13 22:06:00,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:00,148 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] [2022-07-13 22:06:00,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 22:06:00,149 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1226403370, now seen corresponding path program 18 times [2022-07-13 22:06:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:00,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772811338] [2022-07-13 22:06:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:00,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:00,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772811338] [2022-07-13 22:06:00,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772811338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:00,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:00,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:00,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324518687] [2022-07-13 22:06:00,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:00,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:00,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:00,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:00,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:00,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:06:00,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 104 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:00,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:06:00,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:00,390 INFO L129 PetriNetUnfolder]: 25/211 cut-off events. [2022-07-13 22:06:00,390 INFO L130 PetriNetUnfolder]: For 493/494 co-relation queries the response was YES. [2022-07-13 22:06:00,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 211 events. 25/211 cut-off events. For 493/494 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 632 event pairs, 0 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 709. Up to 30 conditions per place. [2022-07-13 22:06:00,391 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 28/139 dead transitions. [2022-07-13 22:06:00,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 139 transitions, 993 flow [2022-07-13 22:06:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1146 transitions. [2022-07-13 22:06:00,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6608996539792388 [2022-07-13 22:06:00,393 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1146 transitions. [2022-07-13 22:06:00,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1146 transitions. [2022-07-13 22:06:00,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1146 transitions. [2022-07-13 22:06:00,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.41176470588235) internal successors, (1146), 17 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,396 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,396 INFO L186 Difference]: Start difference. First operand has 152 places, 104 transitions, 539 flow. Second operand 17 states and 1146 transitions. [2022-07-13 22:06:00,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 139 transitions, 993 flow [2022-07-13 22:06:00,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 139 transitions, 912 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-07-13 22:06:00,400 INFO L242 Difference]: Finished difference. Result has 164 places, 108 transitions, 621 flow [2022-07-13 22:06:00,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=621, PETRI_PLACES=164, PETRI_TRANSITIONS=108} [2022-07-13 22:06:00,402 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-07-13 22:06:00,402 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 108 transitions, 621 flow [2022-07-13 22:06:00,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:00,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:00,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 22:06:00,403 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1919700962, now seen corresponding path program 19 times [2022-07-13 22:06:00,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842983586] [2022-07-13 22:06:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:00,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:00,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:00,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842983586] [2022-07-13 22:06:00,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842983586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:00,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:00,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:00,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094785252] [2022-07-13 22:06:00,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:00,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:00,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:06:00,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 108 transitions, 621 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:00,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:06:00,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:00,662 INFO L129 PetriNetUnfolder]: 19/194 cut-off events. [2022-07-13 22:06:00,662 INFO L130 PetriNetUnfolder]: For 449/450 co-relation queries the response was YES. [2022-07-13 22:06:00,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 194 events. 19/194 cut-off events. For 449/450 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 659. Up to 30 conditions per place. [2022-07-13 22:06:00,663 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 12 changer transitions 33/133 dead transitions. [2022-07-13 22:06:00,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 133 transitions, 962 flow [2022-07-13 22:06:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:06:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:06:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-07-13 22:06:00,665 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-07-13 22:06:00,665 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-07-13 22:06:00,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-07-13 22:06:00,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-07-13 22:06:00,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,668 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,668 INFO L186 Difference]: Start difference. First operand has 164 places, 108 transitions, 621 flow. Second operand 17 states and 1141 transitions. [2022-07-13 22:06:00,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 133 transitions, 962 flow [2022-07-13 22:06:00,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 133 transitions, 861 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-13 22:06:00,672 INFO L242 Difference]: Finished difference. Result has 170 places, 99 transitions, 476 flow [2022-07-13 22:06:00,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=476, PETRI_PLACES=170, PETRI_TRANSITIONS=99} [2022-07-13 22:06:00,672 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-07-13 22:06:00,673 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 99 transitions, 476 flow [2022-07-13 22:06:00,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:00,673 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] [2022-07-13 22:06:00,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 22:06:00,673 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:00,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1018887062, now seen corresponding path program 20 times [2022-07-13 22:06:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:00,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57977225] [2022-07-13 22:06:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:00,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57977225] [2022-07-13 22:06:00,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57977225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:00,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:00,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:06:00,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486271766] [2022-07-13 22:06:00,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:00,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:06:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:06:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:06:00,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-13 22:06:00,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 99 transitions, 476 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:00,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-13 22:06:00,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:00,926 INFO L129 PetriNetUnfolder]: 11/124 cut-off events. [2022-07-13 22:06:00,927 INFO L130 PetriNetUnfolder]: For 244/245 co-relation queries the response was YES. [2022-07-13 22:06:00,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 124 events. 11/124 cut-off events. For 244/245 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 387. Up to 12 conditions per place. [2022-07-13 22:06:00,928 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-07-13 22:06:00,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 94 transitions, 588 flow [2022-07-13 22:06:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:06:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:06:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1178 transitions. [2022-07-13 22:06:00,929 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6416122004357299 [2022-07-13 22:06:00,929 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1178 transitions. [2022-07-13 22:06:00,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1178 transitions. [2022-07-13 22:06:00,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1178 transitions. [2022-07-13 22:06:00,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,932 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,932 INFO L186 Difference]: Start difference. First operand has 170 places, 99 transitions, 476 flow. Second operand 18 states and 1178 transitions. [2022-07-13 22:06:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 94 transitions, 588 flow [2022-07-13 22:06:00,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 94 transitions, 478 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-13 22:06:00,935 INFO L242 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2022-07-13 22:06:00,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2022-07-13 22:06:00,935 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2022-07-13 22:06:00,935 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2022-07-13 22:06:00,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-13 22:06:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-13 22:06:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-13 22:06:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 22:06:00,938 INFO L356 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 2, 1] [2022-07-13 22:06:00,940 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 22:06:00,941 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:06:00,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:06:00 BasicIcfg [2022-07-13 22:06:00,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:06:00,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:06:00,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:06:00,944 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:06:00,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:46" (3/4) ... [2022-07-13 22:06:00,946 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:06:00,952 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-13 22:06:00,953 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-13 22:06:00,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-13 22:06:00,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 22:06:00,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:06:00,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:06:00,988 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:06:00,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:06:00,989 INFO L158 Benchmark]: Toolchain (without parser) took 15214.69ms. Allocated memory was 88.1MB in the beginning and 272.6MB in the end (delta: 184.5MB). Free memory was 59.2MB in the beginning and 214.5MB in the end (delta: -155.3MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2022-07-13 22:06:00,989 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:06:00,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.19ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 59.0MB in the beginning and 82.3MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 22:06:00,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.99ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:06:00,990 INFO L158 Benchmark]: Boogie Preprocessor took 23.67ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:06:00,990 INFO L158 Benchmark]: RCFGBuilder took 263.40ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 67.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 22:06:00,990 INFO L158 Benchmark]: TraceAbstraction took 14671.42ms. Allocated memory was 107.0MB in the beginning and 272.6MB in the end (delta: 165.7MB). Free memory was 67.4MB in the beginning and 216.6MB in the end (delta: -149.2MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2022-07-13 22:06:00,990 INFO L158 Benchmark]: Witness Printer took 44.78ms. Allocated memory is still 272.6MB. Free memory was 216.6MB in the beginning and 214.5MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 22:06:00,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.19ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 59.0MB in the beginning and 82.3MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.99ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.67ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 263.40ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 67.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14671.42ms. Allocated memory was 107.0MB in the beginning and 272.6MB in the end (delta: 165.7MB). Free memory was 67.4MB in the beginning and 216.6MB in the end (delta: -149.2MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Witness Printer took 44.78ms. Allocated memory is still 272.6MB. Free memory was 216.6MB in the beginning and 214.5MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.6s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1876 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1876 mSDsluCounter, 8928 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8809 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7458 IncrementalHoareTripleChecker+Invalid, 7489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 1724 mSDtfsCounter, 7458 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1007 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 863 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1097occurred in iteration=12, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 14871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 22:06:01,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE